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:
Jan. 11, 2005
Filed:
Feb. 06, 2003
Richard L. Lachance, Sainte-Foy, CA;
Philippe Pépin, Beauport, CA;
Tristan Rüthers, Lachine, CA;
François Pelletier, St-Augustin-de-Desmaures, CA;
Richard L. Lachance, Sainte-Foy, CA;
Philippe Pépin, Beauport, CA;
Tristan Rüthers, Lachine, CA;
François Pelletier, St-Augustin-de-Desmaures, CA;
Teraxion Inc., Sainte-Foy, CA;
Abstract
The present invention discloses practical and power efficient assemblies for applying a temperature gradient to a fiber Bragg grating. An application of such assemblies is, for example, the active tuning of the chromatic dispersion of the grating. The temperature gradient is produced in a heat conductive element, with which the FBG is in continuous thermal contact, by elements controlling the temperature of the ends of the heat conductive element, thereby applying the temperature gradient to the FBG. A first preferred embodiment includes a heat recirculation member allowing the recirculation of heat between the two ends of the heat conductive elongated element, thereby providing a rapid and dynamical tuning of the temperature gradient with a minimal heat loss. A second embodiment provides isolation from the surrounding environment in order to decouple the desired temperature gradient from ambient temperature fluctuations, thereby improving the control of the optical response of a fiber grating.