Journal of Infrared and Millimeter Waves, Volume. 41, Issue 1, 2021101(2022)
Design of a diagonally symmetrical photonic crystal fiber for chemical sensing
Figures & Tables(17)
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
Table 1. Sellmeier coefficients of SiO2
View tableView in ArticleTable 1. Sellmeier coefficients of SiO2
Coefficients B1 C1/µm2 B2 C2/µm2 B3 C3/µm2 Values 0.6961663 4.679 148 26×10-3 0.407 942 60 1.351 206 3×10-2 0.897 479 40 97.934 002 5
Table 2. Relative sensitivity for chemical analytes at typical wavelengths
View tableView in ArticleTable 2. Relative sensitivity for chemical analytes at typical wavelengths
Wavelength/μm Relative sensitivity/% Water Ethanol Benzyne 1.3 46.5% 51.9% 54% 1.33 41.5% 53.5% 53.4% 1.5 53.2% 57.2% 61.1% 1.55 56.3% 59.9% 62.5%
Table 3. The properties of PCF with different structures
View tableView in ArticleTable 3. The properties of PCF with different structures
Parameter/μm Relative sensitivity/% Birefringence Confinement loss/（dB·m-1） Water Ethanol Benzyne a1=0.4，b1=0.3 40.1 44.8 47.4 1.732×10-3 2.765×10-14 a1=0.4，b1=0.4 44.3 48.9 51.6 5.79×10-3 3.565×10-14 a1=0.4，b1=0.5 47.9 51.2 54.4 1.07×10-2 4.319×10-14 a1=0.5，b1=0.3 43.5 48.3 50.8 2.61×10-3 1.105×10-13 a1=0.5，b1=0.4 48.8 53.3 55.8 1.03×10-2 1.149×10-13 a1=0.5，b1=0.5 43.3 53.8 57.2 1.72×10-2 1.152×10-13 a1=0.6，b1=0.3 47 51.7 54 4.244×10-3 4.685×10-13 a1=0.6，b1=0.4 52.8 47.4 59.5 1.49×10-2 8.595×10-13 a1=0.6，b1=0.5 52.5 57.9 61.3 2.537×10-2 1.175×10-12 a1=0.7，b1=0.3 49.6 54.1 55.8 5.161×10-3 3.789×10-12 a1=0.7，b1=0.4 51.3 59.6 60.9 1.781×10-2 7.376×10-12 a1=0.7，b1=0.5 56.3 59.9 62.5 3.233×10-2 1.294×10-11
Table 4. Comparison of properties of different PCFs
View tableView in ArticleTable 4. Comparison of properties of different PCFs
Ref. Wavelength/μm Relative sensitivity/% Birefringence Confinement loss/（dB·m-1） Water Ethanol Benzyne ［ 1 ］1.5 9 12 13.5 10-3 10-1 ［ 17 ］1.5 — 29.5 — — 7.68×10-7 ［ 22 ］1.33 33 43.84 — 2.83×10-3 2.07×10-6 ［ 23 ］1.55 <54 <57 <61 — 2.26×10-3 ［ 10 ］1.3 49.13 — — 8×10-3 5.583×10-5 ［ 10 ］1.55 46 — — — — ［ 12 ］1.55 40 — — 3.1×10-3 — Proposed PCF 1.55 56.3 59.9 62.5 3.23×10-2 1.294×10-11
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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
Paper Information
Category: Research Articles
Received: Mar. 24, 2021
Accepted: --
Published Online: Apr. 18, 2022
The Author Email: Zhi-Niu XU (wzcnjxx@163.com)
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