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:
Jun. 16, 2026
Filed:
Jun. 15, 2022
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 having a plurality of intersections between a convex optical waveguide and a signal electrode, the occurrence of disturbance modulation at the intersections is effectively reduced, thereby achieving good operating characteristics. The optical waveguide device includes an optical waveguide composed of a protruding portion extending on the substrate, and a signal electrode formed on the substrate and controlling a light wave propagating through the optical waveguide. The optical waveguide includes a Mach-Zehnder optical waveguide including two parallel waveguides having a curved portions, the signal electrode includes two signal lines intersecting the two parallel waveguides at the curved portions and transmitting a differential signal, and each of the two signal lines is configured such that the intersection lengths on the two parallel waveguides are the same as each other.