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. 10, 2019
Filed:
Mar. 10, 2016
Sumitomo Osaka Cement Co., Ltd, Tokyo, JP;
Tokutaka Hara, Tokyo, JP;
Norikazu Miyazaki, Tokyo, JP;
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Abstract
Provided is an optical modulator in which degradation of an extinction ratio is suppressed and a temperature drift phenomenon is suppressed. An optical modulator includes: a substrate having an electro-optic effect; an optical waveguide formed on the substrate; and a control electrode for controlling light waves propagating through the optical waveguide, in which the optical waveguide has one or more Mach-Zehnder type optical waveguides (Ato Aand Bto B), the control electrode has DC electrodes (Cto C) which apply DC bias, a feeder electrode which feeds DC bias to the DC electrode crosses one of two branched waveguides of the Mach-Zehnder type optical waveguide, and a first dummy electrode (a dotted line Eor E) is provided at a specific position on the other one of the two branched waveguides, which is a specific position symmetrical in relation to a position at which the feeder electrode crosses the one of the two branched waveguides.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile