Inventor

YOSHIKUNI YUZO

JP4 patents

Patents

4 patents

US5325392AJun 28, 1994

Distributed reflector and wavelength-tunable semiconductor laser

NIPPON TELEGRAPH & TELEPHONE100 citations92

US7113702B2Sep 26, 2006

Wavelength division multiplexing optical transmission system and transmission method

NIPPON TELEGRAPH & TELEPHONE20 citations88

US5025448AJun 18, 1991

Method and apparatus for stabilizing frequency of semiconductor laser

NIPPON TELEGRAPH & TELEPHONE16 citations70

US4856005AAug 8, 1989

Wavelength conversion element for a semiconductor laser

NIPPON TELEGRAPH & TELEPHONE14 citations70