Dual balanced optical signal receiver

Details Dual balanced optical signal receiver Dual balanced optical signal receiver

1989-11-08

1991-03-26

Woodiel, Donald O.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455616, H04B 1006

Patent

active

050036262

ABSTRACT:
An optical signal receiver comprising an optical mixing/polarization splitting unit for producing IF optical signals having two orthogonally polarized components, an optical signal receiving unit for producing four corresponding IF electric signals, and a combining circuit for combining two IF electric signals having one polarization with the other two IF electric signals having the other polarization, suppressing fluctuation of the polarization and the intensity noise of the related local optical signal. The intensity noise suppression is also effective for IF electric signals having a higher frequency range.

REFERENCES:
patent: 3971930 (1976-07-01), Fitzmaurice et al.
patent: 4506388 (1985-03-01), Monerie
patent: 4718120 (1988-01-01), Tzeng

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