Simple, low fluctuation voltage signal generation for 8-Gb/s quadrature amplitude modulation using dual-parallel Mach-Zehnder modulator. - Akito Chiba; Takahide Sakamoto; Tetsuya Kawanishi; Masayuki Izutsu (IEICE Electron. Express, 2008)

Integrated Lithium Niobate Mach-Zehnder Interferometers for Advanced Modulation Formats. - Tetsuya Kawanishi; Takahide Sakamoto; Akito Chiba (IEICE Trans. Electron., 2009)

120-Gb/s NRZ-DQPSK signal generation by a thin-lithium-niobate-substrate modulator. - Atsushi Kanno; Takahide Sakamoto; Akito Chiba; Tetsuya Kawanishi; Kaoru Higuma; Masaaki Sudou; Junichiro Ichikawa (IEICE Electron. Express, 2010)

90 Gbaud NRZ-DP-DQPSK Modulation with Full-ETDM Technique Using High-Speed Optical IQ Modulator. - Atsushi Kanno; Takahide Sakamoto; Akito Chiba; Masaaki Sudo; Kaoru Higuma; Junichiro Ichikawa; Tetsuya Kawanishi (IEICE Trans. Electron., 2011)

Synthesis of 16 Quadrature Amplitude Modulation Using Polarization-Multiplexing QPSK Modulator. - Isao Morohashi; Takahide Sakamoto; Masaaki Sudo; Atsushi Kanno; Akito Chiba; Junichiro Ichikawa; Tetsuya Kawanishi (IEICE Trans. Commun., 2011)

RF frequency quadrupling utilizing selective polarization rotation for wavelength-free radio-over-fiber. - Yosuke Akamatsu; Akito Chiba; Kazumasa Takada (OFC, 2015)