Performance Analysis Of Circular Lattice PCF Biosensor Using Surface Plasmon Resonance

摘要

In this paper, a single layer PCF biosensor using SPR is designed for detecting unknown analytes with high sensitivity. The outside of PCF is coated with chemically stable material gold of thickness 30nm, which is the active plasmonic material. The air holes are placed in a position such that more evanescent fields are produced. A Perfectly Match Layer (PML) is applied to the outermost layer of biosensor for analyzing the sensor performance such as losses and sensitivity. The proposed design gives the wavelength sensitivity of 14102nm/RIU (Refractive Index Unit) with analyte changing from 1.40-1.43 and resolution as $6.681imes 10^{-5} RIU$. The simulation of this model is done by using COMSOL MULTIPHYSICS 5.2a.