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. 22, 2019
Filed:
Mar. 31, 2016
Sumitomo Osaka Cement Co., Ltd, Tokyo, JP;
Youichi Hosokawa, Tokyo, JP;
Norikazu Miyazaki, Tokyo, JP;
SUMITOMO OSAKA CEMENT CO., LTD., Chiyoda-Ku, Tokyo, JP;
Abstract
Object To provide an optical waveguide device capable of suppressing an excess optical loss at a low level. Means An optical waveguide device including a substrate having an electro-optic effect, an optical waveguideformed on the substrate, and a control electrode having a signal electrodeand ground electrodesandfor controlling light waves that propagate through the optical waveguide, in which the signal electrodehas, in an intersection portion in which the signal electrodeis disposed on the optical waveguide, a narrow portion at which a width of the signal electrodeis narrower than those of portions before and after the intersection portion.