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Improved low concentration gas detection system based on intracavity fiber laser

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Zhang, Hongxia, Liu, Kun, Jia, Dagong, Xu, Tianhua, Liu, Tiegen, Peng, Gangding, Jing, Wencai and Zhang, Yimo (2011) Improved low concentration gas detection system based on intracavity fiber laser. Review of Scientific Instruments, 82 (2). 023104. doi:10.1063/1.3534077

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Official URL: http://dx.doi.org/10.1063/1.3534077

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Abstract

The improvement of a low concentration gas detection system based on the intracavity fiber laser is proposed in this paper. The sensitivity of the system is deduced based on Lambert–Beer law. The optimized system was established with the gas cell made elaborately. In order to apply the wavelength sweeping technique, the fiber Bragg grating reflector was substituted by the wavelength independent Faraday rotation reflector. The sensitivity of the system for acetylene detection is reduced to less than 100 ppm by using the average of three absorption spectra. The acetylene detection coefficients of variation with different concentrations are measured. The gas measurement system is validated to detect low concentration gas effectively.

Item Type: Journal Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Gas detectors , Optical fiber detectors
Journal or Publication Title: Review of Scientific Instruments
Publisher: American Institute of Physics
ISSN: 0034-6748
Official Date: 2011
Dates:
DateEvent
2011Published
Volume: 82
Number: 2
Article Number: 023104
DOI: 10.1063/1.3534077
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
200800561022Ministry of Education of the People's Republic of Chinahttp://dx.doi.org/10.13039/501100002338
20090460690China Postdoctoral Science Foundationhttp://dx.doi.org/10.13039/501100002858
2010CB327806Ministry of Science and Technology of the People's Republic of Chinahttp://dx.doi.org/10.13039/501100002855
2010CB327802Ministry of Science and Technology of the People's Republic of Chinahttp://dx.doi.org/10.13039/501100002855

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