CHU Yan-ping, ZHANG Jing-chao, GUAN Li-jun, XIAO Chang-jiang. Double gas-cell detection system for gases[J]. Journal of Applied Optics, 2008, 29(3): 390-393.
Citation: CHU Yan-ping, ZHANG Jing-chao, GUAN Li-jun, XIAO Chang-jiang. Double gas-cell detection system for gases[J]. Journal of Applied Optics, 2008, 29(3): 390-393.

Double gas-cell detection system for gases

More Information
  • Corresponding author:

    CHU Yan-ping

  • An optical fiber gas detection system with two gas cells was developed based on the near infrared absorption mechanism of gases. A Light emitting diode is used as a broadband light source. The wavelength of the LED is modulated by the fiber grating and piezoelectric ceramics to obtain the narrowband reflection output light corresponding to gas absorption peak, and then the high sensitivity detection of gas density can be realized by the detection of the second harmonic. The influence of the beam path interference on the detection accuracy, the variation of absorption coefficient with the environment and the fluctuation of the luminous power were eliminated by the ratio of the two secondharmonic signals from both the measurement and the reference gas cells. The detection experiment for CH4 was implemented by the system. Experiment indicates that the measurement sensitivity of the system is 0.2×10-6.
  • Related Articles

    [1]HU Jingsen, HUANG Min, GAO Han. Error analysis on dihedral angle of corner-cube reflectors in Fourier transform spectrometer[J]. Journal of Applied Optics, 2022, 43(5): 959-966. DOI: 10.5768/JAO202243.0503005
    [2]ZHANG Wenying, ZHU Haoran. Error analysis and correction of circular grating angle measurement system[J]. Journal of Applied Optics, 2019, 40(3): 399-403. DOI: 10.5768/JAO201940.0301007
    [3]HAO Renjie, WANG Zhongyu, LI Yaru. Error analysis method for monocular vision pose measurement system[J]. Journal of Applied Optics, 2019, 40(1): 79-85. DOI: 10.5768/JAO201940.0103001
    [4]Chen Zhibin, Fan Lei, Xiao Wenjian, Qin Mengze, Xiao Cheng, Zhang Dongxiao. Directional error analysis of 2D galvanometer scanning system[J]. Journal of Applied Optics, 2018, 39(2): 180-186. DOI: 10.5768/JAO201839.0201004
    [5]Peng Fu-lun, Wang Jing, Wu Yi-lei, Guo Cheng. Object positioning and error analysis of vehicular electro-optical reconnaissance system[J]. Journal of Applied Optics, 2014, 35(4): 557-562.
    [6]ZHAO Huai-xue, ZHAO Jian-ke, TIAN Liu-de, DUAN Jiong. Detection method of random error for dynamic measurement accuracy of photoelectric theodolite[J]. Journal of Applied Optics, 2013, 34(6): 1010-1013.
    [7]LI Qiang, LIU Ang, GAO Bo, XU Kai-yuan, CHAI Li-qun. Error analysis of absolute test method of inhomogeneity of optical materials[J]. Journal of Applied Optics, 2013, 34(3): 463-468.
    [8]CHANG Fang-Fei, ZHANG Zhi-Min. Error analysis of common iterative reconstruction algorithmsin optical chromatographic technique[J]. Journal of Applied Optics, 2009, 30(4): 616-621.
    [9]WANG Ke-wei, MA Chao-jie, CHEN Wei, ZHANG Fan. Error analysis for gate centroid tracking algorithm of infrared imaging[J]. Journal of Applied Optics, 2009, 30(2): 353-356.
    [10]DU Jun-feng. Error budget design for photoelectric theodolite[J]. Journal of Applied Optics, 2006, 27(6): 506-509.

Catalog

    Article views (3129) PDF downloads (1162) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return