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MEASUREMENT OF POLARIZATION MODE DISPERSION OR DIFFERENTIAL GROUP DELAY OF AN OPTICAL PATH

  • US 20110142440A1
  • Filed: 12/14/2009
  • Published: 06/16/2011
  • Est. Priority Date: 12/14/2009
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a receiver to receive a first optical signal from a first channel associated with a first wavelength and a second optical signal from a second channel associated with a second wavelength,wherein the first optical signal and the second optical signal traveled along a same optical path, wherein the first optical signal and the second optical signal are synchronized, and wherein the second optical signal includes varying polarization;

    a detector to determine a plurality of differential travel delays between the first optical signal and the second optical signal over a period of varying polarizations of the second optical signal, wherein the plurality of differential travel delays include a maximum differential travel delay and a minimum differential travel delay; and

    a processor to determine a differential group delay based on the maximum differential travel delay and the minimum differential travel delay.

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