Enhancing the performance of BOTDA sensing through introducing additional pre-exhausted wavelength

Hongyan Zhao, Yongjun Wang*, Qi Zhang, Feng Tian, Wenqing Tang, Tingting Yu, Xiangjun Xin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents and experimentally demonstrates a novel scheme of Brillouin optical time domain analysis (BOTDA) sensing system to ensure the encoded pulse waveform amplified from EDFA is flat. This system also can eliminate the noise by introducing additional pre-exhausted wavelength at the laser. The experiment results indicate that this dual-wavelength pump light scheme can easily shape the Lorenz curve between Brillouin gain spectrum(BGS) and scan frequencies without any extra processing, compared to normal BOTDA system with single-wavelength pump light. The new scheme can also improve the intensity of Brillouin signal about 50mV as well as the frequency shift accuracy is increased by 5MHz, which is benefit for increasing sensing range and measurement accuracy.

Original languageEnglish
Title of host publicationTenth International Conference on Information Optics and Photonics
EditorsYidong Huang
PublisherSPIE
ISBN (Electronic)9781510625792
DOIs
Publication statusPublished - 2018
Externally publishedYes
Event10th International Conference on Information Optics and Photonics - Beijing, China
Duration: 8 Jul 201811 Jul 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10964
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference10th International Conference on Information Optics and Photonics
Country/TerritoryChina
CityBeijing
Period8/07/1811/07/18

Keywords

  • BOTDA
  • EDFA transient effect
  • encoded pulse
  • pre-exhausted

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Cite this

Zhao, H., Wang, Y., Zhang, Q., Tian, F., Tang, W., Yu, T., & Xin, X. (2018). Enhancing the performance of BOTDA sensing through introducing additional pre-exhausted wavelength. In Y. Huang (Ed.), Tenth International Conference on Information Optics and Photonics Article 1096460 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10964). SPIE. https://doi.org/10.1117/12.2506480