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:
Mar. 29, 2011
Filed:
Aug. 15, 2006
Kenji Kawano, Atsugi, JP;
Masaya Nanami, Zama, JP;
Yuji Sato, Atsugi, JP;
Seiji Uchida, Atsugi, JP;
Nobuhiro Igarashi, Sagamihara, JP;
Toru Nakahira, Atsugi, JP;
Hiroaki Senda, Isehara, JP;
Kenji Kawano, Atsugi, JP;
Masaya Nanami, Zama, JP;
Yuji Sato, Atsugi, JP;
Seiji Uchida, Atsugi, JP;
Nobuhiro Igarashi, Sagamihara, JP;
Toru Nakahira, Atsugi, JP;
Hiroaki Senda, Isehara, JP;
Anritsu Corporation, Atsugi-shi, JP;
Abstract
An optical modulator, including: a substrate; an optical waveguide embedded in the substrate; a traveling wave electrode mounted on the substrate and having a traveling wave applied thereon so that a light wave is modulated by the traveling wave with an electro-optic effect. The traveling wave electrode includes a center electrode and ground electrodes; in which the optical waveguide has a plurality of interaction optical waveguides that form a Mach-Zehnder optical waveguide that modulates the light wave in a phase modulation manner when the traveling wave is applied to the traveling wave electrode, the interaction optical waveguides form a region where respective widths of the interaction optical waveguides are different from each other, and the center electrode and the ground electrodes are positioned such that interaction efficiencies between the high frequency electric signal and the light wave guided in the respective interaction optical waveguides are substantially equal to each other.