Journal of Applied Sciences ›› 2021, Vol. 39 ›› Issue (5): 843-857.doi: 10.3969/j.issn.0255-8297.2021.05.009

• Optical Fiber Sensors Technology • Previous Articles     Next Articles

Review of Distributed Optical Fiber Sensing Technology

SHANG Ying1, WANG Chang2   

  1. 1. Laser Institute, Qilu University of Technology(Shandong Academy of Sciences), Jinan 250014, Shandong, China;
    2. International College of Optoelectronic Engineering, Qilu University of Technology, Jinan 250014, Shandong, China
  • Received:2021-05-19 Published:2021-10-11

Abstract: Distributed optical fiber sensing technology is an important part in the field of optical fiber sensing. Sensing fibers which integrate sensing and transmission functions enable long-distance and large-scale sensing and networking. Distributed optical fiber sensing technology can continuously sense the spatial distribution and change information of physical parameters such as temperature, strain, and vibration along the optical fiber. Sensing information of up to tens of thousands of points along the fiber can be obtained. This article reviews the current domestic and foreign developments of distributed optical fiber sensing technologies, especially focusing on the advantages and disadvantages of distributed sensing technologies based on Rayleigh backscattering and interference.

Key words: distributed optical fiber sensing, strain, vibration, Rayleigh, interference

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