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:
May. 01, 2012
Filed:
Sep. 19, 2008
Kenji Kawano, Astugi, JP;
Eiji Kawazura, Ebina, JP;
Yuji Sato, Atsugi, JP;
Masaya Nanami, Zama, JP;
Seiji Uchida, Atsugi, JP;
Nobuhiro Igarashi, Sagamihara, JP;
Toru Nakahira, Atsugi, JP;
Satoshi Matsumoto, Tokyo, JP;
Kenji Kawano, Astugi, JP;
Eiji Kawazura, Ebina, JP;
Yuji Sato, Atsugi, JP;
Masaya Nanami, Zama, JP;
Seiji Uchida, Atsugi, JP;
Nobuhiro Igarashi, Sagamihara, JP;
Toru Nakahira, Atsugi, JP;
Satoshi Matsumoto, Tokyo, JP;
Anritsu Corporation, Atsugi-shi, JP;
Abstract
In an optical modulator comprising substratehaving electro-optical effect, two optical waveguidesformed in the substrate, buffer layerformed on the substrate, traveling-wave electrodehaving center conductorand ground conductorsabove the buffer layer, and ridge sections formed with recessed sectionstoby carving at least a part of the substrate where an electrical field strength of high-frequency electrical signal propagating the traveling-wave electrode is strong, in which the ridge sections include center conductor ridge sectionhaving the center conductor formed above and ground conductor ridge sectionhaving the ground conductor formed above, and the center conductor ridge section has one of the two optical waveguides formed therein, the recessed sections are practically symmetrical to the center line between the two optical waveguides and the traveling-wave electrode is practically symmetrical to the center line of the center conductor.