A Surface Plasmon Resonance Sensor Based on D-Shaped All-Solid Photonic Crystal Fiber

In this letter, a surface plasmon resonance (SPR) sensor model based on all-solid birefringent photonic crystal fiber (PCF) is showed. This fiber biosensor configuration utilizes two large media rods in the x-axis to introduce birefringence into the structure and solves analyte filling problems in PCF-based SPR sensor by side-polishing fiber. We investigate the effect of the radius of the big media rods and the polishing depth on the performance of the SPR sensing, and confirm the relationship between wavelength and phase of SPR fiber sensor sensitivity. This investigation enables us to evaluate the probability of all-solid D-shaped PCF application to develop high sensitivity SPR sensors for chemical, biological, and biochemical sensing.