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:
Oct. 14, 2008
Filed:
Aug. 31, 2006
Junji Oohara, Nisshin, JP;
Yukihiro Takeuchi, Nishikamo-gun, JP;
Junji Oohara, Nisshin, JP;
Yukihiro Takeuchi, Nishikamo-gun, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A method for manufacturing an optical device is provided. The device includes an optical waveguide path having a Bragg grating and a movable portion disposed near the Bragg grating. A displacement of the movable portion provides a change of spacing of the Bragg grating so that a light passing through the optical waveguide path is changed. The optical device detects the physical quantity based on a change of the light. The method includes steps of: forming the optical waveguide path with the Bragg grating on a first part of a silicon substrate; and forming the movable portion on a second part of the silicon substrate.