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Ultra-Long-Distance Hybrid BOTDA/Ф-OTDR

In the distributed optical fiber sensing (DOFS) domain, simultaneous measurement of vibration and temperature/strain based on Rayleigh scattering and Brillouin scattering in fiber could have wide applications. However, there are certain challenges for the case of ultra-long sensing range, including...

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Detalles Bibliográficos
Autores principales: Fu, Yun, Wang, Zinan, Zhu, Richeng, Xue, Naitian, Jiang, Jialin, Lu, Chongyu, Zhang, Bin, Yang, Le, Atubga, David, Rao, Yunjiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5948708/
https://www.ncbi.nlm.nih.gov/pubmed/29587407
http://dx.doi.org/10.3390/s18040976
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author Fu, Yun
Wang, Zinan
Zhu, Richeng
Xue, Naitian
Jiang, Jialin
Lu, Chongyu
Zhang, Bin
Yang, Le
Atubga, David
Rao, Yunjiang
author_facet Fu, Yun
Wang, Zinan
Zhu, Richeng
Xue, Naitian
Jiang, Jialin
Lu, Chongyu
Zhang, Bin
Yang, Le
Atubga, David
Rao, Yunjiang
author_sort Fu, Yun
collection PubMed
description In the distributed optical fiber sensing (DOFS) domain, simultaneous measurement of vibration and temperature/strain based on Rayleigh scattering and Brillouin scattering in fiber could have wide applications. However, there are certain challenges for the case of ultra-long sensing range, including the interplay of different scattering mechanisms, the interaction of two types of sensing signals, and the competition of pump power. In this paper, a hybrid DOFS system, which can simultaneously measure temperature/strain and vibration over 150 km, is elaborately designed via integrating the Brillouin optical time-domain analyzer (BOTDA) and phase-sensitive optical time-domain reflectometry (Ф-OTDR). Distributed Raman and Brillouin amplifications, frequency division multiplexing (FDM), wavelength division multiplexing (WDM), and time division multiplexing (TDM) are delicately fused to accommodate ultra-long-distance BOTDA and Ф-OTDR. Consequently, the sensing range of the hybrid system is 150.62 km, and the spatial resolution of BOTDA and Ф-OTDR are 9 m and 30 m, respectively. The measurement uncertainty of the BOTDA is ± 0.82 MHz. To the best of our knowledge, this is the first time that such hybrid DOFS is realized with a hundred-kilometer length scale.
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spelling pubmed-59487082018-05-17 Ultra-Long-Distance Hybrid BOTDA/Ф-OTDR Fu, Yun Wang, Zinan Zhu, Richeng Xue, Naitian Jiang, Jialin Lu, Chongyu Zhang, Bin Yang, Le Atubga, David Rao, Yunjiang Sensors (Basel) Article In the distributed optical fiber sensing (DOFS) domain, simultaneous measurement of vibration and temperature/strain based on Rayleigh scattering and Brillouin scattering in fiber could have wide applications. However, there are certain challenges for the case of ultra-long sensing range, including the interplay of different scattering mechanisms, the interaction of two types of sensing signals, and the competition of pump power. In this paper, a hybrid DOFS system, which can simultaneously measure temperature/strain and vibration over 150 km, is elaborately designed via integrating the Brillouin optical time-domain analyzer (BOTDA) and phase-sensitive optical time-domain reflectometry (Ф-OTDR). Distributed Raman and Brillouin amplifications, frequency division multiplexing (FDM), wavelength division multiplexing (WDM), and time division multiplexing (TDM) are delicately fused to accommodate ultra-long-distance BOTDA and Ф-OTDR. Consequently, the sensing range of the hybrid system is 150.62 km, and the spatial resolution of BOTDA and Ф-OTDR are 9 m and 30 m, respectively. The measurement uncertainty of the BOTDA is ± 0.82 MHz. To the best of our knowledge, this is the first time that such hybrid DOFS is realized with a hundred-kilometer length scale. MDPI 2018-03-25 /pmc/articles/PMC5948708/ /pubmed/29587407 http://dx.doi.org/10.3390/s18040976 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Fu, Yun
Wang, Zinan
Zhu, Richeng
Xue, Naitian
Jiang, Jialin
Lu, Chongyu
Zhang, Bin
Yang, Le
Atubga, David
Rao, Yunjiang
Ultra-Long-Distance Hybrid BOTDA/Ф-OTDR
title Ultra-Long-Distance Hybrid BOTDA/Ф-OTDR
title_full Ultra-Long-Distance Hybrid BOTDA/Ф-OTDR
title_fullStr Ultra-Long-Distance Hybrid BOTDA/Ф-OTDR
title_full_unstemmed Ultra-Long-Distance Hybrid BOTDA/Ф-OTDR
title_short Ultra-Long-Distance Hybrid BOTDA/Ф-OTDR
title_sort ultra-long-distance hybrid botda/ф-otdr
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5948708/
https://www.ncbi.nlm.nih.gov/pubmed/29587407
http://dx.doi.org/10.3390/s18040976
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