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:
Oct. 05, 2010
Filed:
Dec. 17, 2008
Yuichi Iwata, Nagoya, JP;
Osamu Mitomi, Nagoya, JP;
Jungo Kondo, Nishikamo-Gun, JP;
Kenji Aoki, Ichinomiya, JP;
Yuichi Iwata, Nagoya, JP;
Osamu Mitomi, Nagoya, JP;
Jungo Kondo, Nishikamo-Gun, JP;
Kenji Aoki, Ichinomiya, JP;
NGK Insulators, Ltd., Nagoya, Aichi-Prefecture, JP;
Abstract
An object of the present invention is, in an optical modulator, to increase the production yield by enhancing the patterning accuracy of the electrodes, as well as to reduce the electrode loss by increasing the thickness of the electrodes. An optical modulator has a substratemade of an electro-optical material; a modulation electrodeA,A,B provided on the substrate; and an optical waveguideprovided on the substrate. Light propagating through the optical waveguideis modulated by applying a modulation voltage to the modulation electrode. At least a part of the modulation electrode includes a baseformed on the substrateand a projection parthaving a width narrower than that of the base.