Optical receiving method utilizing polarization diversity...

Details Optical receiving method utilizing polarization diversity... Optical receiving method utilizing polarization diversity...

H - Electricity

04

B

325/1

H04B 10/00 (2006.01) H04B 10/148 (2006.01) H04L 27/22 (2006.01)

Patent

CA 1308440

ABSTRACT An optical receiving method utilizing polarization diversity is disclosed in which first and second reference lightwaves having different frequencies and having polarization planes substantially perpen- dicular to each other, are combined with a signal lightwave to form a combined lightwave, the combined lightwave is subjected to heterodyne detection to obtain a detection signal, the detection signal is separated into first and second intermediate-frequency signals having different carrier frequencies, the first and second intermediate-frequency signals are converted into first and second baseband signals, respectively, and the first and second baseband signals are added to obtain an output signal.

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