Inventor
ASABAYASHI ISSEI
JP7 patents
Patents
7 patentsUS6229631B1May 8, 2001
Signal transmission system and method for supervising the same
OKI ELECTRIC IND CO LTD163 citations97
US5388001AFeb 7, 1995
Polarization-independent optical wavelength filter with simplified structure
OKI ELECTRIC IND CO LTD27 citations92
US4846542AJul 11, 1989
Optical switch matrix
OKI ELECTRIC IND CO LTD50 citations89
US5163106ANov 10, 1992
Waveguide-type optical switch
OKI ELECTRIC IND CO LTD8 citations73
US5048906ASep 17, 1991
Waveguide type photoswitch with a short coupling region
OKI ELECTRIC IND CO LTD7 citations73
US5123069AJun 16, 1992
Waveguide-type optical switch
OKI ELECTRIC IND CO LTD18 citations72
US4884858ADec 5, 1989
Distributed coupler switch
OKI ELECTRIC IND CO LTD10 citations72