Optoelectronics Letters, Volume. 9, Issue 4, 313(2013)

Measurement of air pollutants by differential optical absorption spectroscopy using a Cassegrain telescope with fibers

Hong-lian LI1...2,3, Yong-jie WEI4,*, Yan-xia HOU1,2, and Wen-liang CHEN12 |Show fewer author(s)
Author Affiliations
  • 1State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
  • 2Key Laboratory of Micro-Opto-Electro-Mechanical System Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
  • 3College of Quality & Technical Supervision, Hebei University, Baoding 071002, China
  • 4School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
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    A differential optical absorption spectroscopy (DOAS) method is presented and used for the air pollutant detection. The novel measurement frame employs a Cassegrain telescope and a combined fiber bundle. The emitting and receiving fibers are bundled together at one port. The common port is placed at the focus of the Cassegrain telescope. The total length of the prototype is reduced to about 1/2 of the traditional one. Air pollutants of SO2, NO2 and O3 are monitored by the prototype, and the concentrations are inverted. Results show that the correlation coefficients are 0.9490, 0.9614 and 0.9301, respectively. And there is a good consistency between the measured results and the reference data.

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    LI Hong-lian, WEI Yong-jie, HOU Yan-xia, CHEN Wen-liang. Measurement of air pollutants by differential optical absorption spectroscopy using a Cassegrain telescope with fibers[J]. Optoelectronics Letters, 2013, 9(4): 313

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    Paper Information

    Received: Mar. 12, 2013

    Accepted: --

    Published Online: Oct. 12, 2017

    The Author Email: Yong-jie WEI (yj.wei@163.com)

    DOI:10.1007/s11801-013-3039-x

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