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:
Jul. 28, 2009
Filed:
Jun. 29, 2005
Morio Wada, Tokyo, JP;
Akira Miura, Tokyo, JP;
Chie Sato, Tokyo, JP;
Katsuya Ikezawa, Tokyo, JP;
Tsuyoshi Yakihara, Tokyo, JP;
Morio Wada, Tokyo, JP;
Akira Miura, Tokyo, JP;
Chie Sato, Tokyo, JP;
Katsuya Ikezawa, Tokyo, JP;
Tsuyoshi Yakihara, Tokyo, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
A variable light signal delay apparatus includes a first delay optical fiber, a second delay optical fiber having a length different from the first delay optical fiber, and an optical switch having two input ports, two output ports, and paths, through which a light signal propagates, provided between the first delay optical fiber and the second delay optical fiber, in which a light signal input from at least one of the input ports propagated through either the first delay optical fiber or the second delay optical fiber or through neither the first delay optical fiber nor the second delay optical fiber to be output from a desired first output port.