RZ-DPSK optical receiver circuit

Details RZ-DPSK optical receiver circuit RZ-DPSK optical receiver circuit

2005-11-10

2009-10-27

Vanderpuye, Ken N (Department: 2613)

Optical communications

Receiver

Including optical waveguide

C398S202000, C398S203000, C398S204000, C398S207000, C398S212000

Reexamination Certificate

active

07609982

ABSTRACT:
A received RZ-DPSK signal is guided to an interferometer. The interferometer comprises a 1-bit delaying element in an upper arm. A balanced photodiode converts a pair of optical signals output from the interferometer into electrical signal. A high-pass filter, which has a cut-off frequency equal or approximately equal to the symbol rate of transmission data, filters the signal output from the balanced photodiode. A BPSK demodulator circuit demodulates the output signal of the high-pass filter.

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patent: 7333732 (2008-02-01), Domagala
patent: 2004/0081470 (2004-04-01), Griffin
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patent: 2005-100574 (2005-04-01), None

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