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:
Jul. 14, 2015
Filed:
Oct. 25, 2010
Satoshi Oikawa, Tokyo, JP;
Yuhki Kinpara, Tokyo, JP;
Yasuhiro Ishikawa, Tokyo, JP;
Katsutoshi Kondou, Tokyo, JP;
Satoshi Oikawa, Tokyo, JP;
Yuhki Kinpara, Tokyo, JP;
Yasuhiro Ishikawa, Tokyo, JP;
Katsutoshi Kondou, Tokyo, JP;
Sumitomo Osaka Cement Co., Ltd., Chiyoda-ku, Tokyo, JP;
Abstract
An optical control element capable of efficiently removing unnecessary higher mode light without complicating a manufacturing process of the optical control element is provided. The optical control element includes a substrate having an electro-optical effect, optical waveguides that are formed on the substrate, and a control electrode that controls light waves propagating through the optical waveguides, and the optical waveguides include an output waveguide portion which derives fundamental mode light, and a subsidiary waveguide portion which is connected to the output waveguide portion and derives higher mode light, and removal means is formed in contact with the subsidiary waveguide portion, for removing the higher mode light propagating through the subsidiary waveguide portion.