| 摘要 |
Apparatus and method for chemical and biological agent sensing. An example sensing apparatus includes a resonator (36) having a resonance frequency. The resonator (36) includes a coil (38) of a photonic crystal fiber (54) forming a closed light path. The photonic crystal fiber (54) has a solid region (56) configured to guide a substantially single optical mode of light having, a cladding (58) surrounding an exterior of the solid region (56), and at least one hollow channel (46) within the cladding (58). The photonic crystal fiber (54) is configured to introduce a fluid that may contain an analyte to the hollow channel (46). The photonic crystal fiber (54) is configured so that the light interacts with the fluid. The resonator (36) is configured to produce a resonance signal centered at the resonance frequency. A predetermined change in the resonance signal indicates a presence of a quantity of the analyte in the fluid.
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