Dual-Side Polished SPR Biosensor with Wide Sensing Range

In the present paper, we propose a dual side polished photonic crystal fiber (PCF) based biosensor with numerical analysis using the finite element method (FEM) for sensing applications. We use gold (Au) as plasmonic material. Our simulation results show an improved dynamic sensing range, ranges from 1.21 to LAO, operated in the optical to near-infrared (IR) region (0.42-1.0) μm. Moreover, the sensor obtains maximum amplitude and wavelength sensitivity of 1277.47 RIU
^-1
and 5000 nmIRIU respectively with a sensor resolution of 2x10
^-5
.