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Fiber optic self-multiplexing amplified ring transducer and force transfer sensor with pressure compensation

  • US 5,589,937 A
  • Filed: 05/02/1995
  • Issued: 12/31/1996
  • Est. Priority Date: 10/31/1994
  • Status: Expired due to Fees
First Claim
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1. A fiber optic sensor system, comprising:

  • a first optical power source for generating a light pulse;

    an optical fiber loop system coupled to receive said light pulse, wherein said light pulse circulates in said optical fiber loop system at a circulation frequency, and which includes;

    a transducer which modulates said circulation frequency in response to detecting a changing physical condition;

    an optical fiber gain medium for amplifying said light pulse;

    a second optical power source for providing optical energy to said optical fiber gain medium; and

    a detector system for receiving a portion of said light pulse received from said optical fiber loop system and generating an output signal representing said circulation frequency.

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