Inventor
SHIKADA MINORU
JP7 patents
Patents
7 patentsUS4807227AFeb 21, 1989
Optical wavelength-division switching system with coherent optical detection system
NEC CORP45 citations92
US5301053AApr 5, 1994
Method for transmission and receipt of coherent light signals
NEC CORP22 citations91
US4706300ANov 10, 1987
Optical heterodyne detection pulse receiving system and method
NEC CORP25 citations90
US5432629AJul 11, 1995
Light transmission device capable of stably transmitting a modulated output light beam
NEC CORP26 citations89
US4704741ANov 3, 1987
Bidirectional optical communication system
NEC CORP21 citations80
US4759080AJul 19, 1988
Coherent optical communication system with FSK heterodyne or homodyne detection and little influence by distortion of a modulated optical signal
NEC CORP12 citations72
US4700352AOct 13, 1987
FSK laser transmitting apparatus
NEC CORP18 citations72