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:
Jan. 03, 2012
Filed:
Nov. 30, 2009
Omur M. Sezerman, Kanata, CA;
Kenneth O. Hill, Kanata, CA;
Garland Best, Almonte, CA;
Dwayne R. J. Miller, Port Credit, CA;
Michael Armstrong, Toronto, CA;
Shujie Lin, Toronto, CA;
Omur M. Sezerman, Kanata, CA;
Kenneth O. Hill, Kanata, CA;
Garland Best, Almonte, CA;
Dwayne R. J. Miller, Port Credit, CA;
Michael Armstrong, Toronto, CA;
Shujie Lin, Toronto, CA;
OZ Optics Ltd, Nepean, CA;
Femtonics Corporation, Toronto, CA;
Abstract
The present invention is directed to the creation of optical waveguiding devices from standard optical fibers by the creation of zones of permanently altered refractive index characteristics therein. A high intensity femtosecond laser beam is focused at a predetermined target region in the fiber so as to soften the glass material at the target region. After aligning the focal region with the target region in the fiber there will be relative movement between the focal region and the fiber, which has the effect of sweeping the focal region across the fiber in a predetermined path, so as to create a secondary waveguide path. A portion of the light traveling along the core is removed from the core along the secondary waveguide path such that the device can be utilized as an attenuator, an optical tap, or a polarimeter.