Design and Study of a Photonic Crystal Fiber Biosensor Based on Surface Plasmon Resonance
In this paper, a photonic crystal fiber based biosensor using surface plasmon resonance (SPR) principle is analyzed for the sensing of refractive index in the visible to near-infrared region. A thin layer of gold (Au) is coated inside the central hole which serves the purpose of the plasmonic layer. The finite element method (FEM) is used for analyzing the sensing performance and other characteristics. The optical loss spectrum of this biosensor is observed by varying the structure parameters. This paper analyses the amplitude sensitivity and wavelength sensitivity of the designed PCF-SPR biosensor.
KeywordsPhotonic crystal fiber (PCF) Surface plasmon resonance (SPR) Finite element method (FEM)
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