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Guided-mode resonance sensors employing angular, spectral, modal, and polarization diversity for high-precision sensing in compact formats

  • US 8,111,401 B2
  • Filed: 01/22/2007
  • Issued: 02/07/2012
  • Est. Priority Date: 11/05/1999
  • Status: Expired due to Fees
First Claim
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1. A GMR sensor assembly comprising:

  • a waveguide structure configured for operation at or near one or more leaky modes;

    means for receiving input light from a source of light onto the waveguide structure to cause one or more leaky TE and TM resonant modes;

    means for detecting changes in one or more of the phase, waveshape and/or magnitude of each of a TE resonance and a TM resonance to permit distinguishing between first and second physical states of said waveguide structure or its immediate environment.

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