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Photonic Sensors

, Volume 7, Issue 3, pp 261–269 | Cite as

Research on multi-component gas optical detection system based on conjugated interferometer

  • Xin Gui
  • Yuheng Tong
  • Honghai Wang
  • Haihu Yu
  • Zhengying Li
Open Access
Regular
  • 375 Downloads

Abstract

An optical multi-component gas detection system based on the conjugated interferometer (CI) is proposed and experimentally demonstrated. It can realize the concentration detection of mixture gas in the environment. The CI can transform the absorption spectrum of the target gases to a conjugated emission spectrum, when combining the CI with the broadband light source, the spectrum of output light matches well with the absorption spectrum of target gases. The CI design for different target gases can be achieved by replacing the kind of target absorbing gas in the CI filter. Traditional fiber gas sensor system requires multiple light sources for detection when there are several kinds of gases, and this problem has been solved by using the CI filter combined with the broadband light source. The experimental results show that the system can detect the concentration of multi-component gases, which are mixed with C2H2 and NH3. Experimental results also show a good concentration sensing linearity.

Keywords

Gas conjugated interference filter gas sensing spectral absorption 

Notes

Acknowledgment

This research was supported by the Natural National Science Foundation of China, NSFC (Grant No. 61575149, 61290311), and the Major Project of Hubei Technological Innovation Special Fund (2016AAA008).

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Copyright information

© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Xin Gui
    • 1
  • Yuheng Tong
    • 2
  • Honghai Wang
    • 1
  • Haihu Yu
    • 1
  • Zhengying Li
    • 1
    • 2
  1. 1.National Engineering Laboratory for Fiber Optic Sensing TechnologyWuhan University of TechnologyWuhanChina
  2. 2.Key Laboratory of Fiber Optic Sensing Technology and Information Processing, Ministry of EducationWuhan University of TechnologyWuhanChina

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