In this paper, we proposed and analyzed a simple circular slotted micro-channel photonic crystal fiber (MC-PCF) based surface plasmon resonance (SPR) sensor. Using finite element method (FEM) the numerical performances are investigated with an external sensing approach. Gold is a chemically stable material that is used in the purpose of plasmonic material at the thickness of 30nm. Simulation results show that the maximum wavelength sensitivity (WS) 25,000 nm/RIU having wavelength resolution (WR) of 4×10−6 RIU, maximum amplitude sensitivity (AS) is obtained about 1897 RIU-1 showing amplitude resolution (AR) of 6.25×10−6 RIU. In addition, figure of merit (FOM) is found about 277.77 RIU-1 for the analyte refractive index (RI) changes from 1.43-1.44 (RIU). The major nobility is that the proposed sensor shows a broad detection range from 1.33-1.47 RI with the wavelength range from 0.55 to 1.80 µm. Because of the promising sensitivity the proposed model can be applicable for biomolecules and biochemical (i.e., DNA, mRNA, sugar, proteins, carbohydrates, lipids and nucleic acids) sample detection and play the greatest role to detect antibody antigen interaction to find out genome sequences.
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