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:
May. 20, 2008
Filed:
Apr. 22, 2005
Nobutaka Fuke, Tokyo, JP;
Shiro Nakamura, Tokyo, JP;
Jun Ishiguro, Tokyo, JP;
Hiroshi Raijo, Tokyo, JP;
Atsushi Umeda, Tokyo, JP;
Nobutaka Fuke, Tokyo, JP;
Shiro Nakamura, Tokyo, JP;
Jun Ishiguro, Tokyo, JP;
Hiroshi Raijo, Tokyo, JP;
Atsushi Umeda, Tokyo, JP;
Furukawa Electric Co., Ltd., , JP;
Abstract
The present invention provides a variable optical dispersion compensating module comprised of (a) an optical dispersion compensating unit having an input optical switch, an optical dispersion compensating fiber, connected to the optical switch, having a predetermined optical dispersion amount, a bypass path for bypassing the optical dispersion compensating fiber, and an output optical switch connected to the optical dispersion compensating fiber and the bypass path, (b) an optical dispersion compensating circuit with at least one of the unit connected in series, and (c) an optical attenuator provided, in the direction of an optical path, after the input optical switch or before the output optical switch of the optical dispersion compensating circuit.