Fig. 1. The schematic configuration of tapered fiber SPR sensor

Fig. 2. Simulation results of the dielectric constants of WS₂

Fig. 3. The influence of the tapering ratio on the multimode fiber SPR sensor sensitivity

Fig. 4. The influence of the WS₂ on the tapered fiber WS₂-Au SPR sensor sensitivity

Fig. 5. The manufacturing process of tapered fiber WS₂-Au SPR sensor

Fig. 6. The micrographs of the sensor

Fig. 7. Experimental measurement system and tapered fiber WS₂-Au SPR sensor

Fig. 8. The transmission spectrum of sensors

Fig. 9. The RI linear fitting curve of fiber optic SPR sensor without and with taper

Fig. 10. The characteristic of the tapered fiber Au-WS₂ SPR sensor

Fig. 11. The characteristic of the tapered fiber WS₂-Au SPR sensor

Fig. 12. The characteristic of fiber optic SPR sensors with four different structures