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. 17, 2019
Filed:
Mar. 31, 2015
Applicant:
Sumitomo Osaka Cement Co., Ltd., Chiyoda-ku, Tokyo, JP;
Inventor:
Katsutoshi Kondou, Tokyo, JP;
Assignee:
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/225 (2006.01); G02F 1/035 (2006.01);
U.S. Cl.
CPC ...
G02F 1/2255 (2013.01); G02F 1/0356 (2013.01);
Abstract
An object of the invention is to provide an optical waveguide device which is able to efficiently absorb or remove leaked light propagating in a substrate. An optical waveguide device in which an optical waveguide is formed on a substrate, in which the optical waveguide includes a main waveguide through which signal light propagates, and a metal layer (a bonding layer or an electrode) is formed, through a high refractive index layer having a refractive index higher than the refractive index of the substrate, in at least a part of a region on which the main waveguide is not formed.