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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7382985 B1

PDFFull Text
Date of Patent:
Jun. 03, 2008

Filed:

Dec. 02, 2002

Electrical domain mitigation of polarization dependent effects in an optical communications system

Applicants:

Kim B. Roberts, Nepean, CA;

Leo Strawczynski, Ottawa, CA;

Adrien Comeau, Nepean, CA;

John Mcnicol, Ottawa, CA;

Maurice O'sullivan, Ottawa, CA;

Kieran Parsons, Ottawa, CA;

Inventors:

Kim B. Roberts, Nepean, CA;

Leo Strawczynski, Ottawa, CA;

Adrien Comeau, Nepean, CA;

John McNicol, Ottawa, CA;

Maurice O'Sullivan, Ottawa, CA;

Kieran Parsons, Ottawa, CA;

Assignee:

Nortel Networks Limited, St. Laurent, Quebec, CA;

Attorneys:

Kent Daniels

Ogilvy Renault LLP

Primary Examiner:

Jason Chan

Assistant Examiner:

Nathan Curs

Int. Cl.
CPC ...
H04B 10/00 (2006.01); H04B 10/12 (2006.01); H04B 10/04 (2006.01);
U.S. Cl.
CPC ...
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.

Find Patent Forward Citations

Roberts, Kim. (2008). Electrical domain mitigation of polarization dependent effects in an optical communications system (U.S. Patent No. 7382985). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7382985

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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