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:
Jun. 21, 2016
Filed:
Dec. 12, 2008
René-jean Essiambre, Red Bank, NJ (US);
Stefan Weisser, Nuremberg, DE;
Peter J. Winzer, Aberdeen, NJ (US);
Chongjin Xie, Morganville, NJ (US);
René-Jean Essiambre, Red Bank, NJ (US);
Stefan Weisser, Nuremberg, DE;
Peter J. Winzer, Aberdeen, NJ (US);
Chongjin Xie, Morganville, NJ (US);
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
A WDM system having at least two channels, each of which employs two polarizations, is arranged so that the start times of symbols carried by one polarization of a channel are displaced in time from the start times of symbols carried by the other polarization of that channel, e.g., the start time for each symbol on one polarization is not substantially synchronized with the closest-in-time symbol start time on the other polarization of that channel. Preferably, the data signals are modulated using a return-to-zero (RZ) format and the start times of the symbols of the data signal carried by one polarization of a channel is offset from the start time of the symbols data signal carried by the other polarization of that channel by between 20% to 80%—preferably 50%—of the symbol period of the data signals, when the data signals have the same symbol period.