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Swept frequency reflectometry using an optical signal with sinusoidal modulation

  • US 20040208523A1
  • Filed: 01/30/2002
  • Published: 10/21/2004
  • Est. Priority Date: 01/30/2002
  • Status: Abandoned Application
First Claim
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1. A method for characterizing an optical transmission path in a network with network traffic, the method comprising:

  • modulating an optical signal with a pilot tone and outputting the modulated optical signal onto the optical transmission path;

    sweeping the pilot tone across a frequency range;

    detecting amplitudes and phases of the pilot tone along a forward path and a reflected path of the optical transmission path; and

    characterizing the optical transmission path based on the detected amplitudes and phases.

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