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Substrate index modification for increasing the sensitivity of grating-coupled waveguides

  • US 6,985,664 B2
  • Filed: 08/01/2003
  • Issued: 01/10/2006
  • Est. Priority Date: 08/01/2003
  • Status: Expired due to Fees
First Claim
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1. A grating-coupled waveguide comprising:

  • a substrate;

    a diffraction grating; and

    a waveaulde film that has a higher index of refraction than said substrate which has an index of refraction≦

    1.5, wherein said substrate is a thermoplastic material including at least one of a polyvinylidene fluoride, polymethylpentene and blends of polyvinylidene fluoride/polymethylmethacrylate.

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