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:
Aug. 19, 2008
Filed:
Jul. 13, 2007
Mikhail Boroditsky, South Amboy, NJ (US);
Mikhail Brodsky, Millburn, NJ (US);
Nicholas J. Frigo, Annapolis, MD (US);
Peter Magill, Freehold, NJ (US);
Mikhail Boroditsky, South Amboy, NJ (US);
Mikhail Brodsky, Millburn, NJ (US);
Nicholas J. Frigo, Annapolis, MD (US);
Peter Magill, Freehold, NJ (US);
AT&T Corp., New York, NY (US);
Abstract
Polarization mode dispersion (PMD) induced system penalty ε is determined from optical characteristics of an optical wavelength division multiplexed (WDM) signal that is carried on a network. The method involves tapping the optical WDM signal, separating an optical channel from the tapped optical WDM signal, performing a frequency-resolved state of polarization (SOP) measurement on the channel, and computing the PMD-induced system penalty as ε=AL+BL, in which A and B are predetermined parameters and L is an SOP string length based on the SOP measurement.