An ultra-low-power-consumption high-speed GaAs quasi-differential switch flip-flop (QD-FF). - Tadashi Maeda; Keiichi Numata; Masahiro Fujii; Masatoshi Tokushima; Shigeki Wada; Muneo Fukaishi; Masaoki Ishikawa (IEEE J. Solid State Circuits, 1996)

A high-speed low-power tri-state driver flip flop for ultra-low supply voltage GaAs heterojunction FET LSI's. - Tadashi Maeda; Keiichi Numata; Masatoshi Tokushima; Masaoki Ishikawa; Muneo Fukaishi; Hikam Hida; Yasuo Ohno (IEEE J. Solid State Circuits, 1996)

A 150 mW 8: 1 MUX and a 170 mW 1: 8 DEMUX for 2.4 gb/s optical-fiber communication systems using n-AlGaAs/i-InGaAs HJFET's. - Masahiro Fujii; Keiichi Numata; Tadashi Maeda; Masatoshi Tokushima; Shigeki Wada; Muneo Fukaishi; Masaoki Ishikawa (IEEE Trans. Very Large Scale Integr. Syst., 1998)

Development of high-yield fabrication technique for MEMS-PhC devices. - Akio Higo; Satoshi Iwamoto; Satomi Ishida; Yasuhiko Arakawa; Masatoshi Tokushima; Akiko Gomyo; Hirohito Yamada; Hiroyuki Fujita; Hiroshi Toshiyoshi (IEICE Electron. Express, 2006)

Ultra-Small Silicon Photonic Wire Waveguide Devices. - Tao Chu; Hirohito Yamada; Shigeru Nakamura; Masashige Ishizaka; Masatoshi Tokushima; Yutaka Urino; Satomi Ishida; Yasuhiko Arakawa (IEICE Trans. Electron., 2009)

High-efficiency folded shallow-grating coupler with minimal back reflection toward isolator-free optical integration. - Masatoshi Tokushima; Jun Ushida; Toshinori Uemura; Kazuhiko Kurata (ECOC, 2015)

5 mW/Gbps hybrid-integrated Si-photonics-based optical I/O cores and their 25-Gbps/ch error-free operation with over 300-m MMF. - Kenichiro Yashiki; Yasuyuki Suzuki; Yasuhiko Hagihara; Mitsuru Kurihara; Masatoshi Tokushima; Junichi Fujikata; Akio Ukita; Koichi Takemura; Takanori Shimizu; Daisuke Okamoto; Jun Ushida; Shigeki Takahashi; et al. (OFC, 2015)

25-Gbps error-free operation of chip-scale Si-photonics optical transmitter over 70°C with integrated quantum dot laser. - Kenichiro Yashiki; Kenji Mizutani; Jun Ushida; Yasuyuki Suzuki; Mitsuru Kurihara; Masatoshi Tokushima; Junichi Fujikata; Yasuhiko Hagihara; Kazuhiko Kurata (OFC, 2016)

25-Gbps/ch Error-Free Operation over 300-m MMF of Low-Power-Consumption Silicon-Photonics-Based Chip-Scale Optical I/O Cores. - Kenichiro Yashiki; Toshinori Uemura; Mitsuru Kurihara; Yasuyuki Suzuki; Masatoshi Tokushima; Yasuhiko Hagihara; Kazuhiko Kurata (IEICE Trans. Electron., 2016)

Resonant Wavelength Variation Modelling for Microring Resonators based on Fabrication Deviation Analysis. - Tsuyoshi Horikawa; Daisuke Shimura; Hiroyuki Takahashi; Jun Ushida; Yohei Sobu; Akemi Shiina; Masatoshi Tokushima; Seok-Hwan Jeong; Keizo Kinoshita; Tohru Mogami (ECOC, 2017)

Fingertip-Size Optical Module, "Optical I/O Core", and Its Application in FPGA. - Takahiro Nakamura; Kenichiro Yashiki; Kenji Mizutani; Takaaki Nedachi; Junichi Fujikata; Masatoshi Tokushima; Jun Ushida; Masataka Noguchi; Daisuke Okamoto; Yasuyuki Suzuki; Takanori Shimizu; Koichi Takemura; et al. (IEICE Trans. Electron., 2019)