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OPTICAL POWER MONITOR, OPTICAL POWER CONTROL SYSTEM AND OPTICAL POWER MONITOR METHOD

  • US 20130251365A1
  • Filed: 12/04/2012
  • Published: 09/26/2013
  • Est. Priority Date: 03/23/2012
  • Status: Active Grant
First Claim
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1. An optical power monitor that detects optical power of respective wavelengths of a signal light in a wavelength multiplexing system, comprising:

  • a light emitter configured to superimpose a frequency modulation component on a signal light;

    a wavelength tunable filter configured to sweep a pass band of the signal light across a wavelength band for a signal light; and

    a detector configured to detect intensity changes in optical power passing through the wavelength tunable filter with a frequency modulation of the optical power, and to detect an optical power measurement value at a middle point of two points of the intensity changes of the optical power as the optical power of a wavelength to be measured.

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