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:
Sep. 16, 2014
Filed:
May. 23, 2011
Applicants:
Hiromitsu Sugahara, Tokyo, JP;
Takefumi Oguma, Tokyo, JP;
Inventors:
Hiromitsu Sugahara, Tokyo, JP;
Takefumi Oguma, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/07 (2013.01);
U.S. Cl.
CPC ...
Abstract
A light channel monitor includes an optical separating section configured to separate a wavelength multiplexed optical signal into optical signals for channels and monitors configured to measure intensities of the optical signals for the channels. A processing section is configured to correct the measured intensities of the optical signals based on a wavelength transmission characteristic of the optical separating section to calculate the wavelength multiplexed optical signal before the separation.