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Reflectively coated optical waveguide and fluidics cell integration

  • US 6,192,168 B1
  • Filed: 04/09/1999
  • Issued: 02/20/2001
  • Est. Priority Date: 04/09/1999
  • Status: Active Grant
First Claim
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1. A waveguide device for surface-sensitive optical detection of a first analyte in a first fluid sample, comprising:

  • a multimode waveguide having a surface bearing patterned, reflective coating, said patterned reflective coating defining a reflectively coated region and a first optically exposed region on said surface;

    said first optically exposed region being sensitive to said first analyte so as to produce an alteration of said first optically exposed region indicative of the presence of said first analyte in said sample, said alteration being detectable by launching a light wave into said waveguide to generate an evanescent field at said patterned surface, and then detecting an interaction of said first optically exposed region with said evanescent wave.

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