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Design and Analysis of a Gas Sensor Based on a Ring Multi-Wavelength Fiber Laser in Near Infrared

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Abstract

Numerical model of a gas sensor based on the ring multi-wavelength fiber laser is discussed to detect gas such as methane (CH4), which has multi-line absorption in near infrared. The schematic of the gas sensor is given, and its detecting principle of multiple windows is demonstrated in detail. The detecting methods based on the differential method and the second harmonic wave method in the sensor are analyzed, and the optimal information syncretions are used to process the information of the detected gas. The analyzing results show the sensor has advantages over the traditional sensor, and can be expanded to detect other gas such as acetylene (C2H4).

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Acknowledgement

The authors undertook this work with the supports of the Fund of Natural Science of Hubei Province under Grant No. 2004ABA112, and the Research Program of The Hong Kong Polytechnic University under Grant No. A-PA2Q.

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Authors and Affiliations

  1. Hubei Key Laboratory of Bioanalytical Technique, Hubei Normal University, Huangshi, 435002, People’s Republic of China

    Hong Li

  2. School of Mechanical and Electronic Engineering, Huangshi Institute of Technology, Huangshi, 435003, People’s Republic of China

    Hong Li

  3. Department of Electrical Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People’s Republic of China

    D. N. Wang

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  1. Hong Li
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  2. D. N. Wang
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Correspondence to Hong Li.

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Li, H., Wang, D.N. Design and Analysis of a Gas Sensor Based on a Ring Multi-Wavelength Fiber Laser in Near Infrared. Int J Infrared Milli Waves 28, 403–412 (2007). https://doi.org/10.1007/s10762-007-9211-2

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  • DOI: https://doi.org/10.1007/s10762-007-9211-2

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