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:
Mar. 30, 2010
Filed:
Jul. 09, 2008
Stephen J. Mihailov, Kanata, CA;
Dan Grobnic, Ottawa, CA;
Christopher W. Smelser, Ottawa, CA;
Robert B. Walker, Spencerville, CA;
Ping LU, Kanata, CA;
Xiaoli Dai, Kanata, CA;
Huimin Ding, Nepean, CA;
Gino Cuglietta, Kanata, CA;
Stephen J. Mihailov, Kanata, CA;
Dan Grobnic, Ottawa, CA;
Christopher W. Smelser, Ottawa, CA;
Robert B. Walker, Spencerville, CA;
Ping Lu, Kanata, CA;
Xiaoli Dai, Kanata, CA;
Huimin Ding, Nepean, CA;
Gino Cuglietta, Kanata, CA;
Abstract
A method of inducing birefringence in an optical waveguide is disclosed wherein the waveguide cladding is irradiated with energy of a sufficient intensity so as to induce a stress in the optical waveguide so as to cause a multitude of spaced stress induced regions within the cladding of the optical waveguide such that there are 10 to 5000 spaced regions per mm and wherein the stress induced regions are proximate the core greater than 2 microns distance from the core-cladding interface. This waveguide has numerous uses, for example a fiber sensor.