激光与光电子学进展, 2020, 57 (19): 191203, 网络出版: 2020-09-27
基于光子晶体光纤四波混频效应的甲烷传感测量 
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Methane Sensing Measurement Based on Photonic Crystal Fiber Four-Wave Mixing Effect
图 & 表
图 1. 光子晶体光纤的截面结构和传感器实验原理图。(a)截面结构图;(b)传感器实验原理图
Fig. 1. Cross-section of PCF and experimental principle diagram of the sensor. (a) Cross-section of PCF; (b) experimental principle diagram of the sensor
图 2. β2、β4和γ随甲烷浓度的变化。(a) β2的变化;(b) β4的变化;(c) γ的变化
Fig. 2. Plots of the variations of β2, β4, and γ with methane concentrations. (a) Variation of β2; (b) variation of β4; (c) variation of γ
图 3. 斯托克斯光谱和反斯托克斯光谱气体浓度灵敏度曲线图。(a)不同甲烷浓度下的相位失配曲线图;(b) DFWM在泵浦波长附近的斯托克斯光谱和反斯托克斯光谱增益曲线图;(c)不同甲烷浓度下增益信号的峰值波长;(d)泵浦波长为1080 nm时,波长偏移与甲烷浓度之间的关系
Fig. 3. Gas-sensitivity graph of Stokes and anti-Stokes spectra。(a) Phase mismatch plots for different methane concentrations; (b) DFWM gain plot of the Stokes and anti-Stokes signals near the pump wavelength; (c) peak wavelength of the gain signal for different methane concentrations; (d) relationship between wavelength shift and methane concentrations at a pump wavelength of 1080 nm
图 4. 不同膜厚下的相位失配曲线以及斯托克斯光谱和反斯托克斯光谱增益曲线。(a)相位失配曲线;(b)斯托克斯光谱和反斯托克斯光谱增益曲线
Fig. 4. Phase mismatch plots as well as Stokes and anti-Stokes signal gain plots obtained at different film thicknesses. (a) Phase mismatch plots; (b) Stokes and anti-Stokes signal gain plots
图 5. 不同膜厚和不同甲烷浓度下的相位失配曲线以及斯托克斯光谱和反斯托克斯光谱增益曲线。(a)相位失配曲线;(b)斯托克斯光谱和反斯托克斯光谱增益曲线
Fig. 5. Phase mismatch plots as well as Stokes and anti-Stokes signal gain plots obtained at different film thicknesses and methane concentrations. (a) Phase mismatch plots; (b) Stokes and anti-Stokes signal gain plots
图 6. 不同泵浦波长下的相位失配曲线以及斯托克斯光谱和反斯托克斯光谱增益曲线。(a)相位失配曲线;(b)斯托克斯光谱和反斯托克斯光谱增益曲线
Fig. 6. Phase mismatch plots as well as Stokes and anti-Stokes signal gain plots obtained at different pump wavelengths. (a) Phase mismatch plots; (b) Stokes and anti-Stokes signal gain plots
图 7. 不同泵浦波长和甲烷浓度下的相位失配曲线以及斯托克斯光谱和反斯托克斯光谱增益曲线。(a)相位失配曲线;(b)斯托克斯光谱和反斯托克斯光谱增益曲线
Fig. 7. Phase mismatch plots as well as Stokes and anti-Stokes signal gain plots obtained at different pump wavelengths and methane concentrations. (a) Phase mismatch plots; (b) Stokes and anti-Stokes signal gain plots
图 8. 泵浦波长为1079 nm时的β2、β4、γ、κ、斯托克斯光谱和反斯托克斯光谱增益曲线、峰值移动曲线和灵敏度拟合曲线。(a) β2曲线;(b) β4曲线;(c) γ曲线;(d) κ曲线;(e)斯托克斯光谱和反斯托克斯光谱增益曲线;(f)峰值移动曲线; (g)灵敏度拟合曲线
Fig. 8. Plots of the variation of β2, β4, γ, κ, DFWM gain plot of the Stokes and anti-Stokes spectra, peak movement curves and sensitivity fitting curves at a pump wavelength of 1079 nm. (a) β2; (b) β4; (c) γ; (d) κ; (e) Stokes and anti-Stokes spectra gains plots; (f) peak movement curves; (g) sensitivity fitting curves
表 2光子晶体光纤传感器的比较
Table2. Comparison of photonic crystal fiber sensor
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刘海, 陈灿灿, 张文, 王浩然, 唐守锋. 基于光子晶体光纤四波混频效应的甲烷传感测量[J]. 激光与光电子学进展, 2020, 57(19): 191203. Hai Liu, Cancan Chen, Wen Zhang, Haoran Wang, Shoufeng Tang. Methane Sensing Measurement Based on Photonic Crystal Fiber Four-Wave Mixing Effect[J]. Laser & Optoelectronics Progress, 2020, 57(19): 191203.
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