Demodulator and a polarization diversity receiver for coherent o

Details Demodulator and a polarization diversity receiver for coherent o Demodulator and a polarization diversity receiver for coherent o

1991-07-15

1993-10-12

Goldstein, Herbert

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359191, 359195, H04B 1006

Patent

active

052530973

ABSTRACT:
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.

REFERENCES:
patent: 4397042 (1983-08-01), Tsujii et al.
patent: 4547738 (1985-10-01), Bayer et al.
patent: 4584693 (1986-05-01), Levy et al.
patent: 4804925 (1989-02-01), Iwase et al.
patent: 4870659 (1989-09-01), Oishi et al.
Proceedings of the Forth Tirrenia International Workshop on Digital Communications, "Coherent Optical Communications and Photonic Switching", pp. 19-34, Sep., 1989.

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