Fig. 1. Schematic of cross section of PCF

Fig. 2. Influence of sensor structure parameters on its performance. (a) Influence of diameter of central hole d1 on loss spectra; (b) influence of diameter of air hole d2 in cladding on loss spectra; (c) influence of diameter of ch1 d3 on magnetic field sensitivity; (d) influence of diameter of ch2 d4 on temperature sensitivity; (e) influence of distance of air hole Λ on loss spectra

Fig. 3. Influence of ch1 metal layer thickness tAu1 on y-polarized loss curve

Fig. 4. Influence of ch2 metal layer thickness tAu2 on y-polarized loss curve

Fig. 5. Influence of Ta2O5 thickness tao on y-polarized loss curve

Fig. 6. Electric field distributions of y polarization under different wavelengths. (a) λ=735 nm; (b) λ=580 nm; (c) λ=803 nm

Fig. 7. Real part of effective refractive index of y-polarized mode and SPP mode, and y-polarized loss spectra under different conditions

Fig. 8. Performance of PCF-SPR device as a function of temperature. (a) Loss spectra; (b) resonant wavelength shift

Fig. 9. Performance of PCF-SPR device as a function of magnetic induction intensity. (a) Loss spectra; (b) resonant wavelength shift