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. 12, 2013
Filed:
Nov. 26, 2008
Applicants:
Bernard Ruchet, Quebec, CA;
Eric Girard, Montreal, CA;
Gang He, Quebec, CA;
Inventors:
Assignee:
EXFO Inc., Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); G01J 4/00 (2006.01); G02B 5/30 (2006.01); G02B 27/28 (2006.01); G02B 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fiber rotator mechanism for rotating a portion of an optical waveguide, specifically an optical fiber, about a longitudinal axis thereof comprises a motor having a tubular rotor through which the fiber extends, in use, and to which the fiber is secured, directly or indirectly. An optical fiber may be secured by means of a device which also compresses the optical fiber to induce a required birefringence, conveniently by means of a spring-loaded clamping device or a ferrule of shape memory material.