Optical communications – Transmitter and receiver system – Including compensation
Reexamination Certificate
2008-06-03
2008-06-03
Chan, Jason (Department: 2613)
Optical communications
Transmitter and receiver system
Including compensation
C398S147000, C398S193000
Reexamination Certificate
active
07382985
ABSTRACT:
Polarization Dependent Effects (PDEs), including Polarization Mode Dispersion (PMD) and Polarization Dependent Loss (PDL) imposed on optical signals conveyed through an optical link are compensated by processing an input signal in the electrical domain prior to transmission. A compensation function is derived that at least partially compensates the PDEs. The communications signal is then processed in the electrical domain using the compensation function to generate an electrical predistorted signal. The electrical predistorted signal is then used to modulate an optical source to generate a corresponding predistorted optical signal for transmission through the optical link. The PDEs of the optical link operate of the predistorted optical signal such at that substantially undistorted optical signal is received at a receiving end of the link.
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Comeau Adrien
McNicol John
O'Sullivan Maurice
Parsons Kieran
Roberts Kim B.
Chan Jason
Curs Nathan
Daniels Kent
Nortel Networks Limited
Ogilvy Renault LLP
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