Design of fiber magnetic field sensor based on fiber Bragg grating Fabry-Perot cavity ring-down spectroscopy

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• 作者：Qi Li (1)
  Haiyan Chen (1)
  
  1. School of Physics and Optoelectronic Engineering ; Yangtze University ; Jingzhou ; 434023 ; China
  
• 关键词：Fiber magnetic field sensor ; fiber Bragg grating ; Fabry ; Perot cavity ; cavity ring ; down spectroscopy
• 刊名：Photonic Sensors
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：5
• 期：2
• 页码：189-192
• 全文大小：314 KB
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  14. Chen, H, Chen, L, Chen, C, Wang, M, Li, Q, Huang, K (2014) Measurement of Er3+-doped concentration in optical fiber by using fiber Bragg grating Fabry-Perot cavity ring-down spectrum. Chinese Optics Letters 12: pp. s10603-1-s10603-2
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  16. Chen, H, Chen, C, Chen, L, Wang, M, Li, Q, Huang, K (2014) Response of fiber Bragg grating Fabry-Perot cavity to pulse laser injection. Chinese Journal of Lasers 41: pp. s105010-1-s105010-3
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Chinese Library of Science
  Laser Technology and Physics and Photonics
  Microwaves, RF and Optical Engineering
  Measurement Science and Instrumentation
  Optics, Optoelectronics, Plasmonics and Optical Devices
  
• 出版者：University of Electronic Science and Technology of China, co-published with Springer
• ISSN：2190-7439

文摘

A novel fiber magnetic sensor based on the fiber Bragg grating Fabry-Perot (FBG-FP) cavity ring-down technique with pulse laser injection is proposed and demonstrated theoretically. A general expression of the intensity of the output electric field is derived, and the effect of the external magnetic field on the ring-down time is discussed. The results show that the output light intensity and the ring-down time of the FBG-FP cavity are in the inverse proportion to the magnitude of the external magnetic field. Our results demonstrate the new concept of the fiber magnetic sensor with the FBG-FP cavity ring-down spectroscopy and the technical feasibility.