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Sensor and method for detecting fiber optic faults

  • US 20030103211A1
  • Filed: 12/04/2001
  • Published: 06/05/2003
  • Est. Priority Date: 12/04/2001
  • Status: Active Grant
First Claim
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1. A sensor for determining a length of an optical path, the sensor comprising:

  • a light source configured to direct light along said optical path;

    at least one modulator optically coupled to said light source, said at least one modulator configured to modulate at least a portion of said light as a function of a modulation signal;

    a detector optically coupled to said at least one modulator configured to produce a detector output based upon a sensed intensity of said light at the end of said optical path; and

    an electronics system configured to receive said detector output, and to provide an output indicative of the optical path length.

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