40-Gbit/s TDM transmission technologies based on ultra-high-speed ICs. - Yutaka Miyamoto; Mikio Yoneyama; Taiichi Otsuji; Kazushige Yonenaga; Naofumi Shimizu (IEEE J. Solid State Circuits, 1999)

An 80-Gb/s optoelectronic delayed flip-flop IC using resonant tunneling diodes and uni-traveling-carrier photodiode. - Kimikazu Sano; Koichi Murata; Taiichi Otsuji; Tomoyuki Akeyoshi; Naofumi Shimizu; Eiichi Sano (IEEE J. Solid State Circuits, 2001)

Low-Phase Noise Photonic Millimeter-Wave Generator Using an AWG Integrated with a 3-dB Combiner. - Akihiko Hirata; Hiroyoshi Togo; Naofumi Shimizu; Hiroshi Takahashi; Katsunari Okamoto; Tadao Nagatsuma (IEICE Trans. Electron., 2005)

Near-Field Mapping System Using Fiber-Based Electro-Optic Probe for Specific Absorption Rate Measurement. - Hiroyoshi Togo; Naofumi Shimizu; Tadao Nagatsuma (IEICE Trans. Electron., 2007)

Heterodyne THz-wave receiver with a superconducting tunneling mixer driven by a high sweeping-speed photonics-based THz-wave local oscillator. - Kyoung-Hwan Oh; Naofumi Shimizu; Naoya Kukutsu; Yuichi Kado; Satoshi Kohjiro; Kenichi Kikuchi; Takahiro Yamada; Atsushi Wakatsuki (IEICE Electron. Express, 2009)