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:
Jul. 16, 2002
Filed:
Jul. 01, 1999
WorldCom, Inc., Clinton, MS (US);
Abstract
A state-of-polarization (SOP)-independent device and method for determining polarization mode dispersion (PMD) in an optical communication system having an optical transmission line, including a detector coupleable to the optical transmission line, where the detector is capable of analyzing a pulse shape of an optical signal on the optical transmission line to determine PMD of the optical signal. A corrector may be coupled to the detector , where the corrector is capable of compensating the optical signal for the determined PMD. A controller may be coupled to the detector and the corrector . The pulse shape may comprise an eye diagram, which may contain a first peak and a second peak due to PMD, where the PMD determined by the detector is a function of the distance between the detected first and second peaks, which is indicative of a time delay between the detected first and second peaks. The device and method may also include a verifier coupled to the corrector , where the verifier is capable of verifying that the corrector correctly compensated the optical signal for the PMD.