Sensitivity characterization of cladding modes in long-period gratings photonic crystal fiber for structural health monitoring

Measurement, pp. 43-51, 2015.

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Keywords:
Long-period gratingsPhotonic crystal fiberFiber optic sensorRefractive indexCladding modes

Abstract:

•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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