| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and a method for chemical/biological agent sensing. SOLUTION: The sensing apparatus includes a resonator having a resonance frequency. The resonator includes a coil of a photonic crystal fiber. The photonic crystal fiber has a solid region configured to guide a substantially single optical mode of light having an evanescent tail, a first cladding surrounding the exterior of the solid region, and a polymer coating the first cladding. The polymer has an embedded indicator. The first cladding and polymer are together configured to extend a portion of the evanescent tail into the polymer. The resonator is configured to produce a resonance form centered at the resonance frequency. A predetermined change in the resonance form or the free spectral range indicates a reaction of the indicator to the agent. COPYRIGHT: (C)2008,JPO&INPIT
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