A Dual-Core Surface Plasmon Resonance-Based Photonic Crystal Fiber Sensor for Simultaneously Measuring the Refractive Index and Temperature

In this correspondence, a new photonic crystal fiber biosensor structure on the basis of surface plasmon resonance is proposed for measurement refractive index (RI) and TSM temperature simultaneously. design, central external are coated with thin gold film. A hole adjacent to inner film filled temperature-sensitive material (TSM). With implementation internal coatings along TSM, achieves RI two disjoint wavelength coverage. Numerical simulations calculation results illustrate that average sensitivity structure, respectively, 7080 nm/RIU 3.36 nm/°C coverage from 1.36 1.41 0 60 °C. Moreover, benefiting realization different regions in sensing, it believed will have range applications fields medical diagnostics environmental assessments.