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Research on distributed intrinsic Fabry-Perot sensors

Gui Xin Hu Chen-Chen Xie Ying Li Zheng-Ying

Research on distributed intrinsic Fabry-Perot sensors

Gui Xin, Hu Chen-Chen, Xie Ying, Li Zheng-Ying
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Publishing process
  • Received Date:  29 August 2014
  • Accepted Date:  26 September 2014
  • Published Online:  05 March 2015

Research on distributed intrinsic Fabry-Perot sensors

  • 1. National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China;
  • 2. Key Laboratory of Fiber Optic Sensing Technology and Information Processing, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 61290311, 61205072) and the Natural Science Foundation of Hubei Province of China (Grant No. ZRZ019).

Abstract: This paper introduces a kind of single mode-multimode-single mode intrinsic Fabry-Perot interferometer (SMS-IFPI). We optimize the sensing length of the graded-index multimode fiber (GI-MMF), insertion loss, and multiplexing capability through the analysis and simulation of the optical field distribution in the GI-MMF. Experiment proves that the insertion loss of a single sensing unit from the optimized cascade SMS-IFPI may be decreased from 4 dB to 0.83 dB. Testing the response characteristics of SMS-IFPI temperature sensors in the distribution under the condition of different temperature, the experimental results show that each SMS-IFPI can have better sensitivity and linearity.

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