Real-time distributed all-fiber strain-sensing system

  • Authors:

  • Yiming Zhong;Qing Shi;Tongtong Zhang;Shutong Zhou;Fuyun Lv

  • Affiliations:

  • Nankai University, Tianjin, P.R. China;Nankai University, Tianjin, P.R. China;Nankai University, Tianjin, P.R. China;Nankai University, Tianjin, P.R. China;Nankai University, Tianjin, P.R. China

  • Venue:
  • ICAIT '08 Proceedings of the 2008 International Conference on Advanced Infocomm Technology
  • Year:
  • 2008

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Abstract

This work presents a real-time distributed all-fiber strain-sensing system based on Fabry-Perot (F-P) interferometric sensors using hollow-core photonic band-gap fiber (HCPBF), which is demodulated by Fast Fourier Transform and the signals are detected through GPIB access utilizing LabVIEW software. The difference of pulse shifts to different sensors makes possible a simple and direct method of measuring the cavity length of HCPBF sensors, which in turn can be used to measure phase change and the corresponding strain. Based on a various advantages of HCPBF, the system holds an improved performance on high sensitivity and real-time measurement.