Deterministic first and second order polarization mode...

Optical communications – Transmitter and receiver system – Including compensation

Reexamination Certificate

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C398S161000, C398S081000, C398S147000, C398S148000, C398S149000, C398S150000, C398S151000

Reexamination Certificate

active

07151898

ABSTRACT:
A polarization mode dispersion (PMD) feedforward compensator compensates first and second order PMD. An optical signal is provided to a PMD detector that senses first and second order PMD in the optical signal and produces control signals for the PMD compensator. The PMD compensator comprises, in series, a first polarization controller, an adjustable delay, a second polarization controller, a first fixed delay, a third polarization controller and a second fixed delay.

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