Sensitivity characterization of cladding modes in long-period gratings photonic crystal fiber for structural health monitoring
Measurement(2015)
摘要
•The sensitivity of PCF-LPG as function of external conditions was examined.•PCF can produce numerous modes, including cladding modes with ultra-sensitive coupling.•The maximum or minimum sensitivity for the PCF is determined by cladding mode dispersion.•Two parameter sensing can be achieved with PCF-LPG.
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关键词
Long-period gratings,Photonic crystal fiber,Fiber optic sensor,Refractive index,Cladding modes
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