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.:
Date of Patent:
May. 12, 2009
Filed:
Dec. 23, 2005
Han Sun, Nepean, CA;
Slobodan Jovanovic, Bethesda, MD (US);
Kuang Tsan Wu, Kanata, CA;
Chandra Bontu, Nepean, CA;
Kim B Roberts, Nepean, CA;
Jianzhong Xu, Gaithersburg, MD (US);
Han Sun, Nepean, CA;
Slobodan Jovanovic, Bethesda, MD (US);
Kuang Tsan Wu, Kanata, CA;
Chandra Bontu, Nepean, CA;
Kim B Roberts, Nepean, CA;
Jianzhong Xu, Gaithersburg, MD (US);
Nortel Networks Limited, St. Laurent, Quebec, CA;
Abstract
A method of recovering a clock signal from an optical signal received through an optical communications system. A digital sample stream is processed to generate a dispersion compensated signal. The dispersion compensated signal is then tapped to obtain upper side band and lower side band signals of each received polarization of the optical signal. The upper side band sand lower side band signals are then processed to compensate polarization dependent impairments and the clock recovered from the resulting optimized.