Polarization diversity optical receiver for coherent optical...

Details Polarization diversity optical receiver for coherent optical... Polarization diversity optical receiver for coherent optical...

H - Electricity

04

B

325/1

H04B 10/06 (2006.01)

Patent

CA 1293026

POLARIZATION DIVERSITY OPTICAL RECEIVER FOR COHERENT OPTICAL COMMUNICATION ABSTRACT OF THE DISCLOSURE Disclosed is a polarized wave diversity optical receiver for coherent optical communication comprising: an optical local oscillating circuit (7) for oscillating local oscillating light; a mixing circuit (8) for mixing signal light and the local oscillating light to obtain two polarized components; a detecting circuit (9) for detecting the polarized components to output intermedi- ate frequency signals (eS and ep); and a frequency control circuit (11) for controlling, in accordance with the intermediate frequency signals (eS and ep), the oscillating frequency of the optical local oscillating circuit (7). To ensure that the intermediate frequency is not disappeared, the frequency control circuit (11) outputs a combined signal of a sum and a difference of said intermediate frequency signals (eS and ep).

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