Volume 29 Issue 4
Apr.  2003
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Su Guobin, Li Zheng. Optimal Method of Temperature Demodulation in DistributedFiber Temperature Sensor Based on Raman Rejection[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(4): 374-376. (in Chinese)
Citation: Su Guobin, Li Zheng. Optimal Method of Temperature Demodulation in DistributedFiber Temperature Sensor Based on Raman Rejection[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(4): 374-376. (in Chinese)

Optimal Method of Temperature Demodulation in DistributedFiber Temperature Sensor Based on Raman Rejection

  • Received Date: 10 Jun 2002
  • Publish Date: 30 Apr 2003
  • Raman back-scattering of distributed fiber temperature sensor is very weak, stokes and anti-stokes are colored by noise after O/E convertion and amplifying. This paper presents the optimal method of temperature demodulation in distributed fiber temperature sensor based on Raman rejection, in which stokes and anti-stokes data are colored by gauss noise. An optimal split ratio is obtained which can minimize the error of temperature measurement.

     

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  • [1] Dakin J P. Temperature distribution measurement using Raman ratio thermometry [J]. SPIE Fiber Optic and Laser Sensors, 1985,566:249~253 [2] 沈凤麟,钱玉美.信号统计分析基础[M].合肥:中国科学技术大学出版社,1989 Shen Fenglin, Qian Yumei. Basic theory of signal statistical analysis[M]. Hefei:Publishing House of University of Science and Technology of China, 1989(in Chinese) [3] 苏国彬,李 铮.基于喇曼散射的分布式光纤测温系统光接收机灵敏度的分析[J].航空学报,2001,22(增):103~105 Su Guobin,Li Zheng.The sensitivity evaluation of optical receiver in distributed fiber temperature sensor based on Raman rejection[J]. Acta Aeronautica et Astronautica Sinica, 2001,22(Sup):103~105(in Chinese)
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