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Optical sensor system

  • US 4,294,513 A
  • Filed: 09/11/1979
  • Issued: 10/13/1981
  • Est. Priority Date: 09/11/1979
  • Status: Expired due to Term
First Claim
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1. An optical sensor system which comprises an optical waveguide, first and second means each for detecting light which is propagated along different paths in said waveguide to reach said detection means, means for deforming said waveguide to provide a bias deformation which, on the average, approximately equally partitions the light energy which propagates to said detecting means along said different paths, and to modulate the partitioning of light energy between said paths in response to the parameter to be sensed, and means for providing an electrical output corresponding to the difference between light energies detected by said first and second detection means.

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