公开(公告)号：EP1688785A4

公开(公告)日：2008-02-13

申请号：EP04818553

申请日：2004-11-16

申请人： JURIDICAL FOUNDATION OSAKA IND

发明人： KITAYAMA KEN-ICHI ,  IKEDA KENSUKE ,  JALIL MOHAMMAD ABDUL ,  NAMIKI SHU ,  INOUE TAKASHI

IPC分类号： G02F7/00 ,  G02F1/365 ,  G02F2/02 ,  G02F3/00

CPC分类号： H04B10/299 ,  G02F1/3519 ,  G02F3/00 ,  G02F7/00 ,  G02F2002/006

摘要： An optically encoding circuit (200) uses a plurality of optical encoders including an optical non-linear element having a periodicity different in I/O characteristics associated with light intensity, so as to optically encode a signal light pulse string having a first wavelength according to control light as a pulse string of an optical analog signal having a second wavelength in the vicinity different from the first wavelength and optically sampled, and output the optically-encoded signal light pulse strings from the optical encoders. A light quantization circuit (300) uses a plurality of light threshold value processors connected to the respective optical encoders and including an optical non-linear element having I/O characteristic associated with light intensity having periodicity, so as to subject the carrier light pulse string having the third wavelength in the vicinity different from the first wavelength to the light threshold value processing and light quantization according to the signal pulse light strings which have been optically encoded, and output it as an optical digital signal.