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:
Aug. 09, 2005
Filed:
Aug. 22, 2002
Mitsutoshi Honda, Hitachi, JP;
Yuichi Sawai, Hitachi, JP;
Takao Ishikawa, Hitachi, JP;
Takashi Naito, Mito, JP;
Mitsutoshi Honda, Hitachi, JP;
Yuichi Sawai, Hitachi, JP;
Takao Ishikawa, Hitachi, JP;
Takashi Naito, Mito, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The invention provides an optical switch that consumes a less power, excels in a high-speed response, and possesses a structure suitable for a miniaturization and multi-channel switching. The optical switch switches a plurality of input signals to a plurality of output positions, in which a laminated structure that has a nonlinear optical layer and a buffer layer laminated in the same number as that of input parts intersects an optical path between the input parts and output parts. By providing the laminated structure using the nonlinear optical thin films, the invention achieves a small matrix optical switch excellent in a high-speed response and suitable for switching a large-capacity of information.