Temperature Dependent Signal-to-noise Ratio and Sensitivity of a Surface Plasmon Resonance Based Fiber Optic Sensor
نویسندگان
چکیده
In the present paper, a theoretical analysis for predicting the effect of temperature on the performance of a fiber optic SPR sensor has been carried out. The sensor configuration is a three layer Krestchmann configuration consisting of fiber core, thin metallic layer, and bulk sensing layer. The optical fiber considered is a multimoded fiber. The effect of temperature is included in terms of thermo -optic effect in fiber core and sensing layer whereas phonon-electron scattering and electron-electron scattering in the metallic layer. The effect of temperature has been studied on the signal-to-noise ratio (SNR) and sensitivity of a fiber optic SPR sensor in different conditions related to sensing layer and metallic layer. The analysis is carried out for both non-remote sensing case as well as remote sensing case. The purpose of the present work is to present the best possible design of a fiber optic SPR sensor against the temperature variation.
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