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. 01, 2026
Filed:
Sep. 30, 2022
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Kosuke Okahashi, Tokyo, JP;
Yu Kataoka, Tokyo, JP;
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Abstract
An object of the present invention is to provide an optical waveguide device that suppresses optical absorption even in a case where an electrode clearance is narrow. An optical waveguide device of the present invention includes a substrateon which an optical waveguideis formed, and a control electrodedisposed close to the optical waveguide on the substrate, in which the optical waveguideis a protruding optical waveguide, and a shape of a side surface of the control electrodefacing the optical waveguide includes an inclined surfacehaving a predetermined angle from the substrate and a curved surfacethat is contiguous to the inclined surface and that forms a curved recess.