Min Liu, Yonglin Huang, Ping Zhan. Elliptical Side-Core Photonic Crystal-Fiber Sensor Based on Surface Plasmon Resonance[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0106001
- Laser & Optoelectronics Progress
- Vol. 60, Issue 1, 0106001 (2023)
Fig. 1. SPR-based PCF sensing model with elliptical side core
Fig. 2. Graph of x and y polarization of core fundamental mode loss versus wavelength when na=1.40
Fig. 3. SPP mode and core mode simulation results. (a) 0-order SPP mode; (b) 1-order SPP mode; (c) 2-order SPP mode; (d) 3-order SPP mode; (e) 0-order core mode; (f) 1-order core mode; (g) 2-order core mode; (h) 3-order core mode
Fig. 4. Core loss and real part of effective refractive index vary with incident wavelength when na=1.40
Fig. 5. Core loss curve under different refractive indexes of the liquid to be measured
Fig. 6. Relationship between refractive index of the liquid to be measured and resonance wavelength, core loss, sensor sensitivity when e takes different values. (a) Resonance wavelength; (b) core loss; (c) sensor sensitivity
Fig. 7. Relationship between refractive index of the liquid to be measured and resonance wavelength, sensor sensitivity when e1 takes different values. (a) Resonance wavelength; (b) sensor sensitivity
Fig. 8. Core loss curves under different gold nanolayer thicknesses
Fig. 9. Relationship between the refractive index of the liquid to be measured and sensor sensitivity under different gold nanolayer thicknesses
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Table 1. Resonance wavelength and sensitivity corresponding to different values of ellipticity e1 in the range of 1.40-1.43 for refractive index
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