Toshihiko Kosugi

TL;DR: In this article, a 120-GHz-band wireless link that uses millimeter-wave photonic techniques was developed, which achieved error-free transmission of OC-192 and 10-GbE signals over a distance of more than 200 m with a received power of below -30 dBm.

TL;DR: In this paper, the authors investigated the maximum output power of these devices and compared the phase noise of MMW signals generated by high-speed uni-traveling carrier photodiodes (UTC-PD) and InP high-electron mobility transistor (HEMT) millimeter-wave (MMW) monolithic integrated circuits (MMICs).

TL;DR: In this article, a 120-GHz-band mm-wave monolithic integrated circuits (MMICs) were fabricated using 0.1-mum-gate InP-HEMTs and coplanar waveguides.

TL;DR: In this paper, the transmission characteristics of a 120 GHz-band millimeter-wave wireless link are described and the effects of transmitting 120GHz-band optical subcarrier signals through single-mode fibers were theoretically and experimentally investigated.

TL;DR: 120-GHz-band wireless equipment that can transmit 10-Gbit/s data signal over a distance of more than 5 km is developed and a millimeter-wave amplifier that integrates 0.08-µm-gate-length InGaAs/InP composite-channel high-electron-mobility transistors is used to increase the output power.