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:
Apr. 29, 2014
Filed:
May. 23, 2011
Hiroshi Takeuchi, Tokyo, JP;
Kohei Mandai, Tokyo, JP;
Koji Takatori, Tokyo, JP;
Yasuyuki Fukashiro, Yokohama, JP;
Hideaki Tsushima, Komae, JP;
Hiroshi Takeuchi, Tokyo, JP;
Kohei Mandai, Tokyo, JP;
Koji Takatori, Tokyo, JP;
Yasuyuki Fukashiro, Yokohama, JP;
Hideaki Tsushima, Komae, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
It is provided an optical receiver comprising a compensator, a compensation controller and a clock extractor. The optical receiver selects first and second values, and obtains a stabilization time necessary to change the dispersion value and a transition time shorter than the stabilization time, compensates the received optical signal using the selected first value, changes the dispersion value from the first value into the second value, compensates the received optical signal using the dispersion value when the transition time has passed since starting to change the dispersion value, creates second extraction information of the dispersion value after the transition time, compensates for dispersion of the optical signal using an dispersion value calculated based on the second value and the difference between the dispersion value after the transition time and the second value in a case where the created second extraction information indicates that the clock extraction is available.