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. 10, 2005
Filed:
Apr. 03, 2002
Makoto Katayama, Yokohama, JP;
Toshiaki Okuno, Yokohama, JP;
Masayuki Nishimura, Yokohama, JP;
Tomomi Sano, Yokohama, JP;
Masakazu Shigehara, Yokohama, JP;
Hiroshi Suganuma, Yokohama, JP;
Toru Iwashima, Yokohama, JP;
Tomohiko Kanie, Yokohama, JP;
Makoto Katayama, Yokohama, JP;
Toshiaki Okuno, Yokohama, JP;
Masayuki Nishimura, Yokohama, JP;
Tomomi Sano, Yokohama, JP;
Masakazu Shigehara, Yokohama, JP;
Hiroshi Suganuma, Yokohama, JP;
Toru Iwashima, Yokohama, JP;
Tomohiko Kanie, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An optical signal, which is to become the subject of dispersion compensation, is split by optical combining/splitting unit, and each frequency component of the optical signal that is split is reflected by the corresponding reflective mirrorincluded in reflective mirror groupto apply a predetermined phase shift to the respective frequency components Each reflected frequency component is then combined using optical combining/splitting unit, to give dispersion compensated optical signal Furthermore, in regards to reflective mirror group, which is used to apply phase shift to each frequency component of an optical signal, each of the respective plurality of reflective mirrorsis made a movable mirror having a movable reflection position that reflects the frequency components. Through this, dispersion that develops in an optical signal may be compensated with favorable controllability and high accuracy. Therefore, the precision and controllability of dispersion compensation will become superior, and realized is a variable dispersion compensator having a miniaturized optical circuit, and an optical transmission system comprising such variable dispersion compensator,