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

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 reflec...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2018-04, Vol.18 (4), p.1072
Main Authors: Ding, Zhenyang, Wang, Chenhuan, Liu, Kun, Jiang, Junfeng, Yang, Di, Pan, Guanyi, Pu, Zelin, Liu, Tiegen
Format: Article
Language:English
Subjects:
distributed optical fiber sensors
optical fiber sensors
Optical fibers
Optical frequency
optical frequency domain reflectometry (OFDR)
Rayleigh scattering
Refractivity
Review
Sensors
Spatial resolution
Three dimensional flow
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Summary: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.
ISSN:1424-8220
1424-8220
DOI:10.3390/s18041072