Title:
OPTICAL CHANNEL MONITOR, AND METHOD FOR CALCULATING SIGNAL LIGHT LEVEL OF OPTICAL CHANNEL MONITOR
Document Type and Number:
WIPO Patent Application WO2010110078
Kind Code:
A1
Abstract:
An optical channel monitor comprises a wavelength demultiplexer for demultiplexing inputted signal light, a plurality of photodetectors which are arranged on the demultiplexing side of the wavelength demultiplexer and receive the light of a wider wavelength band than the wavelength band of the signal light, and a calculator for calculating the level of the signal light of each of the wavelengths by means of linear compensation on the basis of the reception level of the light within the wavelength band of the signal light and the reception level of the light having the wavelength outside the wavelength band of the signal light in the plurality of photodetectors.
Inventors:
OGUMA TAKEFUMI (JP)
Application Number:
PCT/JP2010/054085
Publication Date:
September 30, 2010
Filing Date:
March 11, 2010
Export Citation:
Assignee:
NEC CORP (JP)
OGUMA TAKEFUMI (JP)
OGUMA TAKEFUMI (JP)
International Classes:
G01J3/02; H04B10/079; H04J14/02
Domestic Patent References:
| WO1998054862A1 | 1998-12-03 |
Foreign References:
| JP2007139578A | 2007-06-07 | |||
| JP2008134091A | 2008-06-12 | |||
| JPH10107741A | 1998-04-24 |
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)
Akio Miyazaki (JP)
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