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:
Dec. 09, 2003
Filed:
Apr. 03, 2002
Makoto Katayama, Yokohama, JP;
Tomohiko Kanie, Yokohama, JP;
Masayuki Nishimura, Yokohama, JP;
Shunichi Tsuchiya, Sagamihara, 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 each reflective surface of reflective mirror of reflective means to 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 means , which is used to apply phase shift to each frequency component of an optical signal, reflective mirror is made a variable movable mirror by reflection position at each reflective surface, which reflects the frequency components, deforming the entire reflective surface. This allows dispersion that is created in an optical signal to be compensated with favorable controllability and high accuracy. As a result, it becomes possible to provide a variable dispersion compensator that presents high precision and controllability of dispersion compensation, and has a miniaturized optical circuit, and an optical transmission system comprising such variable dispersion compensator.