Li-Juan ZHAO, Hai-Ying ZHAO, Zhi-Niu XU, Ruo-Yu LIANG. Design of a diagonally symmetrical photonic crystal fiber for chemical sensing[J]. Journal of Infrared and Millimeter Waves, 2022, 41(1): 2021101
- Journal of Infrared and Millimeter Waves
- Vol. 41, Issue 1, 2021101 (2022)
Fig. 1. The cross-section of the designed PCF
Fig. 2. Meshed model with boundary condition
Fig. 3. Relative sensitivity for (a) water (b) ethanol (c) benzyne as a function of wavelength
Fig. 4. Relative sensitivity as a function of (a) wavelength (b) refractive index for water, ethanol and benzyne when a1=0.7 μm, b1=0.5 μm
Fig. 5. Change of the relative sensitivity of the PCF with the degree of mesh refinement
Fig. 6. Variation of effective refractive index with respect to PML variation
Fig. 7. The values of Veff for (a) water, (b) ethanol, (c) benzyne as a function of wavelength
Fig. 8. Refractive index of different structures as a function of wavelength (a) x-pol, (b) y-pol
Fig. 9. Birefringence of different structures as a function of wavelength
Fig. 10. Birefringence (a) when b1 is set to a fixed value, (b) when a1 is set to a fixed value
Fig. 11. Confinement loss of different structures as a function of wavelength
Fig. 12. Confinement loss (a) when b1 is set to a fixed value, (b) when a1 is set to a fixed value
Fig. 13. The energy distribution of the fiber core when b1=0.5 μm and (a) a1=0.4 μm, (b) a1=0.5 μm, (c) a1=0.6 μm, (d) a1=0.7 μm
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Table 1. Sellmeier coefficients of SiO2
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Table 2. Relative sensitivity for chemical analytes at typical wavelengths
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Table 3. The properties of PCF with different structures
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Table 4. Comparison of properties of different PCFs
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