Symmetric D-Shaped PCF-SPR Sensor Based on Multi Analyte Sensing Purposes

Abstract

In this study, symmetrical D-shaped PCF-SPR based sensor has been designed for multi analyte sensing purposes. The structure consists of hexagonally arranged air holes on silica background, where gold used as plasmonic material. Double analyte channels have been used with respect to sensing multi refractive index variations. Full Vectorial-Finite Element Method has been employed for numerically analysing the magnetic field distributions, the effective refractive index changes and the confinement losses for proposed sensor. The spectral interrogation method has been also employed for analysing the sensitivities and resolutions of proposed sensor. When the refractive index changes from 1:33 to 1:35, 2300nm=RIU spectral sensitivity obtained with 4.3 × 10-5 RIU resolution.