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. 18, 2006
Filed:
Mar. 19, 2004
Stephen J. Mihailov, Kanata, CA;
Dan Grobnic, Ottawa, CA;
Christopher Smelser, Ottawa, CA;
Robert Walker, Spencerville, CA;
Ping LU, Ottawa, CA;
Huimin Ding, Nepean, CA;
George Henderson, Ottawa, CA;
Xiaoli Dai, Ottawa, CA;
Stephen J. Mihailov, Kanata, CA;
Dan Grobnic, Ottawa, CA;
Christopher Smelser, Ottawa, CA;
Robert Walker, Spencerville, CA;
Ping Lu, Ottawa, CA;
Huimin Ding, Nepean, CA;
George Henderson, Ottawa, CA;
Xiaoli Dai, Ottawa, CA;
Abstract
A novel Bragg grating filter in optical waveguiding fiber with suppressed cladding mode coupling and method of producing same is disclosed. The novel grating structure is induced in both the core and the cladding of the optical fiber irrespective of the photosensitivity of the core or cladding to actinic radiation. Such core and cladding of the optical fiber need not be chemically doped to support the grating. The method incorporates an ultra short duration pulse laser source. Electromagnetic radiation provided from the laser propagates to a diffractive element positioned a specific distance to the target material such that the diffracted electromagnetic radiation forms a 2-beam interference pattern, the peaks of which are sufficiently intense to cause a change in index of refraction.