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Distributed Optical Fiber Sensors Based on Optical Frequency Domain Reflectometry: A review

by Zhenyang Ding 1,2,3,*, Chenhuan Wang 1,2,3, Kun Liu 1,2,3,*, Junfeng Jiang 1,2,3, Di Yang 1,2,3, Guanyi Pan 1, Zelin Pu 1 and Tiegen Liu 1,2,3
1
School of Precision Instrument & Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
2
Key Laboratory of Optoelectronics Information Technology, Ministry of Education, Tianjin 300072, China
3
Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin 300072, China
*
Authors to whom correspondence should be addressed.
Sensors 2018, 18(4), 1072; https://doi.org/10.3390/s18041072
Received: 14 January 2018 / Revised: 30 March 2018 / Accepted: 30 March 2018 / Published: 3 April 2018
(This article belongs to the Special Issue Optical Fiber Sensors 2017)
Distributed optical fiber sensors (DOFS) offer unprecedented features, the most unique one of which is the ability of monitoring variations of the physical and chemical parameters with spatial continuity along the fiber. Among all these distributed sensing techniques, optical frequency domain reflectometry (OFDR) has been given tremendous attention because of its high spatial resolution and large dynamic range. In addition, DOFS based on OFDR have been used to sense many parameters. In this review, we will survey the key technologies for improving sensing range, spatial resolution and sensing performance in DOFS based on OFDR. We also introduce the sensing mechanisms and the applications of DOFS based on OFDR including strain, stress, vibration, temperature, 3D shape, flow, refractive index, magnetic field, radiation, gas and so on. View Full-Text
Keywords: optical frequency domain reflectometry (OFDR); distributed optical fiber sensors; Rayleigh scattering; optical fiber sensors optical frequency domain reflectometry (OFDR); distributed optical fiber sensors; Rayleigh scattering; optical fiber sensors
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Ding, Z.; Wang, C.; Liu, K.; Jiang, J.; Yang, D.; Pan, G.; Pu, Z.; Liu, T. Distributed Optical Fiber Sensors Based on Optical Frequency Domain Reflectometry: A review. Sensors 2018, 18, 1072.

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