Abstract
A highly sensitive D-shaped photonic crystal fiber (PCF) based surface plasmon resonance (SPR) sensor for refractive index (RI) detection is presented in this paper. Plasmonic materials are set down outside of the fiber structure to distinguish the adjustments in the analyte refractive index. Using the finite-element method (FEM) method with a circular perfectly matched boundary layer (PML) plasmonic optical properties of silver (Ag), gold (Au) and copper (Cu) have been simulated, investigated and compared. The designed D-shaped PCF-based SPR sensor provides highest wavelength sensitivity for Ag 8000 nm /RIU, Au 5000 nm /RIU, Cu 5000 nm /RIU (refractive index unit), respectively and maximal amplitude sensitivity for Ag of 3858 RIU−1, Au of 911 RIU−1, Cu of 1523 RIU−1. Industrial 4.0 which refers to the fourth industrial revolution will much more relay on industrial internet of things (IIOT) and machine to machine communication. Therefore, this types of nanoscale SPR sensor will open a new horizon for industry 4.0.
Published Version
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