Optical power monitoring method and apparatus
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United States of America Patent
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Apr 21, 2015
Grant Date -
Feb 6, 2014
app pub date -
Oct 11, 2013
filing date -
Apr 12, 2011
priority date (Note) -
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Abstract
The present invention discloses an optical power monitoring method and apparatus. The present invention includes: measuring broadened spectrums of optical signals of monitored channels after performing filtering processing on the optical signals, to obtain a measured broadened spectrum of the optical signals of the monitored channels; constructing a plurality of optical signal power combinations; performing calculation for each optical signal power combination according to a transfer function that indicates the filtering processing, to obtain its corresponding theoretical broadened spectrum of the optical signals of the monitored channels; comparing a plurality of theoretical broadened spectrums with the measured broadened spectrum to find a theoretical broadened spectrum that is closest to the measured broadened spectrum; and determining each hypothetical optical power in an optical signal power combination corresponding to the theoretical broadened spectrum as an actual optical power of an optical signal of a corresponding monitored channel.
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