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:
Apr. 07, 2015
Filed:
Apr. 27, 2012
Masayuki Ichioka, Tokyo, JP;
Mitsuru Sakuma, Tokyo, JP;
Junichiro Ichikawa, Tokyo, JP;
Abstract
Provided is an optical waveguide device capable of reducing stress that occurs inside an optical waveguide substrate due to a difference in a coefficient of thermal expansion. The optical waveguide device () includes an optical waveguide substrate () having a thickness of 30 μm or less, and a liquid crystal polymer substrate () which holds the optical waveguide substrate () and has permittivity lower than that of the optical waveguide substrate (). The optical waveguide substrate () and the liquid crystal polymer substrate () are bonded to each other by an adhesive layer (). Coefficients of thermal expansion of the optical waveguide substrate () and the liquid crystal polymer substrate () have anisotropy in each substrate plane, and a relative direction between the optical waveguide substrate () and the liquid crystal polymer substrate () is adjusted in such a manner that anisotropic axial directions of the optical waveguide substrate () and anisotropic axial directions the liquid crystal polymer substrate () are aligned.