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. 06, 2026
Filed:
Aug. 03, 2021
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Norikazu Miyazaki, Tokyo, JP;
Toru Sugamata, Tokyo, JP;
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Abstract
In an optical waveguide device using a convex optical waveguide, the absorption loss of guided light at an intersection between an optical waveguide and an electrode is reduced, without deteriorating optical characteristics and reducing long-term reliability. Provided is an optical waveguide device including a substrate on which an optical waveguide is formed, and an electrode having an intersection crossing over the optical waveguide on the substrate, in which the optical waveguide is formed with a protruding portion extending on the substrate, a resin layer is provided between the optical waveguide and the electrode at the intersection, the resin layer is formed to cover an upper surface and a side surface of the protruding portion of the optical waveguide, and in a cross section along a width direction of the optical waveguide, a boundary with the electrode is formed with a curve.