分布式光纤振动检测方案及应用

郎金鹏; 李韶光; 王建国; 毕宗义; 盛立文; 郭洪龙

doi:doi:10.3969/j.issn.1672-8785.2020.10.005

红外, 2020, 41 (10): 32, 网络出版: 2021-01-27

分布式光纤振动检测方案及应用

The Scheme and Application of Distributed Optical Fiber Vibration Sensing System

论文大纲

郎金鹏 ^*李韶光王建国毕宗义盛立文郭洪龙

作者单位

中电科仪器仪表有限公司，山东青岛 266555

振动光纤安全 vibration optical fiber safety

摘要

在分析网络通信安全需求的基础上，阐述了光纤传感技术和光缆状态实时监测技术对网络通信安全的保障作用。介绍了光纤传感技术的发展历史以及具有代表性的光纤传感器，然后介绍了分布式光纤振动传感系统的原理和工作方式，并对该系统的解调方法进行了分析。为了获得更高的信噪比，通过实验分析了数据解调中延迟差分对信噪比的影响。结果表明，在一定范围内，延迟时间与信噪比正相关。

Abstract

Based on the analysis of the requirement of network communication security, the safeguard effect of optical fiber sensing and real-time monitoring technology of fiber optic cable status for network communication security is expounded. Firstly, the development history of optical fiber sensing technology and the representative optical fiber sensors are introduced, then the principle and working mode of distributed optical fiber vibration sensing system are introduced. And the demodulation method of distributed optical fiber vibration sensing system is analyzed. In order to obtain a higher SNR, the effect of delay difference on SNR in the data demodulation is analyzed through experiments. The experimental results show that the delay time is positively correlated with the SNR in a certain range.

参考文献

[1] 刘微, 李靖. 分布式光纤光栅在管道检测中的应用[J]. 红外, 2008, 29(7): 37-39.

[2] 郎金鹏. 用于海底地震监测的光纤干涉型传感器解调方法研究[D]. 长春：吉林大学， 2017.

[3] 郎金鹏，常天英，陈建冬，等. 改进式相位生成载波调制解调方法[J]. 光子学报， 2016, 45（12）: 12070041-12070045.

[4] Cao D F, Shi B, Zhu H H, et al. Performance evaluation of two types of heated cables for distributed temperature sensing-based measurement of soil moisture content[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2016, 8: 212-217.

[5] Romeo B, Aldo M, Luigi Z. Dynamic strain measurement in optical fibers by stimulated brillouinscattering[J]. Optics Letters, 2009, 34(17): 2613-2615.

[6] 王茜, 刘永智, 彭增寿. 全光纤双传感臂微振动传感器[J]. 红外, 2007, 28(9): 9-12.

[7] 杨斌，皋魏，席刚, 等. 定位型超远全光纤周界安防系统[J]. 激光与光电子学进展， 2011， 48（5）: 60-66.

[8] 周正仙，肖石林，仝芳轩. 基于M-Z干涉原理的定位式光纤振动传感器[J]. 光通信研究， 2009, 34（5）: 67-70.

[9] Liu X, JIN B Q, Bai Q, et al. Distributed fiber-optic sensors for vibration detection[J]. Sensors,2016, 16(8): 1164.

[10] Alekseev A E, Vdoevnko V S, Gorshkov B G, et al. A phase-sensitive optical time-domain reflectometer with dual-pulse phase modulated probe signal[J]. Laser Physics, 2014, 24: 115106.

郎金鹏, 李韶光, 王建国, 毕宗义, 盛立文, 郭洪龙. 分布式光纤振动检测方案及应用[J]. 红外, 2020, 41(10): 32. LANG Jin-peng, LI Shao-guang, WANG Jian-guo, BI Zong-yi, SHENG Li-wen, GUO Hong-long. The Scheme and Application of Distributed Optical Fiber Vibration Sensing System[J]. INFRARED, 2020, 41(10): 32.

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