Authors: Lei Jing Jianquan Yao
Publish Date: 2010/09/28
Volume: 6, Issue: 5, Pages: 321-324
Abstract
In this paper a ferroelectric polyvinylidene fluoride PVDFcoated porous polymer fiber based surface plasmon resonance SPRlike gas sensor is proposed theoretically in the terahertz THz region based on the total internal reflection TIR In such a sensor the phase matching is achieved by changing the fiber parameters and the plasmonlike phenomenon at the interface between the ferroelectric polyvinylidene fluoride PVDF layer and the gaseous analyte is discussed Using a fullvector finiteelement method the coremode loss of the fiber is calculated to measure the resolution of the sensor The amplitude resolution is demonstrated to be as low as 145 × 10−4 RIU and the spectral resolution is 130 × 10−4 RIU in THz region where RIU means the refractive index unit
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