Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2006-05-02
2006-05-02
Chan, Jason (Department: 2633)
Optical communications
Multiplex
Wavelength division or frequency division
C398S045000
Reexamination Certificate
active
07039318
ABSTRACT:
A variable dispersion compensation to a signal for compensating dispersion present in an optical signal. The invention can be embodied in a dispersion discrimination and compensation system comprising a feedback loop for regulating an amount of dispersion compensation applied by a controlable anti-dispersive element (CADE) to an incoming optical signal. To that effect, the feedback loop comprises a dispersion discriminator for accepting a portion of a signal outgoing form the CADE and to provide a measure of a dispersion characteristic to a processor which controls the amount of dispersion compensation applied by the CADE. The dispersion discrimination and compensation system can be stand-alone or integrated into an optical switch. Furthermore, dispersion compensation can be provided to multichannel optical signals or to partially or totally demultiplexed optical signals.
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Polarization Mode Dispersion Tutorial; Datasheet [online ] Web ProForums retrieved on Jun. 26, 2001; Retrieved from the Internet: <http://www.iec.org/tutorials/polar—mode/index.html>.
Chan Jason
Nortel Networks Limited
Wang Quan-Zhen
Withrow & Terranova , PLLC
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