Fast wavelength switching of fully heater-tuned CSG-DR lasers. - Hiroyuki Matsuura; Toshimitsu Kaneko; Ken Tanizawa; Eiichi Banno; Katsumi Uesaka; Haruhiko Kuwatsuka; Shu Namiki; Hajime Shoji (OFC/NFOEC, 2013)

Hardware efficient QAM16 all-optical carrier recovery using a single optically-stabilized injection-locked semiconductor laser. - Aaron Albores-Mejia; Toshimitsu Kaneko; Eiichi Banno; Katsumi Uesaka; Hajime Shoji; Haruhiko Kuwatsuka (ECOC, 2014)

A compact low-power 224-Gb/s DP-16QAM modulator module with InP-based modulator and linear driver ICs. - Taizo Tatsumi; Naoki Itabashi; Tomoko Ikagawa; Naoya Kono; Morihiro Seki; Keiji Tanaka; Kazuhiro Yamaji; Yasushi Fujimura; Katsumi Uesaka; Takashi Nakabayashi; Hajime Shoji; Shoichi Ogita (OFC, 2014)

Optical-comb-line selection from a low-power/low-OSNR comb using a low-coherence semiconductor laser for flexible ultra-dense short range transceivers. - Aaron Albores-Mejia; Toshimitsu Kaneko; Eiichi Banno; Katsumi Uesaka; Hajime Shoji; Haruhiko Kuwatsuka (OFC, 2015)

Dynamic parametric dispersion compensation using FPGA pump controller and dispersion monitor. - Ken Tanizawa; Hiroyuki Matsuura; Kensuke Ogawa; Toshimitsu Kaneko; Eiichi Banno; Katsumi Uesaka; Shigehiro Takasaka; Hidenori Iwai; Kazuya Ota; Haruhiko Kuwatsuka; Yoichi Oikawa; Takeshi Yagi; et al. (OFC, 2015)

High receiver responsivity and low dark current of InP-based pin-photodiode array monolithically integrated with 90° hybrid and spot-size converter using selective embedding regrowth. - Hideki Yagi; Naoko Inoue; Takehiko Kikuchi; Ryuji Masuyama; Tomokazu Katsuyama; Yoshihiro Tateiwa; Katsumi Uesaka; Yoshihiro Yoneda; Masaru Takechi; Hajime Shoji (IEICE Electron. Express, 2015)

High Optical Output Power and High-responsivity IC-TROSA for 800 Gbps applications. - Munetaka Kurokawa; Kenichi Nakayama; Masaru Takechi; Yasutaka Mizuno; Taichi Misawa; Eiichi Banno; Hiroshi Uemura; Yoshiyuki Sugimoto; Seiji Kumagai; Takuya Okimoto; Naoya Kono; Tsutomu Ishikawa; et al. (ECOC, 2021)

Low Insertion Loss 128-Gbaud HB-CDM with 3D-Printed Spot Size Converter Integrated InP-based Modulator. - Yasutaka Mizuno; Munetaka Kurokawa; Naoki Itabashi; Taichi Misawa; Masaru Takechi; Hiroshi Uemura; Hajime Tanaka 002; Tsutomu Ishikawa; Tomoya Saeki; Keiji Tanaka; Takatoshi Kato; Manabu Shiozaki; et al. (OFC, 2023)

200 mW High-Power Tolerant Vertically-Coupled Beam-Expanding Lens (VCBEL) for PIC to Fiber Coupling. - Yasutaka Mizuno; Hiroshi Uemura; Tomoya Saeki; Keiji Tanaka; Katsumi Uesaka (OFC, 2025)