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:
Feb. 28, 2006
Filed:
Jan. 21, 2004
Tigran Galstian, Quebec City, CA;
Armen Zohrabyan, Quebec City, CA;
Dany Dumont, Quebec City, CA;
Amir Tork, Cap Rouge, CA;
Rouslan Birabassov, Quebec City, CA;
Tigran Galstian, Quebec City, CA;
Armen Zohrabyan, Quebec City, CA;
Dany Dumont, Quebec City, CA;
Amir Tork, Cap Rouge, CA;
Rouslan Birabassov, Quebec City, CA;
Photintech, Inc., Quebec, CA;
Abstract
A variable optical device for selectively controlling propagation of light within an optical waveguide. The optical device comprises: a relief modulation defining a grating disposed proximal the waveguide and having a respective grating index of refraction n; a matrix surrounding at least the relief modulation, the matrix having an index of refraction nthat is controllable, in response to a selected stimulus between a first value that is substantially equal to the grating index of refraction n, and a second value that is different from n; and at least one electrode for supplying the selected stimulus to the matrix-grating system.