Continuous chirped-wave phase-sensitive optical time domain reflectometry

Jiang Jialin; Wang Zinan; Wang Zitan; Qiu Zijie; Liu Chunye; Rao Yunjiang

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Continuous chirped-wave phase-sensitive optical time domain reflectometry

机译：连续啁啾波相位敏光学时域反射率

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This Letter proposes a novel phase-sensitive optical time domain reflectometry (Phi-OTDR) with continuous chirpedwave (CCW), which can make full use of both time and frequency domain resources. The principle and benefits of CCW Phi-OTDR are elaborated. With the merit of CCW Phi-OTDR, 1.042 MHz sensing bandwidth and 5 p epsilon root Hz strain sensitivity are achieved along a 1013 m fiber with 4.4 m spatial resolution. To the best of the authors' knowledge, this is the first time that Phi-OTDR achieves megahertz sensing bandwidth with metric spatial resolution, and without limiting the frequency feature of the disturbance. The good performance in long-range sensing is also verified over a 49.7 km fiber. More than that, the digital domain flexibility of the proposed scheme can be used to optimize the measured acoustic signal according to its feature and the practical needs. (C) 2021 Optical Society of America

机译：本文提出了一种新的相位敏感连续啁啾光时域反射计（Phi OTDR），它可以充分利用时域和频域资源。阐述了CCW Phi OTDR的原理和优点。利用CCW Phi OTDR的优点，在空间分辨率为4.4m的1013m光纤上实现了1.042mhz的传感带宽和5pε根Hz的应变灵敏度。据作者所知，这是Phi OTDR首次在不限制干扰频率特性的情况下，以公制空间分辨率实现兆赫传感带宽。在49.7公里长的光纤上，也验证了其在远程传感方面的良好性能。此外，该方案的数字域灵活性可用于根据被测声信号的特点和实际需要对其进行优化。（2021）美国光学学会

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来源
《Optics Letters》 |2021年第3期|共4页
作者
Jiang Jialin; Wang Zinan; Wang Zitan; Qiu Zijie; Liu Chunye; Rao Yunjiang;
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作者单位

Univ Elect Sci &

Technol China UESTC Key Lab Opt Fiber Sensing &

Commun Chengdu Peoples R China;

Univ Elect Sci &

Technol China UESTC Key Lab Opt Fiber Sensing &

Commun Chengdu Peoples R China;

Univ Elect Sci &

Technol China UESTC Key Lab Opt Fiber Sensing &

Commun Chengdu Peoples R China;

Univ Elect Sci &

Technol China UESTC Key Lab Opt Fiber Sensing &

Commun Chengdu Peoples R China;

Univ Elect Sci &

Technol China UESTC Key Lab Opt Fiber Sensing &

Commun Chengdu Peoples R China;

Univ Elect Sci &

Technol China UESTC Key Lab Opt Fiber Sensing &

Commun Chengdu Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类计量学;光学;
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1. Time-expanded phase-sensitive optical time-domain reflectometry [J] . Miguel Soriano-Amat, Hugo F.Martins, Vicente Durán, 光：科学与应用（英文版） . 2021,第003期
2. Recent Advances in Phase-Sensitive Optical Time Domain Reflectometry(Φ-OTDR) [J] . Yunjiang RAO, Zinan WANG, Huijuan WU, 光子传感器（英文版） . 2021,第001期
3. Recent Advances in Phase-Sensitive Optical Time Domain Reflectometry (Ф-OTDR) [J] . Yunjiang RAO, Zinan WANG, Huijuan WU, 光子传感器：英文版 . 2021,第001期
4. Phase-Sensitive Optical Time-Domain Reflectometry Amplified by Gated Raman Pump [J] . Yi LI, Yi ZHOU, Li ZHANG, 光子传感器：英文版 . 2015,第004期
5. Phase-Sensitive Optical Time-Domain Reflectometer Based on a 120°-Phase-Difference Michelson Interferometer [J] . Yu-Long Cao, Fei Yang, Dan Xu, 中国物理快报：英文版 . 2016,第005期
6. Continuous chirped-wave phase-sensitive optical time domain reflectometry (vol 46, pg 685, 2021) [J] . Jiang Jialin, Wang Zinan, Wang Zitan, Optics Letters . 2021,第5期

机译：连续啁啾波相位敏光学时域反射测量仪（VOL 46，PG 685,2021）
7. Distributed detection of hydrogen and deuterium diffusion into a single-mode optical fiber with chirped-pulse phase-sensitive optical time-domain reflectometry [J] . Garcia-Ruiz A., Morana A., Costa L., Optics Letters . 2019,第21期

机译：具有啁啾脉冲相敏光学时域反射测量法的单模光纤分布式检测氢气和氘扩散到单模光纤中
8. SNR Enhancement of Far-End Disturbances on Distributed Sensor Based on Phase-Sensitive Optical Time-Domain Reflectometry [J] . Dandan Li, Shuqin Lou, Qi Xin, Sensors Journal, IEEE . 2021,第2期

机译：基于相敏光学时域反射测量的分布式传感器的远端干扰SNR增强
9. Field test for real-time position and speed monitoring of trains using phase-sensitive optical time domain reflectometry (Φ-OTDR) [C] . Ning Duan, Fei Peng, Yun-Jiang Rao, International Conference on Optical Fibre Sensors . 2014

机译：使用相敏感的光学时域反射仪（Φ-OTDR）对列车进行实时位置和速度监控的现场测试
10. Distributed Fiber Optic Sensors for Monitoring Spatially Continuous Strain and Quasi-Distributed Refractive Index Using Optical Frequency Domain Reflectometry [D] . Jothibasu, Sasi. 2018

机译：分布式光纤传感器，用于使用光学频率域反射测量监测空间连续应变和准分布折射率
11. Time-expanded phase-sensitive optical time-domain reflectometry [O] . Miguel Soriano-Amat, Hugo F. Martins, Vicente Durán, 2021

机译：时间膨胀的相敏光学时域反射仪
12. Recent Advances in Phase-Sensitive Optical Time Domain Reflectometry (Ф-OTDR) [O] . Yunjiang Rao, Zinan Wang, Huijuan Wu, 2021

机译：相位敏感光学时域反射仪（Ф-OTDR）的最新进展
13. Continuous liquid level measurements with time domain reflectometry [R] . Cruz, J. E., Rogers, E. H., Hiester, A. E. 1972

机译：使用时域反射计进行连续液位测量

Continuous chirped-wave phase-sensitive optical time domain reflectometry

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