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:
Oct. 19, 2004
Filed:
Aug. 28, 2002
Henry Postolek, Ottawa, CA;
Graham Ian Duck, Ottawa, CA;
Nenad Duricic, Nepean, CA;
Gonzalo de la Puente, Ottawa, CA;
Tinko Eftimov, Ottawa, CA;
Dan Grobnic, Ottawa, CA;
David William Charles Markin, Ottawa, CA;
Martin Matthews, Kanata, CA;
Evgueni A. Ponomarev, Ottawa, CA;
Serguei Roupassov, Ottawa, CA;
Dariusz Sieniawski, Nepean, CA;
JDS Uniphase Inc., Ottawa, CA;
Abstract
A dispersion compensator has a linearly chirped fiber Bragg grating mounted at two ends of an elongated, channel-shaped heat distributor. The distributor has two thermo-electric coolers at two ends, a heating strip for uniform heating of the distributor, a temperature sensor mounted on the distributor in the middle of the grating region, and longitudinally variable heating means attached to the distributor and extending along its length for effecting a longitudinally varying heating of the grating region. The provision of the heating strip helps maintain linearity of the thermal gradient of the distributor while the longitudinally variable heaters facilitate relatively fast dithering of the temperature of the grating region.