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:
Apr. 20, 2010
Filed:
Aug. 13, 2005
Applicants:
Xiang Liu, Marlboro, NJ (US);
Yannick Keith Lize, Montreal, CA;
Xing Wei, Marlboro, NJ (US);
Inventors:
Assignee:
Alcatel-Lucent USA Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical label-switching method and apparatus in which a payload signal is modulated on an optical carrier through differential phase-shift keying (DPSK) by a Mach-Zehnder modulator (MZM), and a label signal is imposed on the DPSK signal by the same MZM through an optical amplitude change effected by modulating the DPSK drive signal or MZM bias.