Continuous-Wave Frequency-Shifted Interferometry Cavity Ring-Down Gas Sensing With Differential Optical Absorption
Continuous-Wave Frequency-Shifted Interferometry Cavity Ring-Down Gas Sensing With Differential Optical Absorption
复制标题
具有差分光学吸收的连续波频移干涉腔衰荡气体传感
DOI：
10.1109/jphot.2015.2423559
复制
发表时间：
2015-04
影响因子：
2.4
通讯作者：
Li M. M.
中科院分区：
文献类型：
--
作者：
Tian H.;Zhou C. M.;Fan D.;Ou Y. W.;Tian T.;Liang W. L.;Li M. M.
本文提出了一种具有双波长差分光吸收的新型移频干涉（FSI）光纤腔衰荡（CRD）气体传感技术，该技术不需要对连续波源进行调制，也不需要快速检测和开关电子器件。所述光纤腔由标准光纤元件构成，其中包括微光气体电池。FSI-CRD实验在1531.770 nm和1532.000 nm两个波长下进行。该技术通过测量乙炔浓度为0% ~ 1.0%的乙炔-氮混合物，取得了成功。分辨率为7.8125%/dB。最小可检测的乙炔浓度为105.25 ppm，达到了48毫米的气体电池。结果表明，乙炔浓度与吸光损失呈良好的线性关系，与已有理论基本一致。双波长差分光吸收可以有效地提高测量精度，消除各种外部因素的影响。当乙炔浓度为1.0%时，测量时间超过70 min，测量浓度的相对偏差小于±0.29%。
This paper proposes a novel frequency-shifted interferometry (FSI) fiber cavity ring-down (CRD) gas sensing with dual-wavelength differential optical absorption that requires no modulation to a continuous-wave source or without fast detection and switching electronics. The fiber cavity is constructed from standard fiber optical components that include a micro-optical gas cell. FSI-CRD experiments are carried out with two wavelengths at 1531.770 and 1532.000 nm. The technique is successfully carried out by measuring acetylene-nitrogen mixtures with acetylene concentrations varying from 0% to 1.0%. A resolution of 7.8125%/dB is obtained. A minimum detectable acetylene concentration of 105.25 ppm was achieved with a 48-mm gas cell. The results show a good linear relationship between acetylene concentration and absorption loss and are in good agreement with existing theories. Dual-wavelength differential optical absorption can enhance measurement precision efficiently and eliminate the influence of various external factors. The relative deviation of measured concentration is less than ±0.29%, measured at 1.0% acetylene concentration over 70 min.
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影响因子：
4.3
作者：
Ya‐nan Zhang;Yong Zhao;Di Wu;Qi Wang
通讯作者：
Ya‐nan Zhang;Yong Zhao;Di Wu;Qi Wang
影响因子：
1.9
作者：
R. V. van Zee;J. Hodges;J. Looney
通讯作者：
R. V. van Zee;J. Hodges;J. Looney
影响因子：
1.9
作者：
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通讯作者：
MASSER, CS
DOI：
10.1016/j.jqsrt.2013.07.002
发表时间：
2013-11-01
影响因子：
2.3
作者：
Rothman, L. S.;Gordon, I. E.;Wagner, G.
通讯作者：
Wagner, G.
影响因子：
3.8
作者：
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通讯作者：
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