Ji-Sheng Zhang, Yong-Qian Li, Shuo Zhang, Li-Juan Zhao. Performance Analysis of Temperature and Strain Simultaneous Measurement System Based on Heterodyne Detection of Brillouin Scattering[J]. Journal of Electronic Science and Technology, 2008, 6(4): 381-384.
Citation: Ji-Sheng Zhang, Yong-Qian Li, Shuo Zhang, Li-Juan Zhao. Performance Analysis of Temperature and Strain Simultaneous Measurement System Based on Heterodyne Detection of Brillouin Scattering[J]. Journal of Electronic Science and Technology, 2008, 6(4): 381-384.

Performance Analysis of Temperature and Strain Simultaneous Measurement System Based on Heterodyne Detection of Brillouin Scattering

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This work was supported by Tthe National 863 ProgramT under Grant No. 2006AA09Z141, the Scientific Research Foundation for the Returned Overseas Chinese Scholars (Ministry of Education of China) under Grant No. 2005383, and the Scientific Research Foundation for the Returned Overseas Scholars (North China Electric Power University) under Grant No. 20041401.

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  • Author Bio:

    Ji-Sheng Zhang research interest is in the optical fiber sensing, zhangjisheng1@126.com;
    Yong-Qian Li, liyq@ncepubd.edu.cn;
    Shuo Zhang, dicky2008@163.com

    Ji-Sheng Zhang research interest is in the optical fiber sensing, zhangjisheng1@126.com;
    Yong-Qian Li, liyq@ncepubd.edu.cn;
    Shuo Zhang, dicky2008@163.com

    Ji-Sheng Zhang research interest is in the optical fiber sensing, zhangjisheng1@126.com;
    Yong-Qian Li, liyq@ncepubd.edu.cn;
    Shuo Zhang, dicky2008@163.com

  • Received Date: 2008-09-11
  • Rev Recd Date: 2008-10-11
  • Publish Date: 2008-12-24
  • Microwave heterodyne detection can be used to measure the temperature and strain distribution along a fiber with high accuracy in a Brillouin optical time domain reflectometry (BOTDR) system. This method involves simultaneous measurement of Brillouin scattering and Rayleigh scattering in fiber, and scanning of Brillouin spectrum to obtain the desired information. This paper presents a simultaneous measurement system of temperature and strain based on microwave detection and analyzed the system performances such as measurement accuracy, dynamic range, and spatial resolution theoretically. The analysis shows that the system can achieve a temperature resolution of 1℃ and a strain resolution of 100 .
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