Staas & Halsey
Demodulator and a polarization diversity receiver for coherent optical communication provided with the demodulator
 A demodulator comprising an OR/NOR circuit, an exclusive OR/NOR circuit, and a delay circuit is disclosed as that capable of being suitably formed into a monolithic IC. Also, a polarization diversity receiver for coherent optical communication using the above demodulator as its constituent is disclosed as that having a smaller number of variable gain amplifiers and accordingly having the controlling circuit made simpler in structure. 
Fujitsu Limited
H H H
H04B H04B H04B
inventional inventional inventional
Tetsuya George Terumi Hiroshi Shigeki Takao
Kiyonaga Ishikawa Chikama Nakamoto Watanabe Naito