DQPSK/DPSK optical receiver with tunable optical fibers

Details DQPSK/DPSK optical receiver with tunable optical fibers DQPSK/DPSK optical receiver with tunable optical fibers

2007-12-10

2011-10-04

Phan, Hanh (Department: 2613)

Optical communications

Receiver

C398S208000, C398S209000, C398S212000, C398S213000, C398S188000

Reexamination Certificate

active

08032036

ABSTRACT:
An optical receiver includes a first interferometer having a plurality of arms. The optical receiver further includes first tunable optical filters connected in series with the arms of the first interferometer, where each first tunable optical filter is tuned to filter a region of overlap in the optical frequency spectrum between adjacent optical channels.

REFERENCES:
patent: 7526210 (2009-04-01), Liu
patent: 2006/0171720 (2006-08-01), Agarwal et al.
patent: 2007/0047971 (2007-03-01), Ikeuchi
patent: 2009/0116851 (2009-05-01), Heffner et al.
patent: 2010/0111540 (2010-05-01), Caplan et al.

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