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Abstract
This article proposed a dual core photonic crystal fiber (DC-PCF) biosensor based on surface plasmon resonance (SPR). The finite element method (FEM), wavelength and amplitude interrogation methods are used to analyze the performance of the proposed sensor. The maximum wavelength sensitivity of 9000 nm/RIU and 25,000 nm/RIU, with analyte refractive index (RI) of 1.38, are numerically achieved for x-and y-polarized modes, respectively. Besides that, the structure shows the maximum amplitude sensitivity of around 470 RIU−1 and resolution as high as 1.11 × 10−5 RIU ∼4 × 10−6 RIU for both polarizations. Therefore, the proposed high sensitive biosensor can be useful in different wavelength ranges for the simultaneous detection of biological and biochemical analytes.
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