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:
Dec. 30, 2014
Filed:
Mar. 09, 2011
Yasuhiro Ishikawa, Chiyoda-ku, JP;
Katsutoshi Kondou, Chiyoda-ku, JP;
Norikazu Miyazaki, Chiyoda-ku, JP;
Satoshi Oikawa, Chiyoda-ku, JP;
Yasuhiro Ishikawa, Chiyoda-ku, JP;
Katsutoshi Kondou, Chiyoda-ku, JP;
Norikazu Miyazaki, Chiyoda-ku, JP;
Satoshi Oikawa, Chiyoda-ku, JP;
Sumitomo Osaka Cement Co., Ltd., Chiyoda-ku, Tokyo, JP;
Abstract
An optical waveguide device having a Mach-Zehnder type waveguide formed on a substrate is provided in which a slope of two waveguides input to an optical coupler on an output side of the Mach-Zehnder type waveguide is 0 degrees, a waveguide of the optical coupler after being coupled by the optical coupler is a multi-mode waveguide, and the waveguide which is output from the optical coupler is a three-branched waveguide including an output main waveguide and two output sub waveguides interposing the output main waveguide therebetween.