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. 24, 2002
Filed:
Oct. 31, 2000
Akihiko Nishiki, Tokyo, JP;
Shigeki Ogura, Kanagawa, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A method of fabricating an optical waveguide device has the steps of forming a Bragg grating by applying ultraviolet light to an optical waveguide to generate photoinduced refractive index changes, and adjusting characteristics of the Bragg grating by applying ultraviolet light for trimming to the optical waveguide. The Bragg grating forming step is executed by applying ultraviolet light to the optical waveguide through a phase mask, and the adjusting step is executed by applying ultraviolet light for trimming to the optical waveguide not through the phase mask.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile