Chaos Raman distributed optical fiber sensing

Chenyi Wang; Jian Li; Xinxin Zhou; Zijia Cheng; Lijun Qiao; Xiaohui Xue; Mingjiang Zhang

doi:10.1038/s41377-023-01267-3

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Chaos Raman distributed optical fiber sensing

Original Articles

- Chaos Raman distributed optical fiber sensing
- Chaos Raman distributed optical fiber sensing
- LSA 2023年12卷第10期页码：2105-2121
- Affiliations：
  
  1.College of Physics, Taiyuan University of Technology, Taiyuan 030024 Shanxi, China
  2.Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024 Shanxi, China
  3.College of Electrical Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024 Shanxi, China
  4.Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030032 Shanxi, China
- Author bio：
  
  Jian Li (lijian02@tyut.edu.cn)
  Mingjiang Zhang (zhangmingjiang@tyut.edu.cn)
- Funds：
- DOI：10.1038/s41377-023-01267-3
  中图分类号：
- 纸质出版日期：2023-10-31，
  
  网络出版日期：2023-08-31，
  
  收稿日期：2022-11-22，
  
  修回日期：2023-07-14，
  
  录用日期：2023-08-18
- Accepted：
Scan QR Code
Chaos Raman distributed optical fiber sensing[J]. LSA, 2023,12(10):2105-2121.

Wang, C. Y. et al. Chaos Raman distributed optical fiber sensing. Light: Science & Applications, 12, 2105-2121 (2023).
Chaos Raman distributed optical fiber sensing[J]. LSA, 2023,12(10):2105-2121. DOI： 10.1038/s41377-023-01267-3.

Wang, C. Y. et al. Chaos Raman distributed optical fiber sensing. Light: Science & Applications, 12, 2105-2121 (2023). DOI： 10.1038/s41377-023-01267-3.

摘要

Abstract

The physics principle of pulse flight positioning is the main theoretical bottleneck that restricts the spatial resolution of the existing Raman distributed optical fiber sensing scheme. Owing to the pulse width of tens of nanoseconds

the spatial resolution of the existing Raman distributed optical fiber sensing scheme with kilometer-level sensing distance is limited to the meter level

which seriously restricts the development of the optical time-domain reflection system. In this paper

a chaos laser is proposed in the context of the physical principle of the Raman scattering effect

and a novel theory of chaos Raman distributed optical fiber sensing scheme is presented. The scheme reveals the characteristics of chaos Raman scattering light excited by a chaotic signal on the sensing fiber. Further

the chaos time-domain compression demodulation mechanism between the temperature variation information and chaos correlation peak is demonstrated. Then

the position of the temperature variation signal is precisely located using the delay time of the chaos correlation peak combined with the chaos pulse flight time. Based on this novel optical sensing mechanism

an experiment with 10 cm spatial resolution and 1.4 km sensing distance was conducted

and the spatial resolution was found to be independent of the sensing distance. Within the limit of the existing spatial resolution theory

the spatial resolution of the proposed scheme is 50 times higher than that of the traditional scheme. The scheme also provides a new research direction for optical chaos and optical fiber sensing.

关键词

Keywords

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