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:
Sep. 14, 2004
Filed:
May. 30, 2002
Wei Xu, Gymea, AU;
Danny Wong, Baulkham Hills, AU;
Graham Town, Erskineville, AU;
John Canning, Carlton, AU;
Paul Blazkiewicz, Moorebank, AU;
The University of Sydney, Sydney, AU;
Abstract
A method of thermally poling a silica based waveguide ( ) comprises exposing a region of the waveguide ( ) to an electric field (for example, via capillary electrodes ( ) inserted into holes in the waveguide); directing a laser beam ( ) into the region exposed to the electric field to effect localized heating of the region via direct absorption; and scanning the laser beam ( ) over the region at a rate selected to avoid heating of the region above the glass transition temperature. Reversing the electric field while scanning the laser beam ( ) allows the formation of periodic poled gratings. The waveguide ( ) can comprise an optical fiber.