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Single mode (SM) fiber optical reader system and method for interrogating resonant waveguide-grating sensor(s)

  • US 7,424,178 B2
  • Filed: 12/17/2007
  • Issued: 09/09/2008
  • Est. Priority Date: 02/14/2005
  • Status: Expired
First Claim
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1. A system, comprising:

  • a light source;

    a light detector; and

    a launch/receive system which includes;

    a single mode optical fiber; and

    a lens, wherein said single mode optical fiber is interfaced with said light source and said light detector, wherein said single mode optical fiber is physically separated from said lens and said lens is physically separated from a biosensor, wherein said single mode optical fiber emits a light beam generated by said light source such that the emitted light beam is focused by said lens before interfacing at a substantially normal incidence with the biosensor, wherein said biosensor reflects the light beam such that the reflected light beam passes through said lens and said single mode optical fiber and is received by said light detector.

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