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:
Jun. 12, 2012
Filed:
Nov. 12, 2009
Roshan Thapliya, Kanagawa, JP;
Shigetoshi Nakamura, Kanagawa, JP;
Takashi Kikuchi, Kanagawa, JP;
Kazuhiro Hayashi, Kanagawa, JP;
Roshan Thapliya, Kanagawa, JP;
Shigetoshi Nakamura, Kanagawa, JP;
Takashi Kikuchi, Kanagawa, JP;
Kazuhiro Hayashi, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
There is provided an optical device including: a passive core layer in which is formed an optical circuit having a refractive index n; an active core layer covering at least a portion of the optical circuit, exhibiting an electro-optical effect, and having a refractive index of nhigher than n; a lower clad layer over which the passive core layer is formed and having a refractive index nlower than n; an upper clad layer covering the active and passive core layers and having a refractive index nlower than n; a lower electrode disposed below the lower clad layer; and an upper electrode disposed on the upper clad layer, in which the entrance and exit portions of the active core layer are tapered, respectively.