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Fiber bragg crating sensor interrogation method

  • US 7,512,291 B2
  • Filed: 05/31/2006
  • Issued: 03/31/2009
  • Est. Priority Date: 05/31/2006
  • Status: Active Grant
First Claim
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1. A method of monitoring a plurality of FBG transducers distributed along a single optical fiber, comprisingdirectly connecting to a single point of said single optical fiber an integrated optic sensor microchip having a planar waveguide structure including a plurality of ports located along the edges of said microchip waveguide;

  • interrogating said FBG transducers with a broadband spectrum light source coupled to said fiber through one of said ports located along the edges of said microchip waveguide; and

    receiving at others of said ports located along the edges of said microchip waveguide the respective wavelength-encoded signatures of said FBG transducers in response to said interrogating.

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