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. 17, 2013
Filed:
May. 23, 2011
Morihiko Ota, Tokyo, JP;
Morihiko Ota, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An optical receiver module includes an optical receiver that receives and converts a plurality of optical signals depending on different polarized states into a plurality of electric signals, a bit error detector that detects a plurality of bit error rates from electric signals, a maximum value detector that detects a maximum bit error rate among bit error rates, a dispersion compensating controller that calculates a dispersion compensating value based on the maximum bit error rate, and a variable dispersion compensator that performs dispersion compensation against waveform degradation of received optical signals. Thus, it is possible to accurately search for an optimum dispersion compensating value in a transmission line susceptible to polarized dispersion. This makes it possible to stabilize dispersion compensating control on the optical receiver.