A wavelength-tunable short-cavity DBR laser with active distributed Bragg reflector. - Hideo Arimoto; Hiroshi Sato; Takeshi Kitatani; Tomonobu Tsuchiya; Kazunori Shinoda; Aki Takei; Hiroyuki Uchiyama; Masahiro Aoki; Shinji Tsuji (IEICE Electron. Express, 2005)

Compact and Low-Power-Consumption 40-Gbit/s, 1.55-µm Electro-Absorption Modulators. - Hideo Arimoto; Jun-ichiro Shimizu; Takeshi Kitatani; Kazunori Shinoda; Tomonobu Tsuchiya; Masataka Shirai; Masahiro Aoki; Noriko Sasada; Hiroshi Yamamoto; Kazuhiko Naoe; Mitsuo Akashi (IEICE Trans. Electron., 2005)

High-Speed EA-DFB Laser for 40-G and 100-Gbps. - Shigeki Makino; Kazunori Shinoda; Takeshi Kitatani; Hiroaki Hayashi; Takashi Shiota; Shigehisa Tanaka; Masahiro Aoki; Noriko Sasada; Kazuhiko Naoe (IEICE Trans. Electron., 2009)

Wide-Tuning-Wavelength-Range LGLC Laser with Low-Loss Dual-Core Spot Size Converter. - Takanori Suzuki; Hideo Arimoto; Takeshi Kitatani; Aki Takei; Takafumi Taniguchi; Kazunori Shinoda; Shigehisa Tanaka; Shinji Tsuji; Tatemi Ido; Jun Igrashi; Atsushi Nakamura; Kazuhiko Naoe; et al. (IEICE Trans. Electron., 2012)

28-Gb/s directly modulated InGaAlAs ACPM DFB lasers with high mask margin of 22% at 55°C. - Kouji Nakahara; Yuki Wakayama; K. Hiruma; Takeshi Kitatani; Kazunori Shinoda; T. Fukamachi; Yasushi Sakuma; Shigehisa Tanaka (OFC/NFOEC, 2013)

56-Gb/s direct modulation in InGaAlAs BH-DFB lasers at 55°C. - Kouji Nakahara; Yuki Wakayama; Takeshi Kitatani; Takafumi Taniguchi; Toshihiko Fukamachi; Yasushi Sakuma; Shigehisa Tanaka (OFC, 2014)

Superior BER Transmission of 106-Gb/s/lane Skewless PAM4 over 10 km by Utilizing 1.3-μm Directly Modulated InGaAlAs-MQW BH Lasers and Incoherent Multiplexing of Two NRZ Signals. - Kouji Nakahara; Riu Hirai; Takeshi Kitatani; Nobuhiko Kikuchi; Takayoshi Fukui; Kaoru Okamoto; Yasushi Sakuma; Kohichi Robert Tamura; Shigehisa Tanaka (OFC, 2018)

Analysis of TDECQ Dependence on Skew and Extinction Ratio with 106-Gb/s PAM-4 Modulation of Directly Modulated Submicron Ridge Localized Buried Heterostructure Lasers. - Kazuki Suga; Kouji Nakahara; Kaoru Okamoto; Shigenori Hayakawa; Masatoshi Arasawa; Tetsuya Nishida; Ryu Washino; Takeshi Kitatani; Masatoshi Mitaki; Hironori Sakamoto; Yasushi Sakuma; Shigehisa Tanaka (OFC, 2020)

112-Gb/s PAM-4 Uncooled Directly Modulated BH Lasers. - Kouji Nakahara; Kazuki Suga; Kaoru Okamoto; Shigenori Hayakawa; Masatoshi Arasawa; Tetsuya Nishida; Ryu Washino; Takeshi Kitatani; Masatoshi Mitaki; Hironori Sakamoto; Yasushi Sakuma; Shigehisa Tanaka (ECOC, 2021)