Field investigation of the radio transmission performance and distance in a environmental wireless sensor network. - Kohta Ohshima; Hiroshi Hara; Yoichi Hagiwara; Matsuaki Terada (ICOIN, 2012)

A compact multilayer triplexer using an ultra-wideband diplexer and a low-pass filter for 2.4GHz wireless systems. - Shinpei Oshima; Koji Wada; Ryuji Murata; Hiroshi Hara; Hitoshi Ebihara; Yukihiro Shimakata (IEICE Electron. Express, 2012)

Compact 8 lane integrated ROSA with low optical loss 1: 8 optical de-multiplexer for 400GbE application. - Masanobu Kawamura; Fumihiro Nakajima; Hiroyasu Oomori; Hiroshi Hara (OFC, 2017)

Very Low Crosstalk Compact Integrated ROSA for 400G-FR4. - Kenichi Nakayama; Kazuaki Mii; Masanobu Kawamura; Hiroyasu Oomori; Hiroshi Hara (ECOC, 2018)

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)