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Detecting a Disturbance in the Propagation of Light in an Optical Waveguide

  • US 20080297772A1
  • Filed: 11/03/2005
  • Published: 12/04/2008
  • Est. Priority Date: 11/03/2004
  • Status: Active Grant
First Claim
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1. An apparatus for detecting a disturbance in the propagation of light in an optical waveguide, the apparatus having a light source for sending a light pulse along the waveguide, the light pulse being substantially coherent and varying in intensity over its duration to provide two sections of higher intensity separated from one another by a section of lower or substantially zero intensity.

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