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:
Jul. 17, 2007
Filed:
Nov. 15, 2005
Robert Walker, Spencerville, CA;
Stephen J. Mihailov, Kanata, CA;
Ping LU, Ottawa, CA;
Dan Grobnic, Ottawa, CA;
Xiaoli Dai, Ottawa, CA;
Huimin Ding, Nepean, CA;
George Henderson, Ottawa, CA;
Christopher Smelser, Ottawa, CA;
Robert Walker, Spencerville, CA;
Stephen J. Mihailov, Kanata, CA;
Ping Lu, Ottawa, CA;
Dan Grobnic, Ottawa, CA;
Xiaoli Dai, Ottawa, CA;
Huimin Ding, Nepean, CA;
George Henderson, Ottawa, CA;
Christopher Smelser, Ottawa, CA;
Abstract
The invention relates to an optical waveguide device for monitoring a characteristics of light, e.g. a wavelength. The device incorporates a waveguide, such as an optical fiber, with an embedded tilted Bragg grating operating in a regime of wavelength detuning. The grating is designed to disperse light azimuthally in two or more different directions about the fiber axis, said directions changing with wavelength. A photodetector array is provided for detecting the azimuthal distribution of light. A processor coupled to the photodetector array determines wavelength information from the detected azimuthal distribution of the out-coupled light.