Chip Improvements for Future IGBT Modules. - John F. Donlon; Eric R. Motto; Tetsuo Takahashi; Hidenori Fujii; Katsumi Satoh (IAS, 2008)

Cost comparison of different ROADM architectures. - Shota Shimazaki; Yoshihiro Tamura; Dai Hanawa; Kimio Oguchi; Toshio Watanabe; Tetsuo Takahashi (APCC, 2013)

Physical-contact conditions for multicore fiber optical connectors. - Kota Shikama; Yoshiteru Abe; Shuichi Yanagi; Tetsuo Takahashi (OFC/NFOEC, 2013)

Silica-based PLC 1×N switch for all wavelength bands. - Toshio Watanabe; Takayuki Mizuno; Yasuaki Hashizume; Tetsuo Takahashi (OFC, 2014)

Petabit/s Optical Transmission Using Multicore Space-Division-Multiplexing. - Hidehiko Takara; Tetsuo Takahashi; Kazuhide Nakajima; Yutaka Miyamoto (IEICE Trans. Commun., 2014)

8 × 8 wavelength cross connect with add/drop ports integrated in spatial and planar optical circuit. - Naru Nemoto; Yuichiro Ikuma; Kenya Suzuki; Osamu Moriwaki; Toshio Watanabe; Mikitaka Itoh; Tetsuo Takahashi (ECOC, 2015)

8 × 24 wavelength selective switch for low-loss transponder aggregator. - Yuichiro Ikuma; Kenya Suzuki; Naru Nemoto; Etsu Hashimoto; Osamu Moriwaki; Tetsuo Takahashi (OFC, 2015)

Ultra-high port count wavelength selective switch employing waveguide-based I/O frontend. - Kenya Suzuki; Yuichiro Ikuma; Etsu Hashimoto; Keita Yamaguchi; Mikitaka Itoh; Tetsuo Takahashi (OFC, 2015)

Multicore Fiber Connector with Physical-Contact Connection. - Kota Shikama; Yoshiteru Abe; Shuichiro Asakawa; Shuichi Yanagi; Tetsuo Takahashi (IEICE Trans. Electron., 2016)