1. Shun Harada, Tatsuki Ishijima, Takahide Sakamoto, and Akito Chiba, “50-GHz-Spaced Flat Comb Generation by Inphase/Quadrature Electro-Optic Modulator Driven at 25 GHz,” Conference on Laser and Electro Optics (CLEO2023), JTh2A.97, San Jose, USA, 2023. [poster]

2. Takumi Hidaka, Tatsuki Ishijima, Shun Harada, Takahide Sakamoto, “Spectral Restoration of Optical Comb by Low-Resolution Scanning Etalon Combined with Inverse Matrix Deconvolution Processing,” Conference on Laser and Electro Optics (CLEO2023), JTu2A.42, San Jose, USA, 2023. [poster]

3. Takahide Sakamoto, “Correlative Conjugated Detection Scheme for Laser-Phase-Noise-Tolerant Coherent Detection,” Conference on Laser and Electro Optics (CLEO2023), SM2I.7, San Jose, USA, 2023. [oral]

4. Tatsuki Ishijima, Shuhei Otsuka, Shun Harada, Takahide Sakamoto, Ken Tanizawa, and Fumio Futami, “Nonlinear Tolerant Conjugated RoF System Secured by Physical Layer Encryption with Deliberate Signal Randomization,” the 2023 Optical Fiber Communication Conference (OFC2023), W4C.4, San Diego, USA, Mar. 2023. [oral]

5. Shuhei Otsuka, Ryo Koguchi, and Takahide Sakamoto, “Parallel Extension of High-Speed Analog-Circuit FIR Equalizer for Low-Latency Optical Transceiver/Receiver,” the 2023 Optical Fiber Communication Conference (OFC2023), W1E.2, San Diego, USA, Mar. 2023. [oral]

6. Hideto Takayasu, Syuhei Otsuka, Yuma Sato, and Takahide Sakamoto, “Quasi-Real-Time High Resolution Spectrum Analyzer by Two-Step Spectroscopy”, SPIE Photonics West, San Francisco, USA, Paper 12429-21, Feb. 2023. (in Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII (SPIE, 2023), Vol. 12429, pp. 139-142.) [oral]

7. Takumi Hidaka, Syun Harada, Tatsuki Ishijima, Hideto Takayasu, and Takahide Sakamoto, “Simplification of etalon spectrometer using inverse matrix data processing algorithm for optical comb spectrum evaluation”, SPIE Photonics West, San Francisco, USA, Paper 12429-27, Feb. 2023. (in Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII (SPIE, 2023), Vol. 12429, pp. 87–91.) [oral]

8. Takahide Sakamoto, Tatsuki Ishijima, Syuhei Otsuka, and Hideto Takayasu, “Asymmetric Heterodyne Downconversion for Fading-Free Radio-over-Fiber Systems”, SPIE Photonics West, San Francisco, USA, Paper 12429-41,  Feb. 2023. (in Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII (SPIE, 2023), Vol. 12429, pp. 211-212.) [oral]

9. Takahide Sakamoto, and Akito Chiba, “Multiple-Frequency-Spaced and -Offset Flat Optical Comb Generation Using Multiple-Parallel Phase Modulator: Theory and Design,” J. Opt. Soc. Am. B, vol. 39, no. 6, pp. 1644-1654, June 2022.  

10. Tatsuki Ishijima, and Takahide Sakamoto, “Flat Comb Convolution on Deeply Phase Modulated Light for Broader Spectral Enhancement of Comb Generation,” the IEEE Photonics Conference 2022 (IPC 2022), TuA3.2, Vancouver, Nov. 2022. [oral]

11. Takahide Sakamoto, Shuhei Otsuka, Tatsuki Ishijima, and Hideto Takayasu, “Fiber-Nonlinearity Cancellation of 8-PSK Radio-on-Fiber Signals by Conjugated RoF based on Photonic Dual-Sideband Upconversion and Asymmetric Heterodyne Downconversion,” the IEEE Photonics Conference 2022 (IPC 2022), ThD1.3, Vancouver, Nov. 2022. [oral]  

12. Tatsuki Ishijima, Shun Harada, and Takahide Sakamoto, “An Energy-Saving Optical Comb Generator by Deeply Driven MZM and Multi-Stage Phase Modulators,” 48th European Conference on Optical Communication (ECOC2022), Basel, Switzerland, We2E.1, Sep. 2022. [oral]

13. Takumi Hidaka, Tatsuki Ishijima, and Takahide Sakamoto, “Spectral Restoration of Optical Comb by Low-Resolution Spectrum Analyzer Combined with Inverse Matrix Deconvolution Processing,” the Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR2022), Sapporo Japan, P-CTh6-07, Jul. 2022. [poster]

14. Shuhei Otsuka, and Takahide Sakamoto, “Experimental Investigation on Parallel Extension of Optoelectronic Hybrid FIR Filter,” the Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR2022), Sapporo Japan, CThP13C-02, Jul. 2022. [oral]

15. Tatsuki Ishijima, and Takahide Sakamoto, “Wideband Ultra-Flat Spectral Enhancement by Cascaded Phase Modulation on Frequency Comb Generated from Mach-Zehnder Modulator,” Conference on Laser and Electro Optics (CLEO2022), San Jose, USA, JTh3A.24, 2022. [poster]

16. Hideto Takayasu, Shuhei Otsuka, and Takahide Sakamoto, “Super Agile High Resolution Spectrum Analyzer by Sampled Heterodyne System,” Conference on Laser and Electro Optics (CLEO2022), San Jose, USA, JTh3A.20, 2022.  [poster]

17. Takahide Sakamoto, and Akito Chiba, “Multi-Frequency-Spaced Optical Comb Generation by Superposition of Purely Deeply Phase-Modulated Lights,” the IEEE Photonics Conference 2021 (IPC 2021), Virtual Conference, WC4.3, Oct. 2021. [oral]

18. Takahide Sakamoto, Masaki Yamazaki, and Ryo Kouguchi, “Dual Coherent Sampling for Statistical Error-Vector-Magnitude Monitoring of Nonlinearly Phase Distorted Signals,” the Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR2020), Virtual Conference, 2F, Aug. 2020. [oral]

19. J. Mochizuki, K. Inagaki, G.-W. Lu, T. Sakamoto, Y. Yoshida, A. Kanno, N. Yamamoto, and T. Kawanishi, “Variable-linewidth light source based on Brownian motion random walk in optical phase,” IEICE Electron. Express, vol. 17, no. 16, pp. 1-4, Apr. 2020.

20. Takahide Sakamoto, “Optical comb generation and its application (invited),” International Conference on Photonics Solutions (ICPS2019), Chiang-Mai, Thailand, Th.B3, Nov. 2019 (invited). [oral]

21. Takahide Sakamoto, “Phase-Conjugated Signal Processing for Opto-Electronic Signal Measurements,” Photonics-applied Electromagnetic Measurement (PEM2019), Ise, Japan, PE-16, Nov. 2019. [oral]

22. T. Sakamoto, G.W. Lu, N. Yamamoto, and T. Kawanishi, “Simultaneous Compensation of Fiber Nonlinearity and Dispersive Fading Effects by Conjugated-Paired Radio-on-Fiber Transmission with Phase-Shifted Dual- Sideband Downconversion”, The 24th OptoElectronics and Communications Conference (OECC2019), Fukuoka, Japan, TuP4-F2, Jul. 2019.

23. T. Sakamoto, T. Umezawa, N. Yamamoto, and T. Kawanishi, “Numerical investigation on spatial coherent matched detection for detection of spatially multiplexed signals”, SPIE Photonics West, San Francisco, USA, 10947-11, Feb. 2019.

24. T. Sakamoto, “Optical Comb Sources Based on Optical Modulation Using Electro-Optic Effects for Photonic Measurements (invited),” European Advanced Materials Congress (EAMC2018), Stockholm, Sweden, Aug. 2018.

25. T. Sakamoto, and A. Chiba, “Frequency Spacing and Offset Tunable Multiple-Frequency-Spaced Optical Comb Generation Using Multiple-Parallel Phase Modulator,” the Pacific Rim Conference on Lasers and Electro-Optics (CLEO-Pacific Rim), Hong Kong, F2F3, Aug. 2018.

26. T. Sakamoto, G.-W. Lu, and N. Yamamoto, “Experimental Demonstration of Fiber-Nonlinearity Cancellation by Photonic Homodyne Down-Conversion in Conjugated-Paired Radio-on-Fiber System,” Conference on Laser and Electro Optics (CLEO 2018), San Jose, USA, STu4C.5, May 2018.

27. T. Sakamoto, T. Umezawa, N. Yamamoto, and T. Kawanish, “Two-dimensional Spatial Coherent Matched Detection Scheme for Modal Separation and Homodyne Detection of Mode-Division Multiplexed Signals,” the IEEE Photonics Conference 2017 (IPC 2017), Lake Buena Vista, Florida, USA, MH1.2, Oct. 2017.

28. T. Sakamoto, T. Umezawa, G.W. Lu, K. Akahane, A. Matsumoto, A. Kanno, N. Yamamoto, T. Kawanishi, “Spatial Coherent Matched Detection Using High-Speed Two-Dimensional Photo-Diode Array for Full-Channel Demultiplexing and Demodulation of Mode-Division-Multiplexed Signals,” 43th European Conference on Optical Communication (ECOC 2017), Tu.1.F.5, Sweden, Sep. 2017.

29. T. Sakamoto, and A. Chiba, “Even/Odd Mode-Selective Double Frequency-Spaced Optical Comb Generation by Quad-Parallel Phase Modulator,” the Pacific Rim Conference on Lasers and Electro-Optics (CLEO-Pacific Rim)/ The 22th OptoElectronics and Communications Conference (OECC2017), 3-4B-7, Singapore, July 2017.

30. T. Sakamoto, and G.-W. Lu, “Homodyne Direct Down-Conversion of 8-PSK Conjugated Radio-over-Fiber Signals for Fiber Nonlinearity Cancellation,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2017), Munich, Germany, CI-4.3, June 2017.
31. T. Sakamoto, G.W. Lu, and N. Yamamoto, “Ultrafast Demultiplexing of Optical Time-Division Multiplexed Signals by Parallel Opto-Electronic Time-frequency Domain Sampling,” the 2017 Optical Fiber Communication Conference (OFC2017), M2J.5, Los Angeles, USA, Mar. 2017.
32. T. Sakamoto, I. Morohashi, and N. Yamamoto, “Non-uniform Operation of Cascaded Mach-zehnder Modulator Based Flat Comb Generators for Higher Spectral Bandwidth and Resolution,” OSA Fourier Transform Spectroscopy (FTS2016), FTh3B.3, Leipzig, Germany, Nov. 2016.
33. T. Sakamoto, G.-W. Lu, and T. Kawanishi, “Experimental Demonstration of Fiber-Nonlinearity-Torelant Conjugated-Paired Radio-on-Fiber System Employing Asymmetric Photonic Heterodyne Down-Converter,” the 2016 IEEE International Topical Meeting on Microwave Photonics (MWP 2016), Long Beach, USA, TuM1.7, Nov. 2016.
34. T. Sakamoto, “Double-Frequency-Spaced Optical Comb Generation Technique Based on Quad-Parallel Phase Modulators,” the IEEE Photonics Conference 2016 (IPC2016), Hawaii, USA, WF3.6, Oct. 2016.
35. T. Sakamoto, G.W. Lu, and N. Yamamoto, “Full-Channel Parallel Measurement of 4x20-Gb/s All-Optical OFDM Signals by Using Loop-Assisted Coherent Matched Detector,” 42th European Conference on Optical Communication (ECOC 2016), Dusseldorf, Germany, Tu.1.E.2, Sep. 2016.
36. T. Sakamoto, “Dispersion Compensation Scheme for Time-Frequency-Domain Multiplexed 4x/8x Ultra-Wideband Multi-Carrier Signals,” The 21th OptoElectronics and Communications Conference (OECC2016), WA2-26, Niigata, Japan, June 2016.
37. T. Sakamoto, “Dual Coherent Sampling with Low-Speed Digital Signal Processing for Monitoring Carrier-Phase-Drifted Constellations,” Conference on Laser and Electro Optics (CLEO 2016), San Jose, USA, SM2F.2, June 2016.
38. T. Sakamoto, G.W. Lu, and T. Kawanishi, “Investigation on Phase-Sensitive Fiber Nonlinearity Cancellation in Conjugated-Paired Radio-on-Fiber System,” Conference on Laser and Electro Optics (CLEO 2016), San Jose, USA, JW2A.130, June 2016.
39. T. Sakamoto, “Opto-Electronic Time-Frequency Domain Sampling for Ultra High-Bandwidth Multi-Carrier Signal Detection (invited),” the 2016 Optical Fiber Communication Conference (OFC2016), Th3H.4, Anaheim, USA, Mar. 2016.
40. T. Sakamoto, and I. Morohashi, “Investigation on electro-optic optical comb generation with higher spectral resolution and bandwidth”, SPIE Photonics West, San Francisco, USA, 9742-18, Feb. 2016.
41. T. Sakamoto, “Optical comb/pulse synthesis by electro-optic modulation (invited),” Energy Materials Nanotechnology Meeting on Ultrafast Research (EMN Ultrafast), D14, Las Vegas, USA, Nov. 2015.
42. T. Sakamoto, “Radio over fiber systems: state of the art and perspectives (workshop, invited)”, 41th European Conference on Optical Communication (ECOC2015), Workshop - Microwave Photonics, Valencia, Spain, Sep. 2015.
43. T. Sakamoto, G.W. Lu, and T. Kawanishi, “Oppositely-Biased Dual-polarization IQ Modulators for Nonlinearity-Tolerant Polarization-Multiplexed Phase-Conjugated Twin-Signals Generation”, 41th European Conference on Optical Communication (ECOC2015), Valencia, Spain, Th.1.4.6, Oct. 2015.
44. T. Sakamoto, “Impact of Tight Optical Filtering on Orthogonal Time-Frequency Domain Multiplexed Signals in Wavelength-Selective Switching Systems,” The Photonics in Switching (PS2015), Florence, Italy, SC2-1, Sep. 2015.
45. T. Sakamoto, “Simultaneous Dual-Channel Reception Scheme for Incoherently Multiplexed Dual-Carrier Signals,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2015), Munich, Germany, CI-P.3, June 2015.
46. T. Sakamoto, “Dispersion Compensation Scheme for Ultra-Wideband Coherent Matched Detection,” Conference on Laser and Electro Optics (CLEO 2015), San Jose, USA, SW3M.3, May 2015.
47. T. Sakamoto, G.-W. Lu, and T. Kawanishi, “Fiber Nonlinearity Tolerance of Traceback Equalization for Non-Uniformly Distorted QAM Signals,” Conference on Laser and Electro Optics (CLEO 2015), San Jose, USA, JTh2A.49, May 2015.
48. T. Sakamoto, G.-W. Lu, and T. Kawanishi, “Loop-Assisted Multi-Input-Multi-Output Coherent Matched Detector for Ultra High-Bandwidth Parallel Optical Time-Frequency Domain Sampling,” the 2015 Optical Fiber Communication Conference (OFC2015), M2E.6, Los Angeles, USA, Mar. 2015.
49. T. Sakamoto, G.-W. Lu, and T. Kawanishi, “Conjugated-Paired Radio-on-Fiber Transmission Scheme Highly Tolerant against Optical Fiber Nonlinearity,” the 2014 IEEE International Topical Meeting on Microwave Photonics (MWP 2014), Sapporo, Japan, WD-6, Oct. 2014.
50. T. Sakamoto, “Impact of Clock-Phase Misalignment on optical Multiplexing for Time-Interleaved Carrier-Suppressed Return-to-Zero Signaling,” the IEEE Photonics Conference 2014 (IPC2014), TuG1.1, San Diego, USA, Oct. 2014.
51. T. Sakamoto, G.-W. Lu, and T. Kawanishi, “Electo-Optic Dual-Channel Coherent Signal Emulator,” the IEEE Photonics Conference 2014 (IPC2014), TuG2.2, San Diego, USA, Oct. 2014.
52. T. Sakamoto, G.-W. Lu, and T. Kawanishi, “Phase-Conjugated Twin Signals Generation with Oppositely-Biased Paired IQ Modulators,” the IEEE Photonics Conference 2014 (IPC2014), TuG1-4, San Diego, USA, Oct. 2014.
53. T. Sakamoto, G.-W. Lu, T. Kawanishi, “Time-Interleaved Carrier-Suppressed Return-to-Zero QPSK for Filter-less Dual-Carrier Transmission,” the 2014 Optical Fiber Communication Conference (OFC2014), Th2A.63., San Francisco, USA, Mar. 2014.
54. T. Sakamoto, “Time-Frequency Domain Signaling/Multiplexing for Optical Filter-less Networking (invited),” OSA Topical Meeting, Photonic Networks and Devices (NETWORKS), Rio Mar Beach Resort, Puerto Rico, USA, NW3C.2, Jul. 2013.
55. T. Sakamoto, R.P. Scott, and S.J.B. Yoo, “Optimization of Discrimination Filters for Orthorgonal Time-Frequency Domain Multiplexing,” The 18th OptoElectronics and Communications Conference (OECC2013), MR1-7, Kyoto, Japan, Jul. 2013.
56. T. Sakamoto, G.W. Lu, T. Kawanishi, “Traceback Equalization against Modulation Non-uniformity in QAM Transmitters,” The 18th OptoElectronics and Communications Conference (OECC2013), MR1-5, Kyoto, Japan, Jul. 2013.
57. T. Sakamoto, R.P. Scott, and S.J.B. Yoo, “Improved Phase Matching by Paired-Fiber Coherent Matched Detection for Time-Frequency Domain Demultiplexing,” Conference on Laser and Electro Optics (CLEO2013), San Jose, USA, CF1F4, June 2013
58. T. Sakamoto, G.-W. Lu, T. Kawanishi, “Traceback Equalization for Non-Uniformly Synthesized Optical QAM Signals,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2013), CI-1.4., Munich, Germany, May 2013.
59. T. Sakamoto, G.-W. Lu, T. Kawanishi, “Filter-less “Multi-Tone Coherent Orthogonal Detection for Multi-Channel Reception of Super-Channel/OFDM Signals,” the 2013 Optical Fiber Communication Conference (OFC2013), JTh2A.47., Anaheim, USA, Mar. 2013.
60. T. Sakamoto, “Optical Multicarrier Source for Orthogonal Time/Frequency Division Multiplexing,” The 16th OptoElectronics and Communications Conference (OECC2012), P-1-19, Busan, Korea, Jul. 2012.
61. T. Sakamoto, “Coherent Matched Detection with Multi-Input-Multi-Output Equalization for Demultiplexing/Demodulation of Orthogonally Time/Frequency Domain Multiplexed Signal,” Conference on Laser and Electro Optics (CLEO2012), San Jose, USA, CF1F4, May 2012.
62. T. Sakamoto, T. Kawanishi, and M. Izutsu,“Oscillation Frequency Controlling/Switching of Resonant-Electrode-Type Photo-Electronic Oscillator by Offset Injection Locking,” Conference on Laser and Electro Optics (APMP2012), Kyoto, Japan, PB-7, Apr. 2012.
63. T. Sakamoto, “Optical Comb and Pulse Generation from CW light (invited),” 2011 IEEE International Topical Meeting on Microwave Photonics (MWP 2011), Singapore, 9099, Oct. 2011.
64. T. Sakamoto, A. Kanno, T. Kawanishi, N. Fontaine, D. Geisler, R. Scott, and S. Yoo, “160-Gb/s Orthogonal Time-Frequency Domain Multiplexed QPSK for Ultra-High-Spectral-Efficient Transmission”, 37th European Conference on Optical Communication (ECOC2011), Geneva, Switzerland, We.10.P1.77, Sep. 2011.
65. T. Sakamoto, “Optical Comb and Pulse Generation from CW light (tutorial, invited)”, Conference on Laser and Electro Optics (CLEO2011), Baltimore, USA, CMBB1, May 2011.
66. T. Sakamoto, A. Chiba, and T. Kawanishi, “Nonlinear Distortion of 16QAM Constellations in Intradyne Coherent Receiver”, Conference on Laser and Electro Optics-European Quantum Electronics Conference (CLEO/Europe-EQEC 2011), Munich, Germany, CI.P.5, May 2011.
67. T. Sakamoto, A. Chiba, T. Kawanishi, “Phase Division Analysis for Intradyne Coherent Detection in Nonlinear Regime,” the 2011 Optical Fiber Communication Conference (OFC2011), JThA6, San Diego, USA, Feb. 2011.
68. T. Sakamoto, A. Chiba, A. Kanno, I. Morohashi, and T. Kawanishi, “Real-Time Homodyne Reception of 40-Gb/s BPSK Signal by Digital Optical Phase-Locked Loop,” 36th European Conference on Optical Communication (ECOC2010), P3.12, Turin, Italy, Sep. 2010.
69. T. Sakamoto, A. Chiba, A. Kanno, and T. Kawanishi, “Digital Optical Costas Loop for Coherent Demodulation of 10-Gb/s BPSK,” The 15th OptoElectronics and Communications Conference (OECC2010), 9B3-10, Sapporo, Japan, Jul. 2010.
70. T. Sakamoto, G.W. Lu, A. Chiba, T. Kawanishi, and T. Miyazaki, “Coherent Demodulation of 10-Gb/s Optical Minimum-Shift Keying,” the 2010 Optical Fiber Communication Conference (OFC2010), JThA6, San Diego, USA, Mar. 2010.
71. T. Sakamoto, G.W. Lu, A. Chiba, and T. Kawanishi, “Digital Optical Phase Locked Loop for Real-Time Coherent Demodulation of Multilevel PSK/QAM,” the 2010 Optical Fiber Communication Conference (OFC2010), OMS5, San Diego, USA, Mar. 2010.
72. T. Sakamoto, A. Chiba, I. Morohashi, and T. Kawanishi, “Optical trellis-coded modulation with multi-parallel MZM”, 35th European Conference and Exhibition on Optical Communication (ECOC 2009), Vienna, Austria, P3.09, Sep. 2009.
73. T. Sakamoto, A. Chiba, and T. Kawanishi, “Optical quadrature-amplitude modulation at high bit rate (invited),” 14th OptoElectronics and Communications Conference (OECC/IOOC 2009), Hong Kong, ThP5, Jul. 2009. (Invited paper)
74. T. Sakamoto, I. Morohashi, T. Kawanishi, and I. Hosako, “Picosecond Pulse Generation Using Low-Driving-Voltage MZM Driven with Step Recovery Diodes”, Conference on Laser and Electro Optics (CLEO/IQEC2009) in Baltimore, USA, JWA36, May 2009.
75. T. Sakamoto, A. Chiba, and T. Kawanishi, “16 QAM modulation of 50 Gb/s or higher (invited),” the 2009 Optical Fiber Communication Conference (OFC2009), OWG5, San Diego, USA, Mar. 2009. (Invited paper)
76. T. Sakamoto, A. Chiba, and T. Kawanishi, “Electro-Optic Synthesis of 8PSK by Quad-Parallel Mach-Zehnder Modulator,” the 2009 Optical Fiber Communication Conference (OFC2009), OTuG4, San Diego, USA, Mar. 2009.
77. T. Sakamoto, I. Morohashi, and T. Kawanishi, “Mach-Zehnder-Modulator-Based Flat Comb Generator with Auto Bias Control,” 2008 IEEE International Topical Meeting on Microwave Photonics (MWP 2008), Goldcoast, Australia, 9099, Oct. 2008.
78. T. Sakamoto, A. Chiba, and T. Kawanishi, “50-km SMF transmission of 50-Gb/s 16 QAM generated by quad-parallel MZM,” 34th European Conference on Optical Communication (ECOC2008), Brussels, Bergium, Tu.1.E.3, Sep. 2008.
79. T. Sakamoto, T. Kawanishi, M. Izutsu, “Photo-Electronic Local Oscillators for Microwave Photonics,” 2008 Japan-Indo Workshop on Microwave, Photonics, and Communication Systems, Tokyo, Japan, WA-M3, Jul. 2008.
80. T. Sakamoto, I. Morohashi, T. Kawanishi, and M. Tsuchiya, “Twin-Color Picosecond Pulse Generation Using Single-Stage MZM-Based Flat Comb Generator,” the 2008 Optical Fiber Communication Conference (OFC2008), JThA43, San Diego, USA, 28 Feb. 2008.

81. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Electro-Optic Ultra-Flat Comb Generation Using Mach-Zehnder Modulator in Push-Pull Operation Mode,” Lasers and Electro-Optics Society (LEOS) Annual meeting 2007, Lake Buena Vista, Florida, USA, WM4, Oct. 2007.

82. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Optimization of Electro-Optic Comb Generation Using Conventional Mach-Zehnder Modulator,” 2007 IEEE International Topical Meeting on Microwave Photonics (MWP 2007), Victoria, Canada, Th.1.3., Oct. 2007.
83. T. Sakamoto, A. Chiba, and T. Kawanishi, “50-Gb/s 16 QAM by Quad-Parallel Mach-Zehnder Modulator,” 33th European Conference on Optical Communication (ECOC2007), Berlin, Germany, PDP2.8, Sep. 2007 (post deadline paper).
84. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Multi-Frequency Heterodyne System for All-Optical-Technology-Free Ultrafast Optical Waveform Measurement”, 33th European Conference on Optical Communication (ECOC2007), Berlin, Germany, 5.5.6, Sep. 2007.
85. T. Sakamoto, T. Kawanishi, M. Tsuchiya, and M. Izutsu, “Super-Stable Optical Comb and Pulse Generation using Electro-Optic Modulation (invited),” Lasers and Electro-Optics Society (LEOS) summer topical2007, Portland, USA, MC3.1, Jul. 2007. (Invited paper)
86. T. Sakamoto, T. Kawanishi, and M. Izutsu, “50-nm Wavelength Tunable Ultra-Flat Comb Generation Using Single-Stage Mach-Zehnder Modulator,” 12th OptoElectronics and Communications Conference (OECC/IOOC 2007), Yokohama, Japan, 13D3-7, Jul. 2007.
87. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Optoelectronic Oscillation Using Mach-Zehnder Modulator for Optical Two-Tone Signal Generation,” Asia-Pasific Microwave Photonics Conference (AP-MWP 2007), Jeju, Korea, pp. 273-276, Apr. 2007.
88. T. Sakamoto, A. Chiba, T. Kawanishi and M. Izutsu, “CPFSK/MSK Modulation with a Monolithic Integrated LiNbO3 Modulator,” the 2007 Optical Fiber Communication Conference (OFC2007), OThD6, Anaheim, USA, 29 Mar. 2007.
89. T. Sakamoto, T. Kawanishi, M. Tsuchiya and M. Izutsu “Picosecond Pulse Generation with a Single-Stage Standard Mach-Zehnder Modulator Employed”, 32th European Conference on Optical Communication (ECOC2006), Cannes, French, WE4.6.2, Sep. 2006.
90. T. Sakamoto, T. Kawanishi, M. Izutsu, “Resonant-Electrode-Type Optoelectronic Oscillator (RE-OEO) as a Single-Mode Oscillator,” Progress In Electromagnetics Research Symposium (PIERS 2006), Tokyo, Japan, p.345, Aug. 2006.
91. T. Sakamoto, T. Kawanishi, and M. Izutsu, “19x10-GHz Electro-Optic Ultra-Flat Frequency Comb Generation Only Using Single Conventional Mach-Zehnder Modulator,” Conference on Laser and Electro Optics (CLEO/IQEC2006), in Long Beach, California, CMAA5, May 2006.
92. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Frequency-Modulation on Radio-over Fiber Signal Generated from Resonant-Electrode-Type Optoelectronic Oscillator,” Asia-Pasific Microwave Photonics Conference (AP-MWP 2006), J-4, Kobe, Japan, Apr. 2006.
93. T. Sakamoto, T. Kawanishi, and M. Izutsu, “50-nm Wavelength-Tunable Self-Oscillating Electro-Optic Frequency Comb Generator”, the 2006 Optical Fiber Communication Conference (OFC2006) in Anaheim, California, OWI25, Mar. 2006.
94. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Real-Time Evaluation of Microwave Injection Locking Property for Resonant-Electrode-Type Optoelectronic Oscillator,” International Topical Meeting on Microwave Photonics (MWP 2005), T2.4, Seoul, South Korea, Oct. 2005.
95. T. Sakamoto, T. Kawanishi and M. Izutsu, “Optical Frequency Comb Generation Using Asymmetrically Dual-Driven Mach-Zehnder Modulator,” 31th European Conference on Optical Communication (ECOC 2005), We4.P.121, Glasgow, Scotland, Sep. 2005.
96. T. Sakamoto, T. Kawanishi and M. Izutsu, “Initial Phase Control Method for High-Speed External Modulation in Optical Minimum-Shift Keying Format,” 31th European Conference on Optical Communication (ECOC 2005), Th2.2.5, Glasgow, Scotland, Sep. 2005.
97. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Continuous-Phase External Modulation Scheme for Optical Minimum-Shift Keying”, The 10th OptoElectronics and Communications Conference (OECC2005), Seoul, Korea, 7P-025, Jul. 2005.
98. T. Sakamoto, T. Kawanishi, and M. Izutsu, “High-Speed CPFSK WDM System Using Optical FSK Modulator”, The 10th OptoElectronics and Communications Conference (OECC2005), Seoul, Korea, 7B3-4, Jul. 2005.
99. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Optoelectronic Oscillator Using Push-Pull Mach-Zehnder Modulator Biased at Null Point for Optical Two-Tone Signal Generation,” Conference on Laser and Electro Optics (CLEO/IQEC2005) in Baltimore, USA, CTuN5, May 2005.
100. T. Sakamoto, T. Kawanishi, S. Shinada and M. Izutsu, “Self-Oscillating Millimeter-Wave Generation Using Reciprocating Optical Modulator,” Conference on Laser and Electro Optics (CLEO/IQEC2005), in Baltimore, USA, CTuN3, May 2005.
101. T. Sakamoto, T. Kawanishi, T. Miyazaki, and M. Izutsu, “Novel Modulation Scheme for Optical Continuous-Phase Frequency-Shift Keying,” the 2005 Optical Fiber Communication Conference (OFC2005) in Anaheim, California, OFG2, Feb. 2005 .
102. T. Sakamoto, T. Kawanishi, S. Shinada and M. Izutsu, “Data modulation schemes for millimeter-wave-band radio-on-fiber signal using a reciprocating optical modulating upconvertor,” The 6th Japan-Korea Joint Workshop on Microwave Photonics, (KJMWP 2005), T2-4, Jan. 2005.
103. T. Sakamoto, T. Kawanishi, M. Izutsu, “Pulse carving technology for high-quality external frequency-shift-keying modulation,” Eighth International Symposium on Contemporary Photonics Technology (CPT 2005), G-3, Jan. 2005.
104. T. Sakamoto, T. Kawanishi, S. Shinada and M. Izutsu, “Photo-electronic Oscillator for Frequency Comb Generation Fed Back with Asymmetric-filtered Deeply Phase-modulated Light,” International Topical Meeting on Microwave Photonics (MWP 2004), Ogunquit, Maine, U.S., MC16. Oct. 2004.
105. T. Sakamoto, S. Shinada, T. Kawanishi and M. Izutsu, “Optoelectronic Oscillator using Resonant-electrode-type LiNbO₃ Modulator for FM Subcarrier Generation,” 30th European Conference on Optical Communication (ECOC-IOOC 2004), Stockholm, Sweden, WE4.P.49, Sep. 2004.
106. T. Sakamoto, T. Kawanishi, S. Shinada and M. Izutsu, “Optoelectronic oscillation using resonant-electrode-type LiNbO₃ modulator,” 9th Optoelectronics and Communications Conference/3rd International conference on Optical internet (OECC/COIN2004), Pacifico Yokohama, Japan, 15E3-5, Jul. 2004.
107. T. Sakamoto, Y. Fukuchi, and K. Kikuchi, “Ultra-fast Operation of Optical Limiter Based on Modulation Instability in Highly-nonlinear Dispersion-shifted Fiber,” 9th Optoelectronics and Communications Conference/3rd International conference on Optical internet (OECC/COIN2004), Pacifico Yokohama, Japan, 16E1-5, Jul. 2004.
108. T. Sakamoto, S. Shinada, T. Kawanishi and M. Izutsu, “Millimeter-wave-band amplitude-shift-keyed radio-on-fiber signal generation with a reciprocating optical modulator,” the 2004 Optical Fiber Communication Conference (OFC2004) in Los Angeles, California, FE2, Feb. 2004.
109. T. Sakamoto, S. Shinada, T. Kawanishi, M. Izutsu, Y. Shimakura, S. Matsumoto and K. Yoshiara, “External modulation on a reciprocating optical modulator for millimeter-wave-band radio-on-fiber signal generation,” Seventh International Symposium on Contemporary Photonics Technology (CPT 2004), P-9, Jan. 2004.
110. T. Sakamoto, T. Tanemura and K. Kikuchi, “Nonlinear Optical Loop Mirror with an Optical Bias Controller for Achieving Full-Swing Operation of Gate Switching,” 29th European Conference on Optical Communication (ECOC-IOOC 2003), Rimini, Italy, Mo.3.2.3., Sep. 2003.
111. T. Sakamoto, K. Seo, K. Taira, N. Moon and K. Kikuchi, “Polarization-insensitive All-Optical Time-Division Demultiplexer using a Fiber Four-Wave Mixer and a Peak-Holding Optical Phase-Locked Loop,” 29th European Conference on Optical Communication (ECOC-IOOC 2003), Rimini, Italy, Mo.3.2.1, Sep. 2003.

112. A. Chiba, Y. Moteki, N. Kobayashi, T. Sakamoto, and K. Takada, “Numerical analysis on double frequency-spacing optical comb for optimization of RF signals driving I-Q MZM,” the Pacific Rim Conference on Lasers and Electro-Optics (CLEO-Pacific Rim), Hong Kong, F2A.8, Jul. 2018.

113. G.-W. Lu, R.S. Luis, H. Toda, J. Cui, T. Sakamoto, H. Wang, Y. Ji, and N. Yamamoto, “28Gbps PAM4 60GHz Radio over Fiber System by Injection Locking Two-Tone Light to Directly-Modulated Laser,” Conference on Laser and Electro Optics (CLEO 2018), San Jose, USA, JTh2A.195, May 2018.

114. T. Umezawa, T. Sakamoto, A. Kanno, N. Yamamoto, T. Kawanishi, “Direct coupling between 2D-PDA and triangular/square shape aligned MCF for universal SDM photoreceiver,” Conference on Laser and Electro Optics (CLEO 2018), San Jose, USA, STh4B.5, May 2018.

115. T. Umezawa, T. Sakamoto, A. Kanno, K. Kusakata, K. Akahane, A. Matsumoto, N. Yamamoto, T. Kawanishi, “Dense SDM 32-pixel 2-D photodetector array,” 43th European Conference on Optical Communication (ECOC 2017), P1.SC2.29, Sweden, Sep. 2017.

116. G.W. Lu, R. Luis, J.M.D. Mendinueta, T. Sakamoto, N. Yamamoto, “Optical Subcarrier Processing for Nyquist SCM via Coherent Spectrum Overlapping in FWM with Coherent Pump,” 43th European Conference on Optical Communication (ECOC 2017), P1.SC1.5, Sweden, Sep. 2017.
117. I. Morohashi, Y. Irijmajiri, A. Kawakami, T. Sakamoto, N. Sekine, A. Kasamatsu, I. Hosako, “Frequency-Selective Multi-Frequency THz Reference Source Using Mach-Zehnder-Modulator-Based Flat Comb Generator for Simultaneous Phase-Locking of THz-QCLs,” The 42th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2017), Cancun, Mexico, WB2.3, Aug. 2017.

118. A. Chiba, N. Kobayashi, Y. Moteki, T. Sakamoto, K. Takada, “Generation of Wide Frequency-Spacing Optical Frequency Comb Composed of Odd/Even Multiple Harmonics,” the Pacific Rim Conference on Lasers and Electro-Optics (CLEO-Pacific Rim)/ The 22th OptoElectronics and Communications Conference (OECC2017), P1-071, Singapore, July 2017.

119. T. Umezawa, T. Sakamoto, K. Akahane, A. Matsumoto, A. Kanno, N. Yamamoto, T. Kawanishi, “10-GHz 32-pixel 2-D photodetector array for advanced optical fiber communications,” Conference on Laser and Electro Optics (CLEO 2017), San Jose, USA, SF2I.1, May 2017.

120. I. Morohashi, Y. Irimajiri, M. Kumagai1, A. Kawakami, T. Sakamoto, N. Sekine, A. Kasamatsu, I. Hosako, “Simultaneous Phase-Locking of Quantum Cascade Lasers Using Multi-Frequency THz Source System Composed of MZM-Based Flat Comb Generator,” Conference on Laser and Electro Optics (CLEO 2017), San Jose, USA, SM4J.2, May 2017.

121. G.-W. Lu, X. Guan, T. Sakamoto, N. Yamamoto, C.C. Chan, “Simplified Self-Homodyne Detection for Optical OFDM with Inserted Pilot Sub- Samples and its Application in Downstream of Optical Access Networks,” Conference on Laser and Electro Optics (CLEO 2017), San Jose, USA, STh1O.5, May 2017.

122. I. Morohashi, M. Kirigaya, I. Katayama, Y. Irijmajiri, T. Sakamoto, N. Sekine, A. Kasamatsu, I. Hosako, “Accurate frequency measurement of THz radiations by electrooptic sampling using a modulator-based optical comb generator for frequency stabilization of CW-THz sources,” 2nd International Workshop on Photonics Applied to Electromagnetic Measurements, Zurich, Switzerland, 2-2, May 2017.

123. I. Morohashi, T. Sakamoto, N. Sekine, A. Kasamatsu, I. Hosako, “A CW-THz source with broadband tunability and high frequency accuracy using an optical-modulator-based flat comb generator for high precision spectroscopy,” Optical Terahertz Science and Technology (OTST 2017), London, UK, PS1:29, Apr. 2017.

124. T. Kuri, and T. Sakamoto, “Offset-Frequency-Spaced Two-Tone Optical Coherent Detection Scheme of Radio-over-Fiber Signaland Its Polarization Diversity Technique (invited),” Energy Materials Nanotechnology Meeting on Optical Communications (EMN Optical Communications), A13, pp. 14-15, Dubai, UAE, Nov. 2016. (invited)
125. I. Morohashi, Y. Irimajiri, M. Kumagai, A. Kawakami, T. Sakamoto, N. Sekine, A. Kasamatsu, and I. Hosako, “Terahertz Source with Broad Frequency Tunability Up To 3.8 THz Using MZ-FCG for Frequency Reference in Phase-Locking of THz Source Devices,” the 2016 IEEE International Topical Meeting on Microwave Photonics (MWP 2016), Long Beach, USA, TuMP14, Nov. 2016.
126. T. Kuri, and T. Sakamoto, “Phase-Fluctuation-Cancelled Component Combining Technique in Offset-Frequency-Spaced Two-Tone Coherent Detection System,” the IEEE Photonics Conference 2016 (IPC2016), Hawaii, USA, WP13, Oct. 2016.
127. I. Morohsashi, Y. Irimajiri, T. Sakamoto, N. Sekine, A. Kasamatsu, and I. Hosakao, “Multi-Frequency THz Reference Source by Spectral Synthesis of Optical Combs for Simultaneous Phase-Locking of THz Sources,” 41th International Conference on Infrared, Millimeter, and Terahertz Waves, MP5P.12.28, Copenhagen, Denmark, Sep. 2016.
128. G.-W. Lu, T. Sakamoto, Y. Kamio, “Differential Coding in Polarizations with Half-Symbol-Period Timing Offset for Coherent PM-QPSK to improve Phase-Noise Tolerance,” The 21th OptoElectronics and Communications Conference (OECC2016), TuB4-2, Niigata, Japan, June 2016.
129. I. Morohashi, Y. Irimajiri, M. Kumagai, A. Kawakami, T. Sakamoto, N. Sekine, A. Kasamatsu, I. Hosako, “Frequency Reference Source in the THz Range Using Mach-Zehnder-Modulator-Based Flat Comb Generator,” Conference on Laser and Electro Optics (CLEO 2016), San Jose, USA, SM1H.3, May 2016.
130. G.-W. Lu, T. Bo, T. Sakamoto, K. Akahane, B.J. Puttnam, C.C. Chan, N. Yamamoto, “Experimental Investigation of Phase-Sensitive Amplification in Quantum-Dot Semiconductor Optical Amplifier,” Conference on Laser and Electro Optics (CLEO 2016), San Jose, USA, STu3G.5, May 2016.
131. I. Morohsashi, M. Kitagawa, Y. Kaneko, I. Katayama, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, and I. Hosakao, "Frequency measurement of THz waves by electro-optic sampling using Mach-Zehnder-modulator-based flat comb generator,” SPIE Photonics West, San Francisco, USA, 9747-30, Feb. 2016.
132. T. Kuri, T. Sakamoto, and N. Yamamoto, "Offset-frequency-spaced two-tone coherent transmission of radio-over-fiber signal with recovered-constellation combining technique,” SPIE Photonics West, San Francisco, USA, 9742-18, Feb. 2016.
133. Y. Awaji, J. Sakaguchi, T. Sakamoto, Atsushi Kanno, Motohiro Kumagai, Ying Li, Tetsuya Ido, Naoya Wada, Tetsuya Kawanishi, “Perspective of New Infrastructure of Fiber Communication: The Role of Coherent Light in SDM Era,” Frontiers in Optics / Laser Science 2015, San Jose, USA, Oct. 2015. [invited]
134. I. Morohsashi, M. Kirigaya, Y. Kaneko, I. Katayama, Y. Irimajiri, T. Sakamoto, N. Sekine, A. Kasamatsu, and I. Hosakao, “Electro-Optic Sampling Detection of CW-THz Signals Using MZM-Based Flat Comb Generator,” First PEM International Workshop, SB-3, Kyoto, Aug. 2015.
135. I. Morohsashi, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, and I. Hosakao, “Generation of cw-THz waves with high frequency accuracy by Mach-Zehnder-modulator-based flat comb generator for phase-locking of THz-QCLs,” 40th International Conference on Infrared, Millimeter, and Terahertz Waves, TS-60, Hong Kong, Aug. 2015.
136. A. Matsumoto. K. Akahane, T. Sakamoto, N. Yamamoto, T. Kawanishi, “1550nm-band Quantum Dot Semiconductor Optical Amplifier for Mode Division Multiplexing,” The 7th International Symposium on Ultrafast Photonic Technologies (ISUPT2015) and International Symposium on extremely advanced transmission technology (EXAT 2015), Kyoto, Jul. 2015.
137. I. Morohsashi, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, and I. Hosakao, “Generation method for bandwidth-limited terahertz pulses by spectral synthesis of optical comb generated by a MZM-based flat comb generator,” The 36th Progress In Electromagnetics Research Symposium (PIERS), 2A0-28, 876, Plague, Czech Republic, Jul. 2015.
138. I. Morohsashi, Y. Irimajiri, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, and I. Hosakao, “CW Terahertz Source with Wideband Frequency Tunability Using Optical-Modulator-Based Frequency Comb Source for Frequency-Sweep High Resolution Spectroscopy,” The 3rd International Symposium on Microwave/Terahertz Science and Applications (MTSA 2015), P2-7, Okinawa, Japan, Jul. 2015.
139. T. Kuri, T. Sakamoto, and T. Kawanishi, "Recovered-Constellation Combining for Polarization-Insensitive Offset-Frequency-Spaced Two-Tone Optical Coherent Detection Scheme in Radio-over-Fiber Systems," The 20th OptoElectronics and Communications Conference (OECC 2015), JMoD44, Shanghai, China, June 2015.
140. I. Morohsashi, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, and I. Hosako, “80 fs Optical Pulse Generation Using Mach- Zehnder-Modulator-Based Flat Comb Generator and Dispersion-Flattened Dispersion-Decreasing Fibre,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2015), CF-P.10, Munich, Germany, June 2015.
141. G.W. Lu, T. Sakamoto, T. Kawanishi, “Pump-Phase-Noise-Free Multichannel Wavelength Multicasting for QAM Signals using Coherent Multi-Carrier Pump,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2015), CI-P.11, Munich, Germany, June 2015.
142. R.B. Jin, R. Shimizu, I. Morohashi, K. Wakui, M. Takeoka, S. Izumi, T. Sakamoto, M. Fujiwara, T. Yamashita, S. Miki, H. Terai, Z. Wang, and M. Sasaki, “Efficient Generation of Twin Photons at Telecom Wavelengths with 10 GHz Repetition-Rate-Tunable Comb Laser,” Conference on Laser and Electro Optics (CLEO 2015), San Jose, USA, FM3D.3, May 2015.
143. I. Morohsashi, Y. Irimajiri, M. Kumagai, A. Kawakami, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, and I. Hosakao, “Measurement of Terahertz Spectrum Using Heterodyne Technique with LO signal Generated by an MZM-Based Flat Comb Source,” Conference on Laser and Electro Optics (CLEO 2015), San Jose, USA, JW2A.62, May 2015.
144. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Multichannel Wavelength Multicasting for QAM Signals Free of Pump-Phase-Noise using Flexible Coherent Multi-Carrier Pump,” Conference on Laser and Electro Optics (CLEO 2015), San Jose, USA, SM1M.3., May 2015.
145. T. Kuri, T. Sakamoto, T. Kawanishi, “Laser-Phase-Fluctuation-Insensitive Optical Coherent Transmission of 16-QAM Radio-over-Fiber Signal with Offset-Frequency-Spaced Two-Tone Local Light,” the 2015 Optical Fiber Communication Conference (OFC2015), W4G.1, Los Angels, USA, Mar. 2015.
146. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Pump-Phase-Noise-Tolerant Wavelength Multicasting for QAM Signals using Flexible Coherent Multi-Carrier Pump,” the 2015 Optical Fiber Communication Conference (OFC2015), M2E.2, Los Angels, USA, Mar. 2015.
147. J. Sakaguchi, T. Sakamoto, A. Kanno, Y. Awaji, N. Wada, T. Kawanishi, “Optical Comb-based Versatile Wavelength Division Multicasting Add-drop Node for Efficient WDM Networks,” the 2015 Optical Fiber Communication Conference (OFC2015), TH2A.6, Los Angels, USA, Mar. 2015.
148. D. Wang, M. Zhang, G.-W. Lu J. Qin, T. Sakamoto, K. Akahane, N. Yamamoto, T. Kawanishi, “Multifunctional All-optical Signal Processing Scheme for Simultaneous Multichannel WDM Multicast and XOR Logic Gates Based on FWM in QD-SOA,” the 2015 Optical Fiber Communication Conference (OFC2015), TH2A.5, Los Angels, USA, Mar. 2015.
149. T. Kuri, T. Sakamoto, T. Kawanishi, “Laser-phase-fluctuation-insensitive offset-frequency-spaced two-tone optical coherent detection scheme with digital-signal-processing technique for radio-over-fiber systems,” SPIE Photonics West, 9387-12, San Francisco, USA, Feb. 2015.
150. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Wavelength Conversion of High-Order QAM Signals for Future Transparent All-Optical Networks (Invited),” 13th International Conference on Optical Communications and Networks, S32.4, Suzhou, China, Nov. 2014.
151. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Flexible High-Order QAM Transmitters for Elastic Optical Networks Invited talk (Invited),” 13th International Conference on Optical Communications and Networks, M12.2, Suzhou, China, Nov. 2014.
152. I. Morohashi, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, and I. Hosako “Generation of Arbitrary Patterned Optical Pulse Trains for THz-UWB Application,” the 2014 IEEE International Topical Meeting on Microwave Photonics (MWP 2014), Sapporo, Japan, TuEC-7, Oct. 2014.
153. A. Chiba, T. Kawanishi, T. Sakamoto, K. Higuma, K. Takada, and M. Izutsu, “Evaluation of Crosstalk in optical cross-bar switch driven by high-frequency signal,” the 2014 IEEE International Topical Meeting on Microwave Photonics (MWP 2014), Sapporo, Japan, TuEG-6, Oct. 2014.
154. T. Kuri, T. Sakamoto, T. Kawanishi, “An Effect of Detuning Frequency in DSP-Assisted Offset-Frequency-Spaced Two-Tone Optical Coherent Detection for Radio-over-Fiber Signal,” the IEEE Photonics Conference 2014 (IPC2014), MD2.1, San Diego, USA, Oct. 2014.
155. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Data Overlay in Optical Networks Through Level-Scalable Flexible Modulation and its Application in Multicast Overlay for WDM-PON,” the IEEE Photonics Conference 2014 (IPC2014), MD2.4, San Diego, USA, Oct. 2014.
156. Guo-Wei Lu, André Albuquerque, Benjamin J. Puttnam, Takahide Sakamoto, Miguel Drummond, Rogério Nogueira, Atsushi Kanno, Satoshi Shinada, Naoya Wada, and Tetsuya Kawanishi,“Pump-Linewidth-Tolerant Optical Data Exchange between 16QAM and QPSK with 50-GHz Channel-Spacing using Coherent DFB Pump,” European Conference and Exhibition on Optical Communication (ECOC), Cannes, France, P.2.18, Sep. 2014.
157. Guo-Wei Lu, Takahide Sakamoto, Tetsuya Kawanishi, “Coherently-Pumped FWM in HNLF for 16QAM Wavelength Conversion Free of Phase Noise from Pumps,” European Conference and Exhibition on Optical Communication (ECOC), Cannes, France, P.1.16, Sep. 2014.
158. I. Morohashi, Y. Chiba, Y. Irimajiri, T. Sakamoto, I. Katayama, N. Sekine, T. Kawanishi, and I. Hosako, “Optimization of Signal-to-Noise Ratio of Broadband Optical Combs for High Accurate CW THz Wave Generation,” 39th Int. Conf. on Infrared, Millimeter, and THz Waves (IRMWW2014), 2811334, Arizona, Aug. 2014.
159. I. Morohashi, T. Sakamoto, T. Kawanishi, N. Sekine and I. Hosako, “Broadband optical comb generation using a MZM-based flat comb generator and a dispersion-shifted fiber for high accurate terahertz wave generation,” The 19th OptoElectronics and Communications Conference (OECC2014), pp. 845-846., Melbourne, Australia, Jul. 2014.
160. Guo-Wei Lu, André Albuquerque, Benjamin J. Puttnam, Takahide Sakamoto, Miguel Drummond, Rogério Nogueira, Atsushi Kanno, Satoshi Shinada, Naoya Wada, and Tetsuya Kawanishi, "Coherently-Pumped 20Gbaud 16QAM Optical Wavelength Shifting Free of Phase Noise from Pumps,” The 19th OptoElectronics and Communications Conference (OECC), Mebourne, Australia, WE7F-3, Jul. 2014.
161. I. Morohashi, Y. Irimajiri, M. Kumagai, A. Kawakami, T. Sakamoto, N. Sekine, S. Ochiai, S. Tanaka, T. Kawanishi, I. Hosako, “Generation of CW Terahertz Waves in the 3 THz Range Using a MZM-Based Flat Comb Generator,” Conference on Laser and Electro Optics (CLEO2014), San Jose, USA, SF2F.1, June 2014.

162. A. Chiba, T. Kawanishi, T. Sakamoto, K. Higuma, K. Takada, and M.Izutsu, “Adjustment of optical path-length difference of nested Mach-Zehnder structure utilizing optical phase shift in waveguide junction,” Conference on Laser and Electro Optics (CLEO2014), San Jose, USA, JTu4A.82, June 2014.

163. G.-W. Lu, A. Albuquerque, B.J. Puttnam, T. Sakamoto, M. Drummond, R. Nogueira, A. Kanno, S. Shinada, N. Wada, T. Kawanishi, “Pump-Linewidth-Tolerant Wavelength Conversion with Coherent Pumps,” Conference on Laser and Electro Optics (CLEO2014), San Jose, USA, SW3J.1, June 2014.

164. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Experimental Investigation of Sampling Phase Sensitivity in Baud-Rate Sampled Coherent Receiver for Nyquist Pulse-Shaped High-Order QAM Signals,” Conference on Laser and Electro Optics (CLEO2014), San Jose, USA, SW1J.2, June 2014.

165. T. Kuri, T. Sakamoto, G.-W. Lu, T. Kawanishi, “Error-Free and Laser-Phase-Noise-Insensitive Optical Coherent Transmission of Uplink Radio-over-Fiber signal,” the 2014 Optical Fiber Communication Conference (OFC2014), M3D.8., San Francisco, USA, Mar. 2014.
166. T. Kuri, T. Sakamoto, G.-W. Lu, T. Kawanishi, “Phase-Noise-Insensitive Optical Coherent Detection with Two-Tone Local Light and Digital Signal Processing Technique for Uplink Radio-over-Fiber Signal Transmission,” 2013 IEEE International Topical Meeting on Microwave Photonics (MWP 2013), Alexandria, USA, Th3-4, Oct. 2013.
167. I. Morohashi, Y. Irimajiri, M. Kumagai, T. Sakamoto, N. Sekine, T. Kawanishi, M. Yasui, and I. Hosako, “Evaluation of Frequency Stability of Terahertz Waves Generated by Mach-Zehnder-Modulator-Based Flat Comb Generator,” 2013 IEEE International Topical Meeting on Microwave Photonics (MWP 2013), Alexandria, USA, W4-22, Oct. 2013.
168. T. Kuri, T. Sakamoto, G.-W. Lu, T. Kawanishi, “Digital-signal-processing-assisted optical coherent detection of uplink radio-over-fiber signal and its phase noise cancellation effect,” 2013 IEEE Photonics Conference (IPC2013), Bellevue Washington USA, TuC2.3, Sep. 2013.
169. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Experimental Demonstration of Wavelength Conversions of Optical 36QAM and 64QAM through FWM in HNLF,” 2013 IEEE Photonics Conference (IPC2013), Bellevue Washington USA, ThG1.4, Sep. 2013.
170. I. Morohashi, Y. Irimajiri, T. Sakamoto, N. Sekine, T. Kawanishi, M. Yasui, and I. Hosako, “Demonstration of THz wave generation up to 700 GHz using Mach-Zehnder-modulator-based flat comb generator,” The 38th International Conference on Infrared, Millimeter and Terahertz Waves, Mainz, Germany, We13-5, Sep. 2013.
171. G.-W. Lu, T. Sakamoto, and T. Kawanishi, “Wavelength Conversion of Optical 64QAM and its Performance Optimization by Constellation Monitoring”, 39th European Conference on Optical Communication (ECOC2013), London, UK, We.2.A.4, Sep. 2013.
172. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Generation of Optical 32QAM using Two Tandem IQ Modulators with Simplified Electronics,” Conference on Laser and Electro Optics (CLEO2013), San Jose, USA, CM1G.1, June 2013.
173. I. Morohashi, T. Sakamoto, K. Hara, M. Oikawa, T. Kawanishi, I. Hosako, “Generation of ultrashort pulse with high peak power using Mach-Zehnder-modulator-based flat comb generator and chirped pulse amplification,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2013), CJ-P.40., Munich, Germany, May 2013.
174. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Optical 36QAM Transmitter based on Two Tandem IQ Modulators with simplified Driving Electronics,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2013), CI-1.3., Munich, Germany, May 2013.
175. I. Morohashi, T. Sakamoto, K. Hara, M. Oikawa, T. Kawanishi, and I. Hosako, “Generation of ultrashort pulse with high peak power using Mach-Zehnder-modulator-based flat comb generator and chirped pulse amplification,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2013), CJ-P.40., Munich, Germany, May 2013.
176. G.-W. Lu, T. Sakamoto, T. Kawanishi, “Optical 64QAM Transmitter Using Tandem IQ Tandem Modulators with Balanced Complexity in Electronics and Optics,” the 2013 Optical Fiber Communication Conference (OFC2013), JTh2A.47., Anaheim, USA, Mar. 2013.
177. I. Morohashi, Y. Irimajiri, T. Sakamoto, T. Kawanishi, and I. Hosako, “Generation of Millimeter Wave with High Frequency Accuracy Using Mach-Zehnder-Modulator-Based Flat Comb Generator” The 2012 IEEE International Topical Meeting on Microwave Photonics (MWP 2012), 3.2, Noodwijik, Netherlands, Sep. 2012
178. G.W. Lu, T. Sakamoto, A. Chiba, T. Kawanishi, “Experiment Investigation of Nonlinear Distortion in QAM Constellation due to Imbalance in Intradyne Coherent Receiver,” The 16th OptoElectronics and Communications Conference (OECC2012), P-1-17, Busan, Korea, Jul. 2012.
179. I. Morohashi, T. Sakamoto, T. Kawanishi, and I. Hosako, “Chirp Characteristics of Optical Combs in MZM-based Flat Comb Generator with Optical Feedback Loop,” The 16th OptoElectronics and Communications Conference (OECC2012), 6D2-5, Busan, Korea, Jul. 2012.
180. I. Morohashi, T. Sakamoto, T. Kawanishi, I. Hosako, Y. Tamura, M. Oikawa, and S. Aoki, “Ultrashort optical pulse system using MZM-based comb generator and fine tuning system”, 3rd EOS Topical Meeting on Terahertz Science & Technology (TST 2012), Prague, Czech Republic, TST201, 2012.
181. I. Morohashi, T. Sakamoto, T. Kawanishi, and I. Hosako, “Generation of Multi-frequency millimeter-wave using MZM-based flat comb generator”, 3rd EOS Topical Meeting on Terahertz Science & Technology (TST 2012), Prague, Czech Republic, TST201, 2012.
182. I. Morohashi, T. Sakamoto, N. Yamamoto, Y. Ogawa, T. Kawanishi, and I. Hosako, “Investigation of Linewidth of Comb Modes in MZM-Based Flat Comb Generator with Optical Feedback Loop”, Conference on Laser and Electro Optics (CLEO2012), San Jose, USA, CTh2A.53, 2012.
183. I. Morohashi, M. Oikawa, Y. Tamura, S. Aoki, , T. Sakamoto, T. Kawanishi, and I. Hosako, “High Peak Power Pulse Generation Using Mach-Zehnder-Modulator-Based Flat Comb Generator Combined with Chirped Pulse Amplifier”, Conference on Laser and Electro Optics (CLEO2012), San Jose, USA, CF1N.7, 2012.
184. N.K. Fontaine, T. Sakamoto, D.J. Geisler, R.P. Scott, B. Guan and S. J. B. Yoo, “Coherent reception of 80 GBd QPSK using integrated spectral slice optical arbitrary waveform measurement (invited)”, Conference on Laser and Electro Optics (CLEO2012), San Jose, USA, CTh1H.1, 2012.
185. I. Morohashi, Y. Irimajiri, T. Sakamoto, T. Kawanishi, and I. Hosako, “Millimeter Wave Generation with Fine Frequency Tuning Using MZM-Based Flat Comb Generator” Asia-Pacific Microwave Photonics Conference (APMP), Kyoto, Japan, PB-3, 2012.
186. A. Kanno, K. Inagaki, I. Morohashi, T. Sakamoto, T. Kuri, I. Hosako, T. Kawanishi, Y. Yoshida, and K. Kitayama, “40 Gb/s W-Band (75-110 GHz) 16-QAM Radio-Over-Fiber Signal Generation and Its Wireless Transmission”, 37th European Conference on Optical Communication (ECOC2011), Geneva, Switzerland, We.10.P1.112, 2011.
187. I. Morohashi, T. Sakamoto, H. Sotobayashi, T. Kawanishi, and I. Hosako, “Generation of 110 fs-width optical pulse using MZM-Based Flat Comb Generator and DF-DDF”, 16th OptoElectronics and Communications Conference (OECC 2011), Kaohsiung, Taiwan, 5D4-3, Jul. 2011.
188. G.W. Lu, T. Sakamoto, and T. Kawanishi, “Generation of Optical 8PSK using Cascaded IQ Modulators and Binary Electronics”, 16th OptoElectronics and Communications Conference (OECC 2011), Kaohsiung, Taiwan, 7B4-5, Jul. 2011.
189. Lu, G.; Sakamoto, T. & Kawanishi, T. (2011), 'Two Optical-8PSK Transmitter Schemes Based on Tandem IQ Modulators', Conference on Laser and Electro Optics pacific (CLEO2011), Sydney, Australia, 3640-CT-4, 2011.
190. I. Morohashi, T. Sakamoto, T. Kawanishi, and I. Hosako, “Creation of Multi-Carrier Millimeter-Wave Signal Using Mach-Zehnder-Modulator-Based Flat Comb Generator”, Conference on Laser and Electro Optics-European Quantum Electronics Conference (CLEO/Europe-EQEC 2011), Munich, Germany, CI.P.9, 2011.
191. A. Kanno, T. Sakamoto, and T. Kawanishi, “Highly stabilized frequency-locked optical frequency comb signal generation using amplified optical fiber loop with SSB-SC modulation”, Conference on Laser and Electro Optics (CLEO2011), Baltimore, USA, JWA85, 2011.
192. I. Morohashi, T. Sakamoto, T. Kawanishi, and I. Hosako, I, “Millimeter-Wave-Band Pulse Formation Using Mach- Zehnder-Modulator-Based Flat Comb Generator”, Conference on Laser and Electro Optics (CLEO2011), Baltimore, USA, JThB111, 2011.
193. G. Lu, T. Sakamoto, and T. Kawanishi, “Optical 8PSK Transmitter using Tandem IQ Modulators with Binary Driving Electrical Signals”, Conference on Laser and Electro Optics (CLEO2011), Baltimore, USA, CThH5, 2011.
194. I. Morohashi, T. Sakamoto, N. Yamamoto, H. Sotobayashi, T. Kawanishi, and I. Hosako, “1 THz-Bandwidth Optical Comb Generation Using Mach-Zehnder-Modulator-Based Flat Comb Generator with Optical Feedback Loop,” the 2011 Optical Fiber Communication Conference (OFC2011), JThA6, San Diego, USA, Mar. 2011.
195. I. Morohashi, T. Sakamoto, N. Yamamoto, T. Kawanishi, and I. Hosako, H. Sotobayashi, “Broadening of comb bandwidth by multiple modulation using feedback loop in Mach-Zehnder-modulator-based flat comb generator,” the 2011 Optical Fiber Communication Conference (OFC2011), JThA6, San Diego, USA, Mar. 2011.
196. I. Morohashi, T. Sakamoto, H. Sotobayashi, T. Kawanishi, and I. Hosako, “Broadband Optical Comb Generation using Mach-Zehnder-Modulator-Based Flat Comb Generator with Feedback Loop,” 2010 IEEE International Topical Meeting on Microwave Photonics (MWP 2010), Montreal, Canada, TH3-6, Oct. 2010.
197. T. Kawanishi, T. Sakamoto, and M. Izutsu, “Multi-channel RoF Signal Generation Using a Reciprocating Optical Modulator,” 2010 IEEE International Topical Meeting on Microwave Photonics (MWP 2010), Montreal, Canada, TH4-3, Oct. 2010.
198. A. Kanno, T. Sakamoto, A. Chiba, T. Kawanishi, M. Sudoh, K. Higuma, and J. Ichikawa, “95-Gb/s NRZ-DPSK Modulation with Full-ETDM Technique,” 36th European Conference on Optical Communication (ECOC2010), Mo.2.F.5, Turin, Italy, Sep. 2010.
199. G.W. Lu, T. Sakamoto, A. Chiba, T. Kawanishi, T. Miyazaki, K. Higuma, and J. Ichikawa, “16-QAM Transmitter using Monolithically Integrated Quad Mach-Zehnder IQ Modulator,” 36th European Conference on Optical Communication (ECOC2010), Mo.1.F.3, Turin, Italy, Sep. 2010.
200. I. Morohashi, M. Sudo, T. Sakamoto, A. Kanno, A. Chiba, J. Ichikawa, and T. Kawanishi, and I. Hosako, “16 Quadrature Amplitude Modulation Using Polarization-Multiplexing QPSK Modulator,” The 15th OptoElectronics and Communications Conference (OECC2010), 8B1-3, Sapporo, Japan, Jul. 2010.
201. A. Kanno, T. Sakamoto, A. Chiba, T. Kawanishi, M. Sudou, K. Higuma, and J. Ichikawa, “360-Gb/s NRZ-DP-DQPSK Modulation with Full-ETDM Technique,” The 15th OptoElectronics and Communications Conference (OECC2010), 8B2-2, Sapporo, Japan, Jul. 2010.
202. M. Sudou, T. Sakamoto, I. Morohashi, A. Kanno, A. Chiba, T. Kawanishi, and J. Ichikawa, “40Gb/s DP- NRZ-QPSK Signal Generation Using a Dual-Polarization Quad-Parallel Mach-Zehnder Modulator,” The 15th OptoElectronics and Communications Conference (OECC2010), 8B2-3, Sapporo, Japan, Jul. 2010.
203. G.W. Lu, T. Sakamoto, A. Chiba, T. Kawanishi, T. Miyazaki, K. Higuma, and J. Ichikawa, “Monolithically Integrated Quad Mach-Zehnder IQ Modulator for Optical 16-QAM Generation,” Conference on Laser and Electro Optics (CLEO/IQEC2010), (postdeadline paper), in San Jose, USA,, May 2010.
204. A. Kanno, T. Sakamoto, A. Chiba, T. Kawanishi, K. Higuma, M. Sudo, and J. Ichikawa, “160-Gb/s Optical DQPSK Signal Generation Using a Thin-LiNbO3-Substrate Modulator with a Ridge-Type Optical Waveguide Structure”, Conference on Laser and Electro Optics (CLEO/IQEC2010) in San Jose, USA, CFL7, May 2010.
205. A. Chiba, T. Sakamoto, T. Kawanishi, K. Higuma, M. Sudo, and J. Ichikawa, “16-Level Optical Quadrature Amplitude Modulation Using Monolithic Quad-Parallel Mach-Zehnder Optical Modulator and Signal Transmission over 75-km Single-Mode Fiber”, Conference on Laser and Electro Optics (CLEO/IQEC2010) in San Jose, USA, CThC1.pdf, May 2010.
206. I. Morohashi, T. Sakamoto, H. Sotobayashi, T. Kawanishi, and I. Hosako, “Timing Jitter Characteristics of Ultrashort Optical Pulse Generator Using Mach-Zehnder-Modulator-Based Flat Comb Generator”, Conference on Laser and Electro Optics (CLEO/IQEC2010) in San Jose, USA, JTuD46, May 2010.
207. T. Kawanishi, T. Sakamoto, A. Chiba, and H. Toda, "High-speed and precise lightwave modulation for high-speed transmission systems (invited)," Progress In Electromagnetics Research Symposium (PIERS 2010). [invited]
208. G.W. Lu, T. Sakamoto, A. Chiba, T. Kawanishi, T. Miyazaki, K. Higuma, and J. Ichikawa, “80-Gb/s Optical MSK Generation Using a Monolithically Integrated Quad-Mach-Zehnder Modulator,” the 2010 Optical Fiber Communication Conference (OFC2010), OWN5, San Diego, USA, Feb. 2010.
209. I. Morohashi, T. Sakamoto, H. Sotobayashi, T. Kawanishi, and I. Hosako, “Observation of Narrow Linewidth Beat Signal for Millimeter Wave Generation Using MZM-based Flat Comb Generator,” the 2010 Optical Fiber Communication Conference (OFC2010), JWA13, San Diego, USA, Feb. 2010.
210. A. Kanno, T. Sakamoto, A. Chiba, H. T. Kawanishi, K. Higuma, M. Sudou, and J. Ichikawa, “166 Gb/s PDM-NRZ-DPSK Modulation Using Thin-LiNbO3-Substrate Modulator,” the 2010 Optical Fiber Communication Conference (OFC2010), JWA40, San Diego, USA, Feb. 2010.
211. G.W. Lu, T. Sakamoto, A. Chiba, T. Kawanishi, T. Miyazaki, K. Higuma, and J. Ichikawa, “Optical MSK Transmitter using a Monolithically Integrated Quad Mach-Zehnder IQ Modulator”, 35th European Conference and Exhibition on Optical Communication (ECOC 2009), Vienna, Austria, 5.2.1, 2009.
212. A. Kanno, T. Sakamoto, A. Chiba, T. Kawanishi, K. Higuma, M. Sudo, and J. Ichikawa, “High-speed DBPSK signal generation by low-Vpi modulator using thin LiNbO3 substrate”, 35th European Conference and Exhibition on Optical Communication (ECOC 2009), Vienna, Austria, P.2.09, 2009.
213. G.W. Lu, T. Sakamoto, A. Chiba, T. Kawanishi, T. Miyazaki, K. Higuma, and J. Ichikawa, “Generation of Optical MSK using a Monolithically Integrated Quad Mach-Zehnder IQ Modulator,” 14th OptoElectronics and Communications Conference (OECC/IOOC 2009), Hong Kong, ThQ3, 2009.
214. T. Kawanishi, T. Sakamoto, A. Chiba, H. Toda, H. Murata, and A. Enokihara, “Pure Intensity Modulated Frequency Doubled Optical Clock Signal Generation by Using Low-Chirp and High Extinction-Ratio Optical Modulation,” 14th OptoElectronics and Communications Conference (OECC/IOOC 2009), Hong Kong, TuG4, Jul. 2009.
215. T. Kawanishi, T. Sakamoto, and A. Chiba, “High-Speed and Precise Lightwave Modulation Technologies,” 14th OptoElectronics and Communications Conference (OECC/IOOC 2009), Hong Kong, ThQ1, Jul. 2009. [invited]
216. A. Chiba, T. Sakamoto, and T. Kawanishi, “Effect of histogram resolution on demodulation of optical quadrature amplitude modulation signal by adaptive threshold adjustment”, the European Conference on Lasers and Electro-Optics and the XI European Quantum Electronics Conference (CLEO/Europe-EQEC), in Munich, Germany, Cl1.5, June 2009.
217. I. Morohashi, T. Sakamoto, H. Sotobayshi, T. Kawanishi, and I. Hosako, “10 GHz-spaced, 20 THz-Wide Comb Generation from CW Light using Mach-Zehnder Modulator Based Comb Generator and Dispersion-Flattened Dispersion-Decreasing Fiber”, the European Conference on Lasers and Electro-Optics and the XI European Quantum Electronics Conference (CLEO/Europe-EQEC), in Munich, Germany, Cl4.4, June 2009.
218. G. Qin, T. Sakamoto, N. Yamamoto, T. Kawanishi, H. Sotobayashi, T. Suzuki, and Y. Ohishi, “Tunable all-optical pulse compression and stretching via doublet Brillouin gain lines in an optical fiber”, the European Conference on Lasers and Electro-Optics and the XI European Quantum Electronics Conference (CLEO/Europe-EQEC), in Munich, Germany, CD.P.1, June 2009.
219. A. Chiba, T. Sakamoto, T. Kawanishi, K. Higuma, and M. Izutsu, “Frequency Swapping Using an Optical Switch with Embedded Mach-Zehnder Structures for Wavelength-Converted Optical Signal Routing Without Lightsources”, Conference on Laser and Electro Optics (CLEO/IQEC2009) in Baltimore, USA, CMJJ5, May 2009.
220. H. Murata, H.V. Pharm, Y. Okamura, T. Sakamoto, and T. Kawanishi, “Single-Drive Electro-Optic Modulator for Duo-Binary Modulation Utilizing Non-periodically Polarization-Reversed Structure”, Conference on Laser and Electro Optics (CLEO/IQEC2009) in Baltimore, USA, JWA35, May 2009.
221. I. Morohashi, T. Sakamoto, H. Sotobayashi, T. Kawanishi, and I. Hosako, “Observation of 100 GHz Beat Signal for millimeter-Wave Generation using Mach-Zehnder-Modulator-Based Flat Comb Generator”, Conference on Laser and Electro Optics (CLEO/IQEC2009) in Baltimore, USA, JWA75, May 2009.
222. H. Murata, H.V. Pharm, T. Inoue, Y. Okamura, T. Sakamoto, and T. Kawanishi, “Optical Frequency-Shift-Keying Modulator Using Three-Branch-Waveguide Interferometer and Polarization-Reversed Structure,” Asia-Pasific Microwave Photonics Conference (APMP 2009), Beijing, China, A03, Apr. 2009.
223. A. Chiba, T. Sakamoto, T. Kawanishi, K. Higuma, and M. Izutsu, “Analysis of Crosstalk Impact on Optical Packet Signals in an Optical Cross-Bar Switch by Intensity-Trimming Method,” the 2009 Optical Fiber Communication Conference (OFC2009), JWA19, San Diego, USA, Mar. 2009.
224. A. Chiba, T. Kawanishi, T. Sakamoto, K. Higuma, and M. Izutsu, “Guard-Time-Free Port Selection by a LiNbO3 Optical Switch Embedded Intensity Trimmers for Optical Packet Switching,” the 2009 Optical Fiber Communication Conference (OFC2009), JThA35, San Diego, USA, Mar. 2009.
225. T. Kawanishi, T. Sakamoto, A. Chiba, D. Nanbu, H. Toda, H. Murata, and A. Enokihara, "High-speed and precise lightwave modulation for millimeter- or micro-wave generation (invited)," Progress In Electromagnetics Research Symposium (PIERS 2009), 1P1-4, Beijing (Mar. 2009). [invited]
226. N.K. Fontaine, R.P. Scott, S.J. Yoo, and T. Sakamoto, “Characterization of Dual-Electrode Mach-Zehnder Modulator Based Optical Frequency Comb Generator in Two Regimes,” The 21st Annual meeting of The IEEE Lasers & Electro-Optics Society (LEOS 2007), TuF2, Newport Beach, USA, Nov. 2008.
227. H. Toda, J. Miyashita, A. Chiba, T. Sakamoto, T. Kawanishi, M. Tsuchiya and M. Izutsu, "Highly pure two-tone lightwave generation using high extinction-ratio optical intensity modulator and delay interferometer,” The 21st Annual Meeting of the IEEE Lasers & Electro-Optics Society (LEOS 2008), WB2, pp.421-422, Newport Beach, Nov. 2008.
228. I. Morohashi, T. Sakamoto, H. Sotobayshi, T. Kawanishi, I. Hosako, and M. Tsuchiya, “12 GHz Repetition Rate Tunable Ultrashort Pulse Generation using Mach-Zehnder-Modulator-Based Flat Comb Generator and DF-DDF,” 2008 IEEE International Topical Meeting on Microwave Photonics (MWP 2008), Goldcoast, Australia, 9097, Oct. 2008.
229. I. Morohashi, T. Sakamoto, H. Sotobayshi, T. Kawanishi, I. Hosako, and M. Tsuchiya, “Wavelength-tunable ultrashort optical pulse generation using Mach-Zehnder-modulator-based flat comb generator,” 34th European Conference on Optical Communication (ECOC2008), Brussels, Bergium, Th.2.B.3, 2008.
230. H. Kiuchi, T. Kawanishi, M. Yamada, T. Sakamoto, M. Tsuchiya, J. Amagai, and M. Izutsu, ” Photonic Millimeter-wave Generation and Distribution System Applicable to the ALMA Radio Telescopes”, Progress In Electromagnetics Research Symposium Abstracts, Hangzhou, China, Mar., 2008, p. 231.
231. I. Morohashi, T. Sakamoto, H. Sotobayshi, I. Hosako, T. Kawanishi, and M. Tsuchiya, “10 GHz 200 fs pulse generation from Mach-Zehnder-modulator- based optical frequency comb generator,” the 2008 Optical Fiber Communication Conference (OFC2008), San Diego, USA, OWD2, 28 Feb. 2008.
232. T. Kawanishi, T. Sakamoto, A. Chiba, M. Izutsu, K. Higuma, J. Ichikawa, T. Lee, V. Filsinger, “High-Speed Dual-Parallel Mach-Zehnder Modulator Using Thin Lithium Niobate Substrate,” the 2008 Optical Fiber Communication Conference (OFC2008), San Diego, USA, JThA34, 28 Feb. 2008.
233. T. Kawanishi, T. Sakamoto, A. Chiba, M. Izutsu, P.J. Winzer, “Duobinary Signal Generation Using High-Extinction Ratio Modulation,” the 2008 Optical Fiber Communication Conference (OFC2008), San Diego, USA, OWL2, 28 Feb. 2008.
234. A. Chiba, T. Sakamoto, and T. Kawanishi, “Adaptive Symbol Discrimination Method for Distorted Multilevel Optical Signal and Its Application to Decoding of High-Speed Optical Quadrature Amplitude Modulation,” the 2008 Optical Fiber Communication Conference (OFC2008), San Diego, USA, JWA63, 28 Feb. 2008.

235. H. Kiuchi, T. Kawanishi, M. Yamada, T. Sakamoto, M. Tsuchiya, “Photonic Millimeter-Wave Generation –Development for the ALMA Radio Telescope,” LEOS Annual meeting 2007, Lake Buena Vista, Florida, USA, ThF4, Oct. 2007.

236. T. Yamamoto, R. Kohno, A. Chiba, T. Sakamoto, and T. Kawanishi, “Ultra Wideband Light Source Using 136-Wavelengths SSB Frequency Sweep Technique for Optical Coherence Tomography,” 2007 IEEE International Topical Meeting on Microwave Photonics (MWP 2007), , Victoria, Canada, Th.4.28., Oct. 2007.
237. T. Kawanishi, T. Sakamoto, A. Chiba, and M. Izutsu, “Study of precise optical modulation using Mach-Zehnder interferometers for advanced modulation formats”, 33th European Conference on Optical Communication (ECOC2007), Berlin, Germany, 6.2.3, 2007.
238. T. Yamamoto, R. Kohno, A. Chiba, T. Sakamoto, and T. Kawanishi, “Agile Wideband Light Source for Optical Coherence Tomography Using Optical SSB Frequency Sweep Technique,” LEOS summer topical2007, Portland, USA, WB2.4, Jul. 2007.
239. A. Chiba, T. Kawanishi, T. Sakamoto, K. Higuma, and M. Izutsu, “High-extinction-ratio (> 55 dB) port selection by using a high-speed LiNbO3 optical switch with intensity trimmers,” IEEE LEOS Photonics in Switching 2007, San Francisco, USA, TuB1.4, Jul. 2007.
240. Mitsuko Mieno, Fumi Moritsuka, Yuki Komai, Shimako Anzai, Kashiko Kodate, Naoya Wada, Takahide Sakamoto, Tetsuya Kawanishi, and Masayuki Izutsu, “Optical Code Label Processing Using Multi-Port Optical Spectrum Synthesizer and Frequency Comb Generator,” 12th OptoElectronics and Communications Conference (OECC/IOOC 2007), Yokohama, Japan, 13D3-7, Jul. 2007.
241. A. Chiba, T. Sakamoto, T. Kawanishi, and M. Izutsu, “Demonstration of optical quadrature amplitude modulation by using a high-speed optical DQPSK modulator and precise voltage-control technique,” 12th OptoElectronics and Communications Conference (OECC/IOOC 2007), Yokohama, Japan, 12B3-4, Jul. 2007.
242. T. Kawanishi, T. Sakamoto, A. Chiba, and M. Izutsu, “Ultra fast optical frequency sweep with an integrated lithium niobate modulator,” 12th OptoElectronics and Communications Conference (OECC/IOOC 2007), Yokohama, Japan, 13D3-6, Jul. 2007.
243. T. Kawanishi, A. Chiba, T. Sakamoto, and M. Izutsu, “Advanced LiNbO3 modulation,” Conference on Laser and Electro Optics (CLEO/IQEC2007) in Baltimore, USA, CMH1, May 2007. [invited]
244. P.J. Winzer, G. Raybon, S. Chandrasekhar, C.R. Doerr, T. Kawanishi, T. Sakamoto, K. Higuma, “10x107-Gb/s NRZ-DQPSK Transmission at 1.0 b/s/Hz over 12x100 km Including 6 Optical Routing Nodes,” the 2007 Optical Fiber Communication Conference (OFC2007), PDP24, Anaheim, USA, 29 Mar. 2007. (post deadline paper)
245. A.H. Gnauck, G. Chalet, P. Tran, P. Winzer, C.R. Doerr, J.C. Centanni, E.C. Burrows, T. Kawanishi, T. Sakamoto, K. Higuma, “25.6-Tb/s C+L-Band Transmission of Polarization-Multiplexed RZ-DQPSK Signals,” the 2007 Optical Fiber Communication Conference (OFC2007), PDP19, Anaheim, USA, 29 Mar. 2007. (post deadline paper)
246. Alan H. Gnauck, C. Doerr, P. Winzer, S. Cabot, M. Cappuzzo, E. Chen, A. Wong-Foy, L. Gomez, M. Santo, T, Kawanishi and T. Sakamoto, “Optical Equalization of 42.7-Gbaud Band-Limited NRZ-DQPSK Signals for High-Spectral-Efficiency Transmission,” the 2007 Optical Fiber Communication Conference (OFC2007), OThN4, Anaheim, USA, 29 Mar. 2007.
247. T. Kawanishi, T. Sakamoto, T. Miyazaki, M. Izutsu, K. Higuma, and J. Ichikawa, “80-Gb/s DQPSK Modulator,” the 2007 Optical Fiber Communication Conference (OFC2007), OWH5, Anaheim, USA, 28 Mar. 2007.
248. T. Yamamoto, R. kohno, A. chiba, , T. Sakamoto, and T. Kawanishi, “Ultra Wideband Light Source for Optical Coherence Tomography Using Optical SSB Frequency Sweep Technique,” Tenth International Symposium on Contemporary Photonics Technology (CPT 2007), G-25, Jan. 2007.
249. F. Moritsuka, N. Wada, T. Sakamoto, T. Kawanishi, Y. Komai, S. Anzai, K. Kodate, and M. Izutsu, “Multi-Port Optical Spectrum Synthesizer and Multi-Wavelength Frequency Comb Generator for Multiple Optical Code-Label Processing,” Tenth International Symposium on Contemporary Photonics Technology (CPT 2007), F-4, Jan. 2007.
250. T. Kawanishi, T. Sakamoto, M Tsuchiya and M. Izutsu, “160GHz two-tone lightwave generation using high extinction-ratio optical modulation,” LEOS 2006, TuE2, Montreal, Canada, 29 Oct.-2 Nov. 2006.
251. A. Chiba, T. Kawanishi, T. Sakamoto, K. Higuma and M. Izutsu, “Low-crosstalk LiNbO3 optical switch with embedded sub Mach-Zehnder structures,” LEOS 2006, Th4, Montreal, Canada, 29 Oct.- 2 Nov. 2006.
252. T. Kawanishi, T. Sakamoto and M. Izutsu, “Ultra-wideband frequency chirp signal generation by using high-speed optical frequency control with optical single-sideband modulation technique,” MWP 2006, P14, Grenoble, France, 5 Oct. 2006.

253. A. H. Gnauck, P.J. Winzer, L.L. Buhl, T. Kawanishi, T. Sakamoto, M. Izutsu and K. Higuma, “12.3-Tb/s C-Band DQPSK Transmission at 3.2 b/s/Hz Spectral Efficiency,” 32th European Conference on Optical Communication (ECOC 2006), Th4.1.2, Cannes, France, 28 Sep. 2006 (post deadline paper)

254. P.J. Winzer, G. Raybon, G.R. Doerr, L. L. Buhl, T. Kawanishi, T. Sakamoto, M. Izutsu and K. Higuma, “2000-km WDM Transmission Of 10x107-Gb/S RZ-DQPSK,” 32th European Conference on Optical Communication (ECOC 2006), Th.4.1.3, Cannes, France, 28 Sep. 2006 (post deadline paper)

255. F. Moritsuka, Y. Komai, S. Anzai, K. Kodate, N. Wada, T. Sakamoto, T. Kawanishi, and M. Izutsu, “Large Scale, Multiple, Optical Code-Label Generation and Processing Based on Multi-Port, Tuneable Spectrum Synthesizer and Electro-Optic Frequency Comb Generator,” 32th European Conference on Optical Communication (ECOC2006), Cannes, French, WE2.4.2, 2006.
256. T. Kawanishi, T. Sakamoto, M. Izutsu, D. Fonseca, Portugal, A. Cartaxo, P. Monteiro, “Fine Transmittance/Reflectivity Measurement System Using Single-Sideband Frequency Sweeper with Ultra-Wideband Hilbert Transformer,” 32th European Conference on Optical Communication (ECOC2006), Cannes, French, WE4.4.6, 2006.
257. T. Kawanishi, T. Sakamoto, and M. Izutsu, “470GHz Optical Clock Signal Generation Using Reciprocating Optical Modulation,” 32th European Conference on Optical Communication (ECOC2006), Cannes, French, WE4.6.4, 2006.
258. T. Kawanishi, T. Sakamoto, T. Miyazaki, M. Izutsu, T. Fujita, K. Higuma, S. Mori and J. Ichikawa, “Integrated LiNbO3 modulator for high-speed optical quadrature phase shift keying,” OAA/COTA 2006, Whistler, Canada, 28 June 2006.
259. T. Kawanishi, T. Sakamoto, S. Shinada and M. Izutsu, “Novel Lithium-Niobate Based Optical Devices for Microwave/Millimeter-Wave Photonics (invited),” IMS 2006, San Francisco, USA, 16 June 2006.
260. T. Fujita, K. Higuma, S. Mori, J. Ichikawa, T. Kawanishi, T. Sakamoto and M. Izutsu, “80 Gb/s Optical Quadrature Phase Shift Keying Modulation Using an Integrated LiNbO3 Modulator,” CLEO 2006, CFP4, Long Beach, USA, 21-26 May 2006.
261. T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, S. Oikawa, Y. Shimakura and K. Yoshiara, “320GHz High-Order Sideband Generation Using Reciprocating Optical Modulator,” CLEO 2006, JWB35, Long Beach, USA, 21-26 May 2006.
262. H. Kiuchi, T. Kawanishi, M. Yamada, T. Sakamoto, M. Tsuchiya, J. Amaya and M. Izutsu, “High-extinction Ratio LiNbO3 Intensity Modulator applied to the Radio Interferometry,” Asia-Pasific Microwave Photonics Conference (AP-MWP 2006), C-31, Kobe, Japan, Apr. 2006.
263. T. Fujita, T. Kawanishi, T. Sakamoto, K. Higuma, J. Ichikawa, and M. Izutsu “10 Gbps FSK WDM Modulation Using External FSK Modulator,” Asia-Pasific Microwave Photonics Conference (AP-MWP 2006), C-31, Kobe, Japan, Apr. 2006.
264. Y. Shimakura, K. Yoahiara, T. Sakamoto, S. Shinada, and T. Kawanishi, “Reciprocating Optical Modulator for 60GHz-band ROF Transmitter,” Asia-Pasific Microwave Photonics Conference (AP-MWP 2006), J-2, Kobe, Japan, Apr. 2006.
265. M. Daikoku, I. Morita, H. Taga, H. Tanaka, T. Kawanishi, T. Sakamoto, T. Miyazaki, and T. Fujita, “100 Gbit/s DQPSK Transmission Experiment without OTDM for 100G Ethernet Transport,” the 2006 Optical Fiber Communication Conference (OFC 2006), PDP36, Anahaim, USA, Mar. 2006. (post deadline paper)
266. T. Kawanishi, S. Shinada, T. Sakamoto, M. Izutsu, S. Oikawa, Y. Shimakura and K. Yoshiara, “160 GHz reciprocating optical modulator using uniform fiber Bragg gratings,” the 2006 Optical Fiber Communication Conference (OFC 2006), OTuL1, Anahaim, USA, Mar. 2006.
267. T. Kawanishi, T. Sakamoto, M. Tsuchiya, M. Izutsu, S. Mori, and K. Higuma, “70dB extinction-ratio LiNbO3 optical intensity modulator for two-tone lightwave generation,” the 2006 Optical Fiber Communication Conference (OFC 2006), OWC4, Anahaim, USA, Mar. 2006.
268. T. Kawanishi, H. Kiuchi, M. Yamada, T. Sakamoto, M. Tsuchiya and M. Izutsu, “Quadruple Frequency Double Sideband Carrier Suppressed Modulation Using High Extinction Ratio Optical Modulators for Photonic Local Oscillators,” International Topical Meeting on Microwave Photonics (MWP 2005), PDP-03, Seoul, South Korea, 12-14 Oct. 2005.
269. T. Kawanishi, T. Sakamoto, M. Tsuchiya and M. Izutsu, “High Carrier Suppression Double Sideband Modulation Using an Integrated LiNbO3 Optical Modulator,” International Topical Meeting on Microwave Photonics (MWP 2005), W1.3, Seoul, South Korea, 12-14 Oct. 2005.
270. T. Fujita, T. Kawanishi T. Sakamoto, S. Oikawa, S. Mori, K. Higuma, J. Ichikawa, and M. Izutsu, “OOK/FSK WDM System Using External Optical FSK Modulation,” 31th European Conference on Optical Communication (ECOC 2005), Th1.2.5, Glasgow, Scotland, Sep. 2005.
271. T. Kawanishi, T. Sakamoto, and M. Izutsu, “Optical Frequency Sweep Technique Using Single Sideband Modulation,” 31th European Conference on Optical Communication (ECOC 2005), We4.P.62, Glasgow, Scotland, Sep. 2005.
272. T. Kawanishi, T. Sakamoto, M. Tsuchiya, and M. Izutsu, “High Extinction Ratio Optical Modulator using Active Intensity Trimmers,” 31th European Conference on Optical Communication (ECOC 2005), Th1.6.6, Glasgow, Scotland, Sep. 2005.
273. T. Kawanishi, K. Higuma, T. Fujita, S. Mori, S. Oikawa, J. Ichikawa, T. Sakamoto, M. Tsuchiya, and M. Izutsu, “40Gbit/s Versatile LiNbO₃ Lightwave Modulator,” 31th European Conference on Optical Communication (ECOC 2005), Th1.2.6, Glasgow, Scotland, Sep. 2005.
274. L.T. Keung, R.L. Romeu, T T. Sakamoto, K. Sasagawa, T. Kawanishi, D. Van Thourhout, P. Dumon, R. Baets, H.K. Tsang, and M. Tsuchiya, “50 Gbps Wavelength Conversion by Cross-Absorption Modulation in Silicon Wire Waveguides,” The International Conference on Quantum Electronics 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005 (IQEC/CLEO-PR 2005), PDP-11, Jul. 2005.
275. T. Kawanishi, T. Sakamoto, and M. Izutsu, “Modulation Format Conversion from Chirped-FSK to PSK Using Double-Sideband Suppressed-Carrier Optical Modulation,” The 10th OptoElectronics and Communications Conference (OECC2005), 7B2-5, Jul. 2005.
276. T. Kawanishi, T. Sakamoto, and M. Izutsu, “All-Optical Modulation Format Conversion from Frequency-Shift-Keying to Phase-Shift-Keying by Using Optical Double-Sideband Modulation Technique,” Conference on Laser and Electro Optics (CLEO/IQEC2005), CWO1, May 2005.
277. S. Shinada, T. Kawanishi, K. Nishikawa, T. Sakamoto and M. Izutsu, “The characteristics of a resonant type LiNbO3 modulator with a patch capacitance and arrayed modulators,” the 6th Korea-Japan Joint Workshop on Microwave & Millimeter-wave Photonics (KJMWP2005), Gyeongju, Korea, 27-28, Jan. 2005.
278. S. Shinada, T. Kawanishi, T. Sakamoto and M. Izutsu, “A Resonant Type LiNbO3 Optical Modulator with a Patch Capacitance,” CPT 2005, P-12, Tokyo, Japan, 12-14 Jan. 2005.
279. T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita and J. Ichikawa, “10 Gbit/s FSK Transmission over 130 km SMF Using Group Delay Compensated Balance Detection,” the 2005 Optical Fiber Communication Conference (OFC 2005), OTuL1, Anahaim, USA, 6-11 Mar. 2005.
280. T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, S. Oikawa and K. Yoshiara, “Reciprocating Optical Modulator Using a Resonant Modulating Electrode for Generation of High-Order Double Sideband Components,” the 2005 Optical Fiber Communication Conference (OFC 2005), OThB4, Anahaim, USA, 6-11 Mar. 2005.
281. T. Kawanishi, S. Shinada, T. Sakamoto and M. Izutsu, “Integrated reciprocating optical modulator for stable photonic millimetre-wave generation,” LEOS 2004, TuI2, Puerto Rico, USA, 7-11 Nov. 2004.
282. T. Kawanishi, S. Oikawa, K. Yoshiara, S. Shinada, T. Sakamoto, and M. Izutsu, “Reciprocating Optical Modulator with Phase-shifted Fibre Bragg Grating for Millimetre-wave generation,” 30th European Conference on Optical Communication (ECOC-IOOC 2004), Mo.4.6.1, 2004
283. T. Kawanishi, T. Sakamoto, and M. Izutsu, “Photonic ultra-wide-band signal generation using optical frequency-shift-keying technique,” International Topical Meeting on Microwave Photonics (MWP 2004), Mo.3.2.3., 2004.
284. T. Kawanishi, K. Higuma, T. Fujita, J. Ichikawa, S. Shinada, T. Sakamoto and M. Izutsu, “10Gbit/s FSK transmission over 95 km SMF using an external optical FSK modulator,” LEOS 2004, WR3, Puerto Rico, USA, 7-11 Nov. 2004.
285. T. Kawanishi, T. Sakamoto, S. Shinada, M. Izutsu, K. Higuma, T. Fujita, and J. Ichikawa, “High-speed optical FSK modulator for optical packet labeling,” the 2004 Optical Fiber Communication Conference (OFC2004) in Los Angeles, California, PDP16, Feb. 2004. (post deadline paper)
286. T. Kawanishi, T. Sakamoto, S. Shinada and M. Izutsu, “Low phase noise photonic millimeter-wave generation by using a reciprocating optical modulator,” the 2004 Optical Fiber Communication Conference in Los Angeles, California, WL8, Feb. 2004.
287. T. Kawanishi, T. Sakamoto and M. Izutsu, “Optical FSK modulator using an integrated lightwave circuit consisting of four optical phase modulators,” Seventh International Symposium on Contemporary Photonics Technology (CPT 2004), P-8, Jan. 2004.
288. S. Shinada, T. Kawanishi, T. Sakamoto and M. Izutsu, “Measurement of induced phase of resonant type LiNbO₃ optical modulators,” Seventh International Symposium on Contemporary Photonics Technology (CPT 2004), P-8, Jan. 2004.
289. T. Kawanishi, S. Oikawa, K. Yoshiara, S. Shinada, T. Sakamoto and M. Izutsu, “Hybrid Reciprocating Optical Modulator for Millimetre-Wave Generation,” 29th European Conference on Optical Communication (ECOC-IOOC 2003), Mo.4.5.6, 2003.
290. K. Kikuchi, K. Taira, T. Sakamoto and T. Tanemura, “All-Optical Signal Processing Using Fiber Nonlinearity”, 29th European Conference on Optical Communication (ECOC-IOOC 2003), Mo.3.7.2, 2003.
291. T. Kawanishi, S. Oikawa, K. Yoshiara, T. Sakamoto, S. Shinada and M. Izutsu, “Millimeter-wave generation and baseband modulation by using reciprocating optical modulation for radio-on-fiber systems in V-band,” International Topical meeting on Microwave Photonics (MWP 2003), Hungarian Academy of Sciences, Budapest, Hungary, 10-23, Sep. 2003.
292. T. Kawanishi, S. Oikawa, K. Yoshiara, T. Sakamoto, S. Shinada and M. Izutsu, “Optical harmonic generation using reciprocating optical modulators,” 9th Microoptics Conference (MOC2003) in Odaiba, Tokyo, C5. Oct. 2003

293. T. Sakamoto, F. Futami, K. Kikuchi, S. Takeda, Y. Sugaya and S. Watanebe “Chirp-Free Wavelength Conversion by using a Nonlinear Optical Loop Mirror Composed of a Highly-Nonlinear Dispersion Shifted Fiber,” Seventh International Symposium on Contemporary Photonics Technology (CPT1999), Sendai, Japan, Jan. 1999.

294. T. Sakamoto, and A. Chiba, “Multiple Frequency-Spaced Flat Optical Comb Generation Using Multiple-Parallel Phase Modulator,” Opt. Lett., vol. 42, no. 21, pp. 4462-4465, Nov. 2017.

295. T. Sakamoto, G.W. Lu, and N. Yamamoto, "Loop-Assisted Coherent Matched Detector for Parallel Time-Frequency Sampling (invited paper)," OSA J. Lightwave Technol., vol. 35, no. 4, pp. 807-814, Jan. 2017.
296. T. Sakamoto, “Orthogonal Time-Frequency Domain Multiplexing with Multilevel Signaling,” OSA Optics Express. vol. 22, no. 1, pp. 773-781, 2014.
297. T. Sakamoto, G.W. Lu, and T. Kawanishi, “Multi-tone parallel coherent matched detection for demultiplexing of superchannels,” OSA Optics Express. vol. 21, no. 16, pp. 18602-18610, 2013.
298. T. Sakamoto, and A. Chiba, “Coherent Synthesis of Optical Multilevel Signals by Electrooptic Digital-to-Analog Conversion Using Multiparallel Modulator (invited paper),” IEEE J. Selected Topics in Quantum Electron. vol. 16, no. 5, pp. 1140-1149, Sep/Oct 2010.
299. T. Sakamoto, T. Kawanishi, and M. Tsuchiya, “10 GHz 2.4 ps pulse generation using single-stage dual-drive Mach-Zehnder Modulator,” Opt. Lett. vol. 32, no. 8, pp. 890-892, Apr. 2008.
300. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Widely Wavelength-Tunable Ultra-Flat Frequency Comb Generation Using Conventional Dual-Drive Mach-Zehnder Modulator,” Electron. Lett. vol. 43, no. 19, p.p. 1039-1040, Sep. 2007.
301. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Optoelectronic Oscillating Millimetre-wave generator Employing Reciprocating Optical Modulator,” Electron. Lett. vol. 43, no. 19, pp. 1031-1033, Sep. 2007.
302. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Asymptotic formalism for ultraflat optical frequency comb generation using a Mach-Zehnder modulator,” Opt. Lett. vol. 32, no. 11, pp.1515-1517, June 2007.
303. T. Sakamoto, T. Kawanishi, and T. Miyazaki, “Continuous-Phase Frequency-Shift Keying with External Modulation,” IEEE J. Selected Topics in Quantum Electron. vol. 12, no. 4, pp. 589-595, Jul. 2006.
304. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Optoelectronic oscillator using a LiNbO₃ phase modulator for self-oscillating frequency comb generation,” Opt. Lett., vol. 31, no. 6 pp. 811-813, Mar. 2006.
305. T. Sakamoto, T. Kawanishi, T. Miyazaki, and M. Izutsu, “10-Gb/s external modulation in optical CPFSK format,” IEEE Photon Technol. Lett. vol. 18, no. 8, pp. 968-970, Apr. 2006.
306. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Pulse-carving technique for suppressing transient state in external wideband FSK modulation,” IEICE Electron. Express, vol. 2, no. 7, pp. 244-248, Apr. 2005.
307. T. Sakamoto, T. Kawanishi, and M. Izutsu, “Optical Minimum-Shift Keying with External Modulation Scheme,” OSA Optics. Express, vol. 13, no. 20, pp. 7741-7747, Oct. 2005.
308. T. Sakamoto, T. Kawanishi, S. Shinada, and M. Izutsu, “Amplitude modulation on millimeter-wave signal with low driving voltage using reciprocating optical modulator,” IEICE Electron. Express, vol. 2, no. 7, pp. 239-243, Apr. 2005.
309. T. Sakamoto, T. Kawanishi, S. Shinada, and M. Izutsu, “Optoelectronic oscillator using LiNbO₃ intensity modulator with resonant electrode,” Electron. Lett. vol. 41, no. 12, pp.716-718, June 2005.
310. T. Sakamoto and K. Kikuchi, “160-Gb/s Operation of Nonlinear Optical Loop-Mirror with an Optical Bias Controller,” IEEE Photon. Technol. Lett., vol. 17, no. 5, pp. 1058-1060, May 2005.
311. T. Sakamoto and K. Kikuchi, “Nonlinear Optical Loop Mirror with an Optical Bias Controller for Achieving Full-Swing Operation of Gate Switching,” IEEE Photon. Technol. Lett., vol. 16, no. 2, pp. 545-547, Feb. 2004.
312. T. Sakamoto K. Seo, K. Taira, N. Moon and K. Kikuchi, “Polarization-insensitive All-optical Time-division Demultiplexing using a Fiber Four-wave Mixer with a Peak-Holding Optical Phase-locked Loop,” IEEE Photon. Technol. Lett., vol. 16, no. 2, pp. 563-565, Feb. 2004.
313. T. Sakamoto, H.C. Lim and K. Kikuchi, “All-Optical Polarization-Insensitive Time-Division Demultiplexer Using a Nonlinear Optical Loop Mirror with a Pair of Short Polarization-Maintaining Fibers,” IEEE Photon. Technol. Lett., vol. 14, no. 12, pp. 1737-1739, Dec. 2002.
314. T. Sakamoto and K. Kikuchi, “Analyses of All-Optically Regenerated Transmission System Using Nonlinear Interferometric Switches”, IEEE Photon. Technol. Lett., vol. 13, no. 9, pp. 1020-1022, Sep. 2001.
315. T. Sakamoto, F. Futami, K. Kikuchi, S. Takeda, Y. Sugaya, and S. Watanabe, “All-Optical Wavelength Conversion of 500-fs Pulse Trains by Using a Nonlinear-Optical Loop Mirror Composed of a Highly Nonlinear DSF,” IEEE Photon. Technol. Lett., vol. 13, no. 5, pp. 502-504, May 2001.
316. G.-W. Lu, R.S. Luís, H. Toda, J. Cui, T. Sakamoto, H. Wang, Y. Ji, N. Yamamoto, “Flexible generation of 28 Gbps PAM4 60 GHz/80 GHz radio over fiber signal by injection locking of direct multilevel modulated laser to spacing-tunable two-tone light,” OSA Optics Express, vol. 26, no. 16, p.p. 20603-20613, Jul. 2018.
317. T. Umezawa, T. Sakamoto, A. Kanno, N. Yamamoto, T. Kawanishi, “High Speed 2-D Photodetector Array for Space and Mode-Division Multiplexing Fiber Communications,” J. Lightwave Technol., vol. 36, no. 17, pp. 3684-3692, June 2018.
318. G.-W. Lu, R.S. Luis, J.M.D. Mendinueta, T. Sakamoto, N. Yamamoto, “Optical subcarrier processing for Nyquist SCM signals via coherent spectrum overlapping in four-wave mixing with coherent multi-tone pump,” OSA Optics Express, vol. 26, no. 2, p.p. 1488-1496, Jan. 2018.

319. S. Owaki, Y. Fukumoto, T. Sakamoto, N. Yamamoto, and M. Nakamura, “Experimental Demonstration of SPM Compensation based on Digital Signal Processing Using a Three-layer Neural-Network for 40-Gbit/s Optical 16QAM Signal,” IEICE Communications Express., vol. 1, pp. 1-6, Oct. 2017.

320. Guo-Wei Lu, Xun Guan, Takahide Sakamoto , Naokatsu Yamamoto, Calvin Chun-Kit Chan, "Simple Self-homodyne Detection Scheme for Optical OFDM with Inserted Pilot Subframes and Application in Optical Access Networks," IEEE Access, vol. 5, no. 1, p.p. 24602-24607, Oct. 2017.

321. I. Morohashi, T. Sakamoto, N. Sekine, A. Kasamatsu, and I. Hosako, “Ultrashort Optical Pulse Source Using Mach-Zehnder-Modulator-Based Flat Comb Generator,” Nano Communication Networks, vol. E96-C, vol. 10, pp.79-84, Dec. 2016.
322. Guo-Wei Lu, Tianwai Bo, Takahide Sakamoto, Naokatsu Yamamoto, and Calvin Chun-Kit Chan, "Flexible and scalable wavelength multicast of coherent optical OFDM with tolerance against pump phase-noise using reconfigurable coherent multi-carrier pumping," OSA Optics Express, vol. 24, p.p. 22573-22580, Oct. 2016.
323. T. Kuri, T. Sakamoto, and T. Kawanishi, "Laser-Phase-Fluctuation-Insensitive Optical Coherent Transmission of 16-Quadrature-Amplitude-Modulation Radio-over-Fiber Signal (Top-Scoring Paper)," OSA J. Lightwave Technol., vol. 34, no. 2, pp. 683-690, Jan. 2016.
324. Guo-Wei Lu, André Albuquerque, Benjamin J. Puttnam, Takahide Sakamoto, Miguel Drummond, Rogério Nogueira, Atsushi Kanno, Satoshi Shinada, Naoya Wada, and Tetsuya Kawanishi, "Pump-phase-noise-free optical wavelength data exchange between QAM signals with 50-GHz channel-spacing using coherent DFB pump," OSA Optics Express, vol. 24, p.p. 3702-3712, Feb. 2016.
325. Guo-Wei Lu, Takahide Sakamoto, and Tetsuya Kawanishi, “Flexible High-order QAM Transmitters for Elastic Optical Networks,” Springer Photonic Network Communications, vol. 31, pp 1-8, Aug. 2015, 10.1007/s11107-015-0548-5.
326. T. Kuri, T. Sakamoto, and T. Kawanishi, "Laser-phase-fluctuation-insensitive offset- frequency-spaced two-tone optical coherent detection scheme and its transmission for radio-over-fiber systems," OSA Optics Express, vol. 23, no. 19, pp. 24140-2415, Sep. 2015.
327. G.W. Lu, J.M.D. Mendinueta, T. Sakamoto, N. Wada, and T. Kawanishi, "Optical 8QAM and 8PSK synthesis by cascading arbitrary 2QAM with squared QPSK," OSA Optics Express, vol. 23, no. 16, pp. 21366-21374, 2015.
328. I. Morohashi, T. Sakamoto, N. Sekine, T. Kawanishi, A. Kasamatsu, I. Hosako, "Generation of Arbitrarily Patterned Pulse Trains in the THz Range by Spectral Synthesis of Optical Combs," IEICE TRANSACTIONS on Electronics, vol. 98-C, no. 8, pp.793-798, Aug. 2015.
329. J. Qin, G.-W. Lu, T. Sakamoto, K. Akahane, N. Yamamoto, D. Wang, C. Wang, H. Wang, M. Zhang, T. Kawanishi, and Y. Ji, “Simultaneous multichannel wavelength multicasting and XOR logic gate multicasting for three DPSK signals based on four-wave mixing in quantum-dot semiconductor optical amplifier,” OSA Optics Express. vol. 22, no. 24, p.p. 29413-29423, Dec. 2014.
330. R. Jin, R. Shimizu, I. Morohashi, K. Wakui, M. Takeoka, S. Izumi, T. Sakamoto, M. Fujiwara, T. Yamashita, S. Miki, H. Terai, Z. Wang, and M. Sasaki, “Efficient generation of twin photons at telecom wavelengths with 2.5 GHz repetition-rate-tunable comb laser,” Scientific Reports, 4, 7468, Dec. 2014.
331. G.W. Lu, T. Sakamoto, and T. Kawanishi, “Wavelength conversion of optical 64QAM through FWM in HNLF and its performance optimization by constellation monitoring,” OSA Optics Express, vol. 22, no. 1, pp. 15-22, Jan. 2014.
332. G.W. Lu, A. Albuquerque, B.J. Puttnam, T. Sakamoto, M. Drummond, R. Nogueira, A. Kanno, S. Shinada, N. Wada, and T. Kawanishi, “Pump-linewidth-tolerant optical wavelength conversion for high-order QAM signals using coherent pumps”, OSA Optics Express, vol. 22, no. 5, pp. 5067-5075, Mar. 2014.
333. A. Chiba, T. Kawanishi, T. Sakamoto, K. Takada, and M. Izutsu, “Low-Crosstalk Balanced Bridge Interferometric-Type Optical Switch for Optical Signal Routing,” IEEE J. Selected Topics in Quantum Electron. vol. 19, no. 6, p.p. 183-189, 2013.
334. I. Morohashi, Y. Irimajiri, T. Sakamoto, T. Kawanishi, M. Yasui, I. Hosako, “Generation of Millimeter Waves with Fine Frequency Tunability Using Mach-Zehnder-Modulator-Based Flat Comb Generator,” IEICE TRANSACTIONS on Electronics, vol. E96-C, No.2, pp.192-196, 2013.
335. G.W. Lu, T. Sakamoto, and T. Kawanishi, “Flexible high-order QAM transmitter using tandem IQ modulators for generating 16/32/64-QAM with balanced complexity in electronics and optics,” OSA Optics Express, vol. 21, no. 5, pp. 6213-6223, Mar. 2013.
336. I. Morohashi, T. Sakamoto, M. Sudo, A. Kanno, A. Chiba, J. Ichikawa, and T. Kawanishi, “Synthesis of 16 Quadrature Amplitude Modulation Using Polarization-Multiplexing QPSK Modulator,” IEICE TRANSACTIONS on Communications, vol. E94-B, no. 7, pp.1809-1814, 2011.
337. A. Kanno, T. Sakamoto, A. Chiba, M. Sudo, K. Higuma, J. Ichikawa, T. Kawanishi, “90 Gbaud NRZ-DP-DQPSK Modulation with Full-ETDM Technique Using High-Speed Optical IQ Modulator,” IEICE TRANSACTIONS on Communications, vol. E94-C no.7, pp.1179-1186, 2011.
338. A. Kanno, K. Inagaki, I. Morohashi, T. Sakamoto, T. Kuri, I. Hosako, T. Kawanishi, Y. Yoshida, K. Kitayama, “40 Gb/s W-band (75–110 GHz) 16-QAM radio-over-fiber signal generation and its wireless transmission,” OSA Optics Express, vol. 19, no. 26, pp. B56-B63, Nov. 2011.
339. A. Kanno, K. Inagaki, I. Morohashi, T. Sakamoto, T. Kuri, I. Hosako, T.; Kawanishi, Y. Yoshida, K. Kitayama, “20-Gb/s QPSK W-band (75-110 GHz) wireless link in free space using radio-over-fiber technique,” IEICE Electronics Express, vol. 8, no. 8, Apr. 2011.
340. G.W. Lu, T. Sakamoto, and T. Kawanishi, “Rectangular QPSK for generation of optical eight-ary phase-shift keying”, OSA Optics Express, vol. 19, no. 19, p.p. 18479-18485, Aug. 2011
341. G.W. Lu, T. Sakamoto, A. Chiba, T. Kawanishi, T. Miyazaki, K. Higuma, M. Sudo, and J. Ichikawa “Reconfigurable multilevel transmitter using monolithically integrated quad Mach-Zehnder IQ modulator for optical 16-QAM and 8-PSK generation,” OSA Optics. Express., vol. 19, no. 6, pp. 5596-5601, Mar. 2011.
342. A. Chiba, T. Sakamoto, T. Kawanishi, K. Higuma, M. Sudo, and J. Ichikawa, “16-level quadrature amplitude modulation by monolithic quad-parallel Mach-Zehnder optical modulator,” Electron. Lett. vol. 46, no. 3, pp. 227-228, Feb. 2010.
343. I. Morohashi, T. Sakamoto, H. Sotobayshi, T. Kawanishi and I. Hosako, “Broadband wavelength-tunable ultrashort pulse source using a Mach–Zehnder modulator and dispersion-flattened dispersion-decreasing fiber,” Opt. Lett. vol. 34, no.15, pp. 2297-2299, Aug. 2009.
344. G.W. Lu, T. Sakamoto, A. Chiba, T. Kawanishi, T. Miyazaki, K. Higuma, and J. Ichikawa, “Optical minimum-shift-keying transmitter based on a monolithically integrated quad Mach–Zehnder in-phase and quadrature modulator,” Opt. Lett. vol. 34, no. 14, pp.2144-2146, Jul. 2009.
345. G. Qin, T. Sakamoto, N. Yamamoto, T. Kawanishi, H. Sotobayashi, T. Suzuki, and Y. Ohishi, “Tunable all-optical pulse compression and stretching via doublet Brillouin gain lines in an optical fiber,” Opt. Lett. vol. 34, no. 8, pp.1192-1194, Apr. 2009.
346. A. Chiba, T. Sakamoto, and T. Kawanishi, “Adaptive threshold adjustment for signal distortion- free digital-coherent optical demodulation system,” OSA Optics. Express., vol. 16, no. 26, pp. 21647-21655, Dec. 2008.
347. A. Chiba, T. Sakamoto, T. Kawanishi, and M. Izutsu, “Simple, low fluctuation voltage signal generation for 8-Gb/s quadrature amplitude modulation using dual-parallel Mach-Zehnder modulator,” IEICE Electron. Express, vol. 5, no. 14, pp. 497-502, Jul. 2008.
348. I. Morohashi, T. Sakamoto, H. Sotobayshi, I. Hosako, T. Kawanishi, and M. Tsuchiya, “Widely repetition-tunable 200fs pulse source using Mach-Zehnder-modulator-based comb generator and dispersion-flattened dispersion-decreasing fiber,” Opt. Lett. vol. 33, no.11, pp. 1192-1194, June 2008.
349. A.H. Gnauck, G. Charlet, P. Tran, P.J. Winzer, C.R. Doerr, J.C. Centanni, E.C. Burrows, T. Kawanishi, T. Sakamoto, and K. Higuma, “25.6-Tb/s WDM Transmission of Polarization-Multiplexed RZ-DQPSK Signals,” J. Lightwave Technol., vol. 26, no. 1, pp. 79-84, Nov. 2008.
350. H. Kiuchi, T. Kawanishi, M. Yamada, T. Sakamoto, M. Tsuchiya, J. Amagai, and M. Izutsu, "High extinction ratio Mach– Zehnder modulator applied to a highly stable optical signal generator," Microwave Theory and Techniques, IEEE Transactions on, vol. 55, no.9, pp. 1964-1972, Sep. 2007.
351. S. Shinada, T. Kawanishi, T. Sakamoto, M. Adachi, N. Nishikawa, S. Kurokawa, and M. Izutsu, “A 10-GHz Resonant Type LiNbO3 Optical Modulator Array,” IEEE Photon. Technol. Lett. vol. 19, no.10, pp. 735-737, May 2007.
352. T. Kawanishi, T. Sakamoto and M. Izutsu, “High-Speed Control of Lightwave Amplitude, Phase, and Frequency by Use of Electrooptic Effect (Invited Paper),” IEEE Journal of Selected Topics in Quantum Electronics, vol. 13, no.1, pp. 79-91, Jan./Feb. 2007.
353. M. Daikoku, I. Morita, H. Taga, H. Tanaka, T. Kawanishi, T. Sakamoto, T. Miyazaki, and T. Fujita, “100-Gb/s DQPSK Transmission Experiment Without OTDM for 100G Ethernet Transport,” J. Lightwave Technol., vol. 25, no. 1, pp. 139-145, Nov. 2007.
354. F. Morituka, N. Wada, T. Sakamoto, T. Kawanishi, Y. Komai, S. Anzai, M. Izutsu, and K. Kodate, “Multiple optical code-label processing using multi-wavelength frequency comb generator and multi-port optical spectrum synthesizer,” OSA Optics. Express., vol. 15, no. 12, pp. 7515-7521, June 2007.
355. M. Yamada, H. Kiuchi, T. Kawanishi, T. Sakamoto, M. Tsuchiya, J. Amagai and M. Izutsu, “Phase stability measurement of an optical two-tone signal applied to a signal reference source for millimeter and sub-millimeter wave interferometer,” Publications of the Astronomical Society of Japan, vol. 58, no. 4, pp. 787-791, Nov. 2006.
356. T. Kawanishi, T. Sakamoto and M. Izutsu, “Fast optical frequency sweep for ultra fine real-time spectral domain measurement,” Electron. Lett., vol. 42, no. 17, pp. 999-1000, Aug. 2006.
357. S. Shinada, T. Kawanishi, T. Sakamoto, and M. Izutsu, “An Optical Grating Filter Dry-etched on an LiNbO3 Substrate,” IEICE Electronics Express, vol. 3, no. 2, pp. 49-53, Jul. 2006.
358. T. Kawanishi, T. Sakamoto, T. Miyazaki, M. Izutsu, T. Fujita, S. Mori, K. Higuma and J. Ichikawa, “High-speed optical DQPSK and FSK modulation using integrated Mach-Zehnder interferometers,” Optics Express, vol. 14, 4469-4478, May 2006.
359. T. Kawanishi, T. Fujita, K. Higuma, J. Ichikawa, T. Sakamoto and M. Izutsu, “Optical FSK transmission with group delay compensated balance detection,” IEICE Electron. Express, vol. 2, pp. 333-337, June 2005.
360. T. Kawanishi, S. Shinada, T. Sakamoto, S. Oikawa, K. Yoshiara and M. Izutsu, “Reciprocating optical modulator with a resonant modulating electrode,” Electron. Lett., vol. 41, pp. 69-70, Mar. 2005.
361. T. Kawanishi, S. Oikawa, K. Yoshiara, T. Sakamoto, S. Shinada and M. Izutsu, “Low noise photonic millimeter-wave generation using an integrated reciprocating optical modulator,” IEEE Photon. Tech. Lett., vol. 17, pp. 669-671, Mar. 2005.
362. T. Kawanishi, S. Oikawa, K. Yoshiara, S. Shinada, T. Sakamoto and M. Izutsu, “Integrated reciprocating optical modulator using phase-shifted fiber Bragg grating,” IEICE Electron. Express, vol. 2, pp. 49-53, Jan. 2005.
363. T. Fujita, T. Kawanishi, K. Higuma, J. Ichikawa, S. Shinada, T. Sakamoto and M. Izutsu, “10Gbit/s FSK transmission over 95km SMF using a LiNbO3 modulator,” IEICE Electron. Express, vol. 2, no.1, pp. 32-36, Jan. 2005.
364. T. Kawanishi, T. Sakamoto, and M. Izutsu, “All-optical modulation format conversion from frequency-shift-keying to phase-shift-keying,” OSA Optics. Express, vol. 13, no. 20, pp. 8038-8044, Oct. 2005.
365. T. Kawanishi, K. Higuma, T. Fujita, J. Ichikawa, T. Sakamoto, S. Shinada and M. Izutsu, “High-speed optical FSK modulator for optical packet labeling,” J. Lightwave Technol., vol. 23, pp. 87-94, Jan. 2005.
366. T. Kawanishi, T. Sakamoto, S. Shinada and M. Izutsu, “Stable photonic millimeter-wave generation using an integrated reciprocating optical modulator,” IEEE Microwave and Wireless Components Lett., vol. 14, pp. 566-568, Dec. 2004.
367. T. Kawanishi, K. Yoshiara, S. Oikawa, S. Shinada, T. Sakamoto and M. Izutsu, "Integrated reciprocating optical modulator for optical higher-order sideband generation," Jpn. J. Appl. Phys., vol. 43, pp. 5791-5794, Aug. 2004.
368. T. Kawanishi, T. Sakamoto, S. Shinada, and M. Izutsu, “Optical frequency comb generator using optical fiber loops with single-sideband modulation,” IEICE Electron. Express, vol. 1, no. 8, pp 217-221, Jul. 2004.
369. T. Kawanishi, K. Higuma, T. Fujita, J. Ichikawa, S. Shinada, T. Sakamoto, and M. Izutsu, “LiNbO₃ High-speed Optical FSK Modulator,” Electron. Lett., vol. 40, no. 11, pp 691-692, May 2004.
370. T. Kawanishi, T. Sakamoto, S. Shinada, and M. Izutsu, “Optical FSK/IM Signal Generation Using an Integrated Optical FSK Modulator,” IEICE Electron. Express, vol. 1, no. 3, pp. 69-72, May 2004.
371. Y. Fukuchi, T. Sakamoto, K. Taira and K. Kikuchi “All-optical time-division demultiplexing of 160 Gbit/s signal using cascaded second-order nonlinear effect in quasi-phase matched LiNbO₃ waveguide device,” Electron. Lett., vol. 39, no. 10, pp. 789-780, May 2003.
372. H.C. Lim, T. Sakamoto, and K. Kikuchi, ``Polarization-Independent Optical Demultiplexing by Conventional Nonlinear Optical Loop Mirror in a Polarization-Diversity Loop Configuration,'' IEEE Photon. Technol. Lett., vol. 12, no. 12, pp. 1704-1706, Dec. 2000.
373. N. Moon, T. Sakamoto, Y. Takushima and K. Kikuchi, ``Experimental Verification of Gaussian Approximation Model of Multiple Intraband Crosstalk in Wavelength-Division Multiplexed Networks Using Recirculating Fiber Loop,'' IEEE Photon. Technol. Lett., vol. 12, no. 12, pp. 1704-1706, Dec. 2000.
374. Y. Fukuchi, T. Sakamoto, K. Taira, K. Kikuchi, D. Kunimatsu, A. Suzuki, and H. Ito, ``Speed limit of all-optical gate switches using cascaded second-order nonlinear effect in quasi-phase matched LiNbO3 devices,'' IEEE Photon. Technol. Lett., vol. 14, pp. 1267-1269, Sep. 2002.
375. T. Sakamoto, “Optoelectronic Circuits for Control of Lightwaves and Microwaves,” in Optoelectronics - Materials and Technique: InTech, Chapters, Sep., 2011, ch. 12, pp. 313–336.

[Japanese]

376. 日高卓海,坂本高秀, “光コムスペクトル評価のための逆行列データ処理によるエタロン分光器”, 電子情報通信学会論文誌C, vol. J105-C, no. 4, pp. 115-116, 2022年4月. 論文賞受賞論文[ 学生論文特集秀逸論文 ]
377. 桐ヶ谷茉夕,諸橋功,金子優太,片山郁文,入交芳久,坂本高秀,関根徳彦,笠松章史,寳迫巌, “MZMベース超平坦光コム発生器を用いた600GHz帯高精度周波数計測”, 電子情報通信学会論文誌C, vol. J99-C, no. 8, pp. 411-412, 2016年8月.

378. 坂本高秀, 大塚修平，石島　樹 “C-RoF 8PSK信号受信による光ファイバ非線形補償に関する検討”, 電子情報通信学会光ファイバ技術研究会(OFT), 技報 (IEICE-OFT2022-35), vol. 122, no. 210, pp. 73-76, 2022年10月.

379. 坂本高秀,“Conjugated Radio-over-fiberシステムにおけるサイドバンド間遅延の影響”, 電子情報通信学会光ファイバ技術研究会(OFT), 技報 (IEICE-OFT2020-27), vol. 121, no. 199, pp. 101-103, 2021年10月.

380. 坂本高秀, “光時間周波数信号処理による超高速光計測【さきがけ】”, 科学技術振興機構新技術説明会, JST戦略的創造研究推進事業2, 2021年2月.

381. 坂本高秀,“Conjugated Radio-over-fiberシステムにより得られる光ファイバ非線形耐力に関する検討”, 電子情報通信学会光ファイバ技術研究会(OFT), 技報 (IEICE-OFT2020-27), vol. 120, no. 184, pp. 74-77, 2020年10月.

382. 坂本高秀, “光時間周波数サンプリングによる超高速光通信信号計測”, 第10回 文部科学省「最先端の光の創成を目指したネットワーク研究拠点プログラム」シンポジウム, 2018年1月.

383. 坂本高秀,千葉明人“並列型光変調器による生成光コムスペクトルの自己インターリービング”, 電子情報通信学会光ファイバ技術研究会(OFT), OFT信学技報, vol. 117, no. 237, OFT2017-38, pp. 1-5, 2017年10月.

384. 坂本高秀,呂國偉,山本直克,川西哲也“光変調器を用いた光位相共役信号対発生及びその位相感応受信に関する検討”, 電子情報通信学会光通信システム研究会(OCS), OCS信学技報, vol. 116, no. 275, LQE2016-71, pp. 115-118, 2016年10月.

385. 坂本高秀, “[招待講演]OFC2016報告～ 光ネットワーク関連 ～”, 電子情報通信学会光通信システム研究会(OCS),信学技報, vol. 116, no. 27, OCS2016-2, pp. 5-8,2016年5月.(招待講演)

386. 坂本高秀, “光時間周波数サンプリングによる超高速コヒーレント光信号計測(招待講演)”, 第56回光波センシング技術研究会講演会, LST56-7,2015年12月.(招待講演)
387. 坂本高秀, “マルチキャリア信号コヒーレント整合受信器の整合条件に関する検討”, 電子情報通信学会光通信システム研究会(OCS), OCS-2015-11-86,2015年11月.
388. 坂本高秀, 呂　國偉, “電気光学効果型位相共役信号対生成器による光ファイバ非線形効果補償効果のバイアス依存性”, 電子情報通信学会光ファイバ技術研究会(OFT), OFT-2015-10-30,2015年10月.36
389. 坂本高秀, “400Gbps対応超高速コヒーレント光計測技術と利用”, 科学技術振興機構新技術説明会, 情報通信研究機構1,2015年5月.
390. 坂本高秀, 呂　國偉,川西哲也, “光ファイバ中の自己位相変調効果補償のための電気光学効果型位相共役信号対生成器の検討”, 電子情報通信学会光ファイバ技術研究会(OFT), OFT-2014-10-26,2014年10月.
391. 坂本高秀,管野敦史,久利敏明,山本直克,川西哲也, “デジタル光位相同期ループによるROF信号処理”, 電子情報通信学会マイクロ波フォトニクス研究会 (MWP), MWP-2014-04-10,2014年4月.
392. 坂本高秀,管野敦史,川西哲也, “サンプリング型光デジタル位相同期ループによる高速光受信”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2014-01-19,2014年1月.
393. 坂本高秀, “超高密度光ファイバ通信のための多値光変復調、光信号処理”, 電気学会東京支部群馬支所講演会,2013年10月.（招待講演）
394. 坂本高秀, 千葉明人,呂　國偉,諸橋　功,管野敦史,川西哲也,須藤正明,日隈　薫,市川潤一郎, “高速光多値信号のコヒーレント合成法”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2010-07-10,2010年7月.
395. 坂本高秀,諸橋功,川西哲也,井筒雅之, “マハツェンダ変調器型光コム発生源とその制御,” 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2009-62,2009年7月.
396. 坂本高秀,千葉明人,川西哲也, “超高速多値集積化光変調器の研究（招待講演）”, 東北大学通研共同プロジェクト研究会,2008年11月
397. 坂本高秀, “マハツェンダ干渉計を用いた光周波数コム発生器および超短パルス列発生（招待講演）”, 第6回超高速光エレクトロニクス研究会,2008年11月
398. 坂本,川西,千葉,井筒, “光ベクトル変調のための複素デジタル-アナログ変換器”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2007-198,2007年11月.
399. 坂本,川西,井筒, “π/2バイアスシフト型フォトニック発振器”, 電子情報通信学会光エレクトロニクス研究会(OPE), MW-2007,2007年1月.
400. 坂本,川西,井筒, “RE-OEOの周波数変調特性”, 電子情報通信学会光エレクトロニクス研究会(OPE), MW-2006-59,2006年7月.
401. 坂本高秀,川西哲也,井筒雅之, “高速外部変調方式による光最小変移変調のための制御法”, 電子情報通信学会光通信システム研究会(OCS), OCS-2005-08-20,2005年8月.
402. 坂本,川西,井筒, “オフセットフィルタを用いた位相変調器型自励光コム発生器の波長可変動作化”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2005-07-15,2005年7月.
403. 坂本,川西,井筒, “共振変調電極型光電気発振器のマイクロ波注入同期特性”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2005-02-18,2005年2月.
404. 坂本,川西,井筒, “光位相変調器を用いた光電気発振による周波数コム発生”, 電子情報通信学会光エレクトロニクス研究会(OPE), 2004年10月.
405. 坂本,川西,井筒, “光RZ-FSK変調器の変復調特性の解析”, 電子情報通信学会光通信システム研究会(OCS), OCS-2004-76, 2004年8月.
406. 坂本,川西,井筒, “往復逓倍変調器を用いた自励発振型ミリ波生成器”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE2004-68, 2004年7月.
407. 坂本,川西,品田,井筒, “共振電極型光変調器を用いた光電気発振器”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE2003-276, 2004年2月.
408. 坂本,川西,品田,井筒, “往復逓倍変調器を用いたミリ波帯ASK-ROF信号生成及びその特性評価”, 電子情報通信学会光エレクトロニクス研究会(OPE) PN2003-55,2004年1月.

409. 坂本高秀, "超平坦光コムを用いた高度光計測 （招待講演）" ,レーザー学会学術講演会第43回年次大会, H03-19a-XI-01, 2023年1月

410. 坂本高秀, 高口亮，山崎正樹, “デュアルコヒーレントサンプリングによる光キャリア位相ドリフトの統計的評価”,電子情報通信学会総合大会, B-10−51,2020年3月.

411. 坂本高秀, “整合受信による高度光多重コヒーレント受信機への展開”, 電子情報通信学会ソサエティ大会, 2018年9月 (招待講演).

412. 坂本高秀,千葉明人, “並列型光変調器を用いた光コム偶奇モード選択発生に関する検討”,電子情報通信学会総合大会, C-3−26,2018年3月.

413. 坂本高秀,梅沢俊匡,呂　國偉,山本直克,川西哲也, “２次元フォトダイオードアレイを用いた空間整合受信器による空間分割多重光の全チャネル多重分離・復調”,電子情報通信学会ソサエティ大会, B-10−41,2017年9月.
414. 坂本高秀,呂國偉,川西哲也, “集積型偏波多重直交変調器による光位相共役信号対発生”, 電子情報通信学会総合大会, B-10−82,2016年3月.
415. 坂本高秀,呂國偉,川西哲也, “ループアシスト型コヒーレント整合受信器による時間周波数多重信号の一括チャネル分離測定”, 電子情報通信学会ソサエティ大会, B-10-24,2015年9月.
416. 坂本高秀,呂國偉, 川西哲也, “光直交振幅信号受信器における不均一歪みの観測 ”, 応用物理学会春期学術講演会,11a-A13-12, 2015年3月.
417. 坂本高秀,呂國偉,川西哲也, “コヒーレント整合受信による広帯域マルチキャリア信号のチャネル分離に関する検討”, 電子情報通信学会総合大会, B-10-45,2015年3月.
418. 坂本高秀,千葉明人,川西哲也, “多並列型マハツェンダ変調器による光符号化変調”, 電子情報通信学会ソサエティ大会, B-10-81,2009年9月
419. 坂本高秀,呂國偉,千葉明人,川西哲也, “2x2マハツェンダ構造を持った直交変調器による光最小変移変調”, 電子情報通信学会ソサエティ大会, B-10-80,2009年9月
420. 坂本高秀,千葉明人,川西哲也, “4並列型マハツェンダ変調器による光8PSK信号のベクトル合成”, 電子情報通信学会総合大会, B-10-52,2009年3月．
421. 坂本高秀,千葉明人,川西哲也, “4並列型マハツェンダ変調器による50Gb/s,16QAM信号の変復調及びSMF伝送実験”, 電子情報通信学会ソサエティ大会, B-10-69,2008年9月
422. 坂本高秀, 川西哲也, “超平坦光コムによる超高速光波形測定”, 応用物理学会秋期大会,3a-ZN-9, 2008年9月.
423. 坂本高秀,千葉明人,川西哲也, “多並列型光変調器による光直交振幅変調”, 電子情報通信学会総合大会, C-3-60,2008年3月.招待講演
424. 坂本高秀,川西哲也,井筒雅之, “マハツェンダ型光変調器の非対称プッシュプル駆動による超平坦光コム発生”, 応用物理学会秋季大会, 6P-N-10, 2007年9月
425. 坂本,川西,土屋, “マハツェンダ型平坦光コム発生器を用いたピコ秒パルス列生成”, 電子情報通信学会ソサエティ大会,C-4-19, 2007年9月.
426. 坂本,諸橋,川西,外林,寶迫,土屋, “ミリ波・テラヘルツ波発生のためのマハツェンダ変調器型光コム発生源”, 電子情報通信学会ソサエティ大会,CS-6-4, 2007年9月.
427. 坂本,川西,井筒, “マハツェンダ型変調器による広帯域波長可変平坦コム発生”, 電子情報通信学会総合大会,C-4-19, 2007年3月.
428. 坂本,川西,井筒, “マハツェンダ型変調器を用いた超平坦光周波数コム発生”, 電子情報通信学会ソサエティ大会,C-4-9, 2006年9月.
429. 坂本,川西,井筒, “外部変調方式による光最小偏移変調実験”, 電子情報通信学会総合大会,B-10-57, 2006年3月.
430. 坂本,川西,井筒, “実時間スペクトル測定による光電気発振回路の注入同期特性評価”, 応用物理学会秋季大会, 7a-T-23, 2005年9月.
431. 坂本,川西,井筒, “外部変調方式による光最小変移変調のための初期位相変調法”, 電子情報通信学会ソサエティ大会,B-10-52, 2005年9月.
432. 坂本,川西,井筒, “共振変調電極構造型光電気発振器の基本特性”, 応用物理学会春季大会, 31p-ZQ-14, 2005年3月.
433. 坂本,川西,宮崎,井筒,菊池, “外部変調方式による光位相連続周波数偏移変調実験”, 電子情報通信学会総合大会,B-10-50, 2005年3月.
434. 坂本,川西,井筒, “光RZ-FSK変調器の提案”, 応用物理学会秋期大会, 3a-ZN-17,2004年9月.
435. 坂本,川西,宮崎,井筒,菊池, “光SSB変調器を用いた位相連続FSK変調のための条件”, 電子情報通信学会ソサエティ大会,B-10-77,2004年9月.
436. 坂本,川西,品田,井筒, “往復逓倍変調器を用いた光電気発振器”, 電子情報通信学会総合大会,C-14-2,2004年3月.
437. 坂本,品田,川西,井筒, “往復逓倍変調器によるASK-ROF信号の生成”, 電子情報通信学会ソサエティ大会,C-14-12,2003年9月.
438. 日高卓海，石島　樹，原田　駿，坂本高秀,“逆行列データ処理を組み込んだ低解像スペクトラムアナライザによる光コムスペクトルの復元”, 電子情報通信学会光ファイバ技術研究会(OFT), 技報 (IEICE-OFT2022-22), vol. 122, no. OFT-210, pp. 17-19, 2022年10月. 【学生ポスター奨励賞】
439. 高安英都，大塚修平，佐藤優真，坂本高秀,“サンプリングヘテロダインシステムを用いた超高速超高分解スペクトラムアナライザー”, 電子情報通信学会光ファイバ技術研究会(OFT), 技報 (IEICE-OFT2022-25), vol. 122, no. OFT-210, pp. 29-32, 2022年10月. 【学生ポスター奨励賞】
440. 桐ヶ谷茉夕,諸橋功,金子優太,片山郁文,入交芳久,坂本高秀,関根徳彦,笠松章史,寳迫巌, “MZMベース超平坦光コム発生器を用いたテラヘルツ帯周波数計測法の性能評価”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2016-01-28,2016年1月.
441. T. Kuri, T. Sakamoto, and T. Kawanishi, “Phase-Fluctuation-Insensitive Radio-over-Fiber Transmission with Recovered-Constellation Combining Technique”, 電子情報通信学会光ファイバ技術研究会(OFT), OFT-2015-37,2015年10月.
442. G.-W. Lu, T. Sakamoto, and T. Kawanishi, “Data Overlay in Optical Networks through Level-Scalable Flexible Modulation and its Application in Multicast Overlay for WDM-PON”, 電子情報通信学会光ファイバ技術研究会(OFT), OFT-2015-38,2015年10月.
443. 諸橋功,桐ヶ谷茉夕,金子優太,片山郁文,入交芳久,坂本高秀,関根徳彦,笠松章史,寳迫巌, “マッハツェンダ変調器型光コム発生器を用いた電気光学サンプリングによるサブテラヘルツ帯周波数計測,” 電子情報通信学会レーザ•量子エレクトロニクス研究会(LQE),2015年10月.
444. 諸橋功, 坂本高秀, 関根徳彦,川西哲也,笠松章史,寳迫巌, “マッハツェンダ変調器型超平坦光コム発生器を用いた超短光パルス発生（招待講演）”,第１回 超高速光エレクトロニクス研究会,2015年7月.
445. G.-W. Lu, T. Sakamoto, and T. Kawanishi, “Coherently-Pumped FWM in HNLF for 16QAM Wavelength Conversion Free of Phase Noise from Pumps”, 電子情報通信学会レーザ•量子エレクトロニクス研究会(LQE), LQE-2014-84,2014年10月.
446. 千葉優,諸橋功,坂本高秀,片山郁文,関根徳彦,川西哲也,寳迫巌, “マッハツェンダ変調器型光コム発生器およびソリトン圧縮を用いた超短光パルス発生と繰返し周波数可変特性”, 電子情報通信学会マイクロ波フォトニクス研究会 (MWP), MWP-2014-01-11,2014年1月.
447. 千葉明人,川西哲也,坂本高秀,日隈薫,高田和正,井筒雅之, “干渉型光スイッチの高周波領域クロストークの評価および光強度トリマ構造による抑圧”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2014-01-28,2014年1月.
448. 諸橋功, 坂本高秀, 外林秀之, 関根徳彦, 川西哲也, 寳迫巌, "位相変調器を用いた高繰返し短パルスファイバーレーザー”, 光学, vol. 42, no. 9, 453-458, 2013年9月 (解説記事)
449. 諸橋功,坂本高秀,山本直克,小川洋,川西哲也, 寳迫巌, “マッハツェンダ変調器型超平坦光コム発生器の光フィードバックループによる光コム信号の広帯域化,” 電子情報通信学会光エレクトロニクス研究会(OPE),2012年7月.
450. 菅野敦史,坂本高秀,千葉明人,川西哲也,須藤正明,日隈　薫,市川潤一郎, “広帯域光IQ変調器による160Gb/s全ETDM NRZ-DQPSK光変調”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2010-07-08,2010年7月.
451. 千葉明人,坂本高秀,川西哲也,日隈　薫,須藤正明,市川潤一郎, “モノリシック4並列光変調器により生成した16値光直交振幅変調信号の75kmシングルモードファイバ伝送”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2010-07-09,2010年7月.
452. 千葉明人,坂本高秀,川西哲也,日隈薫,井筒雅之, “光強度トリマを備えた干渉型光スイッチにおける光側帯波生成を利用した光信号波長交換手法,” 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2009-63,2009年7月.
453. 諸橋功,坂本高秀,外林秀之,川西哲也, 寳迫巌, “光コム発生器およびチャープパルス増幅を用いた高ピークパワー超短パルス発生,” 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2009-61,2009年7月.
454. 熊本和夫,坂本高秀,菅野敦史,黒川悟,” MWP2007報告（招待講演）”, 電子情報通信学会マイクロ波・ミリ波フォトニクス(MWP)研究会,2007年12月
455. 千葉,坂本,川西,井筒, “高速光QAM信号発生と信号品質評価方法の検討”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2007-200,2007年11月
456. 諸橋功, 坂本高秀, 外林秀之, 川西哲也, 関根徳彦, 寳迫巌, 土屋昌弘, “Femtosecond pulse generation using optical comb generation technique,” JSAP-THz研・IEICE-THz研合同研究会, 2007年7月.
457. 諸橋功, 坂本高秀, 外林秀之, 川西哲也, 寳迫巌, 土屋昌弘, “光コム発生器を用いたフェムト秒パルス発生,” 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2007-63,2007年8月.
458. 木内等, 川西哲也, 山田真澄, 坂本高秀, 土屋昌弘, 雨谷純, 井筒雅之, “高安定光変調器の電波干渉計用光ローカル発振器への応用,” 電子情報通信学会 光エレクトロニクス研究会, OPE-2007-62,2007年8月.
459. 川西哲也, 坂本高秀, 井筒雅之, “光SSB変調による超高速光周波数掃引,” 電子情報通信学会 光ファイバ応用技術研究会,OFT2006-37, 2006.10.13
460. 久利敏明,坂本高秀,今井薫,福本直紀,村越昭彦,東野武史,戸田裕之,” MWP2005報告（招待講演）”, 電子情報通信学会マイクロ波・ミリ波フォトニクス(MWP)研究会,2005年11月
461. 川西哲也, 和田尚也,坂本高秀, 土屋昌弘,井筒雅之, “光FSK変調器を用いた超高消光比強度変調”, 電子情報通信学会光通信システム研究会(OCS), OCS-2005-08-19,2005年8月.
462. 島倉泰久,吉新喜一,坂本高秀，品田聡，川西哲也, “往復逓倍光変調器を用いた60GHz帯ROF送信機の特性評価”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2005-07-15,2005年7月.
463. 品田，川西,坂本,井筒, “静電容量整合型LiNbO3光変調器とアレイ化の検討”, 電子情報通信学会光エレクトロニクス研究会(OPE), OPE-2005-02-19,2005年2月.
464. 福地,坂本,平,菊池, “擬似位相整合ニオブ酸リチウムデバイスの縦続二次非線形光学効果を用いた全光学的超高速時分割多重分離器”, 電子情報通信学会光エレクトロニクス研究会(OPE) PN2003-70,2004年1月.
465. 川西,坂本,品田,及川,吉新,井筒, “６０ＧＨｚ帯ミリ波信号発生用往復逓倍変調器の開発”, 電子情報通信学会光エレクトロニクス研究会(OPE),OPE2003-143- 2003年8月.
466. 品田,川西,坂本,井筒, “5GHz帯LiNbO₃共振型光変調器の数値解析と評価”, 電子情報通信学会光エレクトロニクス研究会(OPE) PN2003-55,2004年1月.
467. 川西,坂本,品田,藤田,日隈,市川,井筒, “FSK/IM同時変調の解析及び応用”, 電子情報通信学会光エレクトロニクス研究会(OPE) PN2003-53,2004年1月.
468. 石島　樹，原田　駿，坂本高秀, “光通信・計測向けの，高深度光変調型広帯域コム光源”, 電子情報通信学会総合大会, C-3/4-6,2023年3月 (招待講演).
469. 生田海,中村迅也,伊藤裕太,坂本高秀,山本直克,中村守里也,“複素リザーバコンピューティングを用いた非線形イコライザによる自己位相変調の補償実験”, 電子情報通信学会総合大会, B-10-25,2023年3月.
470. 桐ヶ谷茉夕,諸橋　功,金子優太,片山郁文,入交芳久,坂本高秀,関根徳彦,笠松章史,寳迫　巌, “テラヘルツ信号源の周波数安定化に向けた電気光学+6+サンプリング法による高精度周波数計測”,電子情報通信学会ソサエティ大会, C-3−13,2017年9月. （依頼講演）
471. 大森雄也,細谷友崇,末光哲也,尾辻泰一,岩月勝美,日隈　薫,市川潤一郎,坂本高秀,山本直克,佐藤　昭,“InP-HEMTを用いたASK/BPSK光データ信号のミリ波帯IFデータ信号へのキャリア周波数下方変換”,電子情報通信学会ソサエティ大会, C-14−6,2017年9月.
472. 梅沢俊匡,坂本高秀,日下田健,菅野敦史，山本直克，川西哲也,“2次元高速フォトディテクターアレーとその応用”,電子情報通信学会ソサエティ大会, CI-5−2,2017年9月. （招待講演）
473. 日下田　健,梅沢俊匡,坂本高秀,川西哲也,“高速2次元PDアレイを用いたマルチモードの位相特性評価”,電子情報通信学会ソサエティ大会, C-14−16,2017年9月.
474. 桐ヶ谷茉夕,諸橋功,金子優太 片山郁文,入交芳久,坂本高秀,関根徳彦,笠松章史,寳迫巌“変調器型光コム発生器を用いた100GHz 帯フリーランニング信号の検出”, 応用物理学会秋季応用物理学会学術講演会, 16p-P1-8, 2016年9月.
475. 田澤英久,大塚節文,坂本高秀, “ツイン型波長選択スイッチによる光コムスペクトル平坦化”, 電子情報通信学会総合大会, C-3−4,2016年3月.
476. Guo-Wei Lu, Danshi Wang, Cheng Wang, Jun Qin, Takahide Sakamoto, Kouichi Akahane, Naokatsu Yamamoto, Hongxiang Wang, Min Zhang, Tetsuya Kawanishi, Shigeru Yamaguchi, “Experimental Investigation of Four-Wave Mixing Effect in Quantumn-Dot Semiconductor Optical Amplifier Physics”, The 62nd Japans Society of Applied Phyiscs (JSAP) Spring Meeting 2015,13a-A15-8, 2015年3月.
477. Guo-Wei Lu, Danshi Wang, Cheng Wang, Jun Qin, Takahide Sakamoto, Kouichi Akahane, Naokatsu Yamamoto, Hongxiang Wang, Min Zhang, Tetsuya Kawanishi, Shigeru Yamaguchi, "Experimental Characterization of Four-Wave MI Xing Effect in Quantum-Dot Semiconductor Optical Amplifier" 12a VI.9,レーザー学会学術講演会第35回年次大会, 2015年1月
478. 諸橋功, 入交芳久, 熊谷基弘 坂本高秀, 関根徳彦, 川西哲也, 落合啓, 寳迫巌, "変調器ベース光コム発生器を用いた広帯域光コム発生と高周波数精度テラヘルツ波発生への応用”, 電子情報通信学会総合大会, CI-3-6, 2014年3月
479. T. Kuri, T. Sakamoto, G.W. Lu, and T. Kawanishi, "DSP-Assisted Optical Coherent Detection of Uplink RoF Signal with the Effect of Phase Noise Cancellation,"2013年電子情報通信学会ソサイエティ大会,C-14-6,2013年9月.
480. 諸橋功, 入交芳久, 坂本高秀, 関根徳彦, 川西哲也, 安井元昭, 寳迫巌, "マッハツェンダ変調器型超平坦光コム発生器を用いた700GHz帯テラヘルツ波発生," 2013年電子情報通信学会ソサイエティ大会,C-3-20,2013年9月.
481. H. Toda, J. Miyashita, A. Chiba, T. Sakamoto, T. Kawanishi, M. Tsuchiya, and M. Izutsu, "Highly pure two-tone lightwave generation using high extinction-ratio optical intensity modulator and delay interferometer,"2008年電子情報通信学会ソサイエティ大会,CS-5-5,2008年9月.
482. 川西哲也,坂本高秀,千葉明人, “LN デバイスによる超高速QPSK/16QAM 変調”, 電子情報通信学会総合大会, BCS-2-2,2008年9月
483. 諸橋功, 坂本高秀, 外林秀之, 川西哲也, 寳迫巌, 土屋昌弘, “MZM平坦コム発生器及びDF-DDFを用いた超短パルス光源の波長可変特性”, 応用物理学会秋期大会,3a-ZB-5, 2008年9月.
484. 川西哲也, 坂本高秀, 千葉明人, “多値変調を実現する高速・高精度光変調技術”, 応用物理学会春季大会, , 2008年3月.
485. 諸橋功, 坂本高秀, 外林秀之, 川西哲也, 寳迫巌, 土屋昌弘, “光周波数コムおよびDF-DDFを用いた高消光比超短光パルス列発生”, 応用物理学会春季大会, , 2008年3月.
486. 戸田裕之,宮下純一,木内等,千葉明人,坂本高秀,川西哲也,土屋昌弘,井筒雅之, “高消光比光強度変調器と遅延干渉計による4逓倍RF信号の発生”, 電子情報通信学会ソサエティ大会,C-3-64, 2008年3月.
487. 千葉明人,坂本高秀,川西哲也,土屋昌弘, “2.0-Gbaud, 16 値光直交振幅変調”, 電子情報通信学会ソサエティ大会,C-3-*, 2007年9月.
488. 山本剛裕,千葉明人,坂本高秀,川西哲也,河野隆二, “光SSB周波数掃引を用いた光OCT用高速広帯域光源の検討”, 電子情報通信学会ソサエティ大会,C-14-6, 2007年9月.
489. 木内等,川西哲也,山田真澄,坂本高秀,土屋昌弘,雨谷純,井筒雅之, “高位相安定フォトニック・ミリメータ波発生とALMA電波干渉計への応用,”電子情報通信学会ソサエティ大会,CS-6-2, 2007年9月.
490. 諸橋功, 坂本高秀, 外林秀之, 川西哲也, 寳迫巌, 土屋昌弘, “光周波数コム光源およびDF-DDFを用いた超短光パルス発生”, 応用物理学会秋季大会, 6p-Y-10, 2007年9月.
491. 千葉明人,川西哲也,坂本高秀,日隈薫,井筒雅之, “光強度のトリミング機構によるマッハツェンダー型LiNbO3光スイッチの高消光比化”, 応用物理学会秋季大会, 4a-P1-23, 2007年9月.
492. 川西哲也,日隈薫,市川潤一郎,坂本高秀,千葉明人,井筒雅之, “高度な位相制御を実現する光変調器技術”, 電子情報通信学会総合会,BS-7-5, 2007年3月.
493. 千葉,川西,坂本,土屋,井筒, “サブマッハツェンダー構造を持つLiNbO₃光スイッチによる低クロストーク動作”, 電子情報通信学会ソサエティ大会,C-3-56, 2006年9月.
494. 川西,坂本,千葉,土屋,井筒, “高消光比光変調による160GHz RoF信号の発生”, 電子情報通信学会ソサエティ大会,C-14-3, 2006年9月
495. 川西哲也,坂本高秀,土屋昌弘,井筒雅之, “光FSK変調器を用いた高消光比RoF信号の発生,” 電子情報通信学会ソサエティ大会,CS-7-6, 2005年9月.
496. 品田,川西,坂本,井筒, “静電容量整合型LiNbO₃光変調器の製作・評価”, 応用物理学会春季大会, 30p-ZQ-17, 2005年3月.
497. 川西,坂本,品田,藤田,日隈,森,市川,井筒, “高速光FSK変調器による高精度光周波数制御”, 応用物理学会秋期大会, 3a-ZN-18,2004年9月.
498. 品田,川西,坂本,井筒, “静電容量整合型LiNbO₃光変調器のためのキャパシタンス解析”, 応用物理学会秋期大会, 3a-ZN-19,2004年9月.
499. 川西哲也, 坂本高秀, 土屋昌弘, 井筒雅之, 光FSK変調器を用いた高消光比RoF信号の発生, 電子情報通信学会ソサイエティ大会 CS-7-6, 2005.9.20
500. 福地,歩行田,T. Kiatchanog,坂本,菊池, “擬似位相整合ニオブ酸リチウムデバイスの縦続二次非線形光学効果を用いた全光学的超高速時分割多重分離器”, 電子情報通信学会ソサエティ大会,C-4-42,2004年9月.
501. 島倉,松本,吉新,坂本,川西,井筒, “往復逓倍光変調器による60 GHzミリ波信号の光ファイバ伝送”, 電子情報通信学会総合大会, C-14-2,2004年3月.
502. 川西,坂本,井筒, “光SSB変調器を用いた光コム発生装置の開発”, 電子情報通信学会総合大会, B-10-79,2004年3月.
503. 川西,及川,吉新,坂本,品田,井筒, “集積型往復逓倍変調器を用いた低位相雑音ミリ波発生”, 電子情報通信学会総合大会, SC-13-4,2004年3月.
504. 品田,川西,坂本,井筒, “LiNbO3基板上格子状フィルタの製作・評価”, 応用物理学会春季大会, 31p-ZV-3,2004年3月.
505. 品田,川西,坂本,井筒, “共振型LiNbO₃光変調器の誘導位相量測定”, 電子情報通信学会ソサエティ大会,C-14-9,2003年9月.
506. 坂本,福地,種村,菊池,``光ファイバの変調不安定現象を利用した全光学的波形再生器,'' 電子情報通信学会,総合大会,仙台, 2003年3月.
507. 坂本,種村,菊池,``非線形ファイバループミラーのオフセット制御による全光符号反転スイッチング,'' 電子情報通信学会,総合大会,早稲田, 2002年3月.
508. 坂本,菊池,``非線形干渉計の雑音抑圧機構を用いた光伝送システムの 解析,'' 電子情報通信学会レーザ・量子エレクトロニクス研究会, OFT00-74, 2000.
509. 坂本,文,中村,菊池,``光ファイバ四光波混合時間多重分離器の短尺偏波保持ファイバによる偏波無依存化,''電子情報通信学会ソサエティ大会, C-3-59, 2001年9月..
510. 坂本,リム,菊池,”短尺偏波保持ファイバ対を用いた偏波無依存非線形ファイバループミラー時間多重分離器”電子情報通信学会総合大会, C-3-9, 2001年3月.
511. 坂本,菊池,”非線形ファイバループミラーを用いた全光学的時間多重分離器に対するプリチャープ制御光パルスの有効性”電子情報通信学会総合大会, C-3-10, 2001年3月.
512. 坂本,菊池,”全光学的干渉計型非線形スイッチの雑音解析”電子情報通信学会総合大会, 2000年3月.
513. 福地,坂本,小関,平,菊池,” 擬似位相整合ニオブ酸リチウム光導波路の縦続二次非線形光学効果を用いた超高速光時分割多重分離器”, 電子情報通信学会総合大会,仙台, 2003年3月.
514. 瀬尾,坂本,平,菊池,”電解吸収効果型変調器を用いたピークホールド型光位相同期ループによる時間多重分離実験”, 電子情報通信学会ソサエティ大会,宮崎, 2002年9月.
515. 福地,坂本,平,国松,菊池,``疑似位相整合縦続二次非線形デバイス用いた全光超高速ゲートスイッチの速度限界,''電子情報通信学会総合大会, 早稲田, 2002年3月..
516. N. Moon, T. Sakamoto, Y. Takushima and K. Kikuchi, “Gaussian Approximation Modeling of Multiple Intraband Crosstalk in WDM Networks and its Experimental Verification”, 電子情報通信学会ソサエティ大会,草津,2001年9月.
517. リム,坂本,菊池,”偏波ダイバーシティ構成による非線形ループミラーの偏波無依存DEMUX動作”電子情報通信学会ソサエティ大会, C-3-125, 2000年9月.
518. 二見史生,坂本高秀,菊池和朗,武田鎮一,菅谷　靖,渡辺茂樹,”高非線形ファイバを用いたNOLMによる0.5ピコ秒パルス波長変換”電子情報通信学会総合大会,C-3-26,1999年3月.
519. 武田鎮一,菅谷　靖,渡辺茂樹,二見史生,坂本高秀,菊池和朗”高非線形ファイバを用いたNOLMによる広帯域波長変換と雑音抑制”電子情報通信学会総合大会,B-10-97,1999年3月.
520. B. Ma, T. Sakamoto, Y. Nakano and K. Tada, "All-Optical Wavelength Conversion Using Directional Coupler Semiconductor Optical Amplifier," the 45th Spring Meeting, Japan Society of Applied Physics and Related Societies, Hachioji, Japan, Feb.1998.
521. 坂本高秀,松本敦，“CLEO2016ショート速報：光デバイス関連”, 光産業技術振興協会国際会議速報，光無機材料・デバイス，H28-No.15, 2016年8月.
522. 坂本高秀， “OFC2016ショート速報：基幹伝送”, 光産業技術振興協会国際会議速報，光情報通信，H27-No.47, 2016年4月.