Optical communications – Receiver – Including optical element
Reexamination Certificate
2011-01-18
2011-01-18
Pascal, Leslie (Department: 2613)
Optical communications
Receiver
Including optical element
Reexamination Certificate
active
07873286
ABSTRACT:
A simplified optical receiver architecture capable of tracking and demultiplexing polarization-multiplexed signals, dynamically compensating for PMD using a variety of polarization controller technologies, and reducing the number of delay line demodulators by two for both DPSK and DQPSK modulation is illustrated. Once polarization is stabilized at the first stage of the cascaded system of the present invention, subsequent stages can be simplified and cost reduced.
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Bernard Christopher L.
Brown Tyler S.
Ciena Corporation
Clements Bernard PLLC
Pascal Leslie
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