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基于内调制啁啾脉冲的高信噪比低成本直接探测型φ-OTDR系统

Internally Modulated Chirped Pulse Based Direct Detection Type φ-OTDR System with High Signal-to-Noise Ratio and Low Cost

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摘要

提出一种新型的基于内调制啁啾脉冲的高信噪比(SNR)直接探测型相位敏感光时域反射计(φ-OTDR)。通过理论分析可得,利用啁啾脉冲的方法并通过提高受激布里渊阈值可提高注入光能量,提高探测信号中的直流分量可使信号与噪声分离,进而提升SNR。提出一种φ-OTDR系统信噪比的综合评判方法,对SNR的统计特性进行分析。同时,开展了基于分布式反馈激光器的内调制直接探测型φ-OTDR系统实验研究,利用可调谐滤波器对内调制产生的频率啁啾范围进行控制,经对比实验验证,可得所提系统与传统φ-OTDR系统的信噪比期望相当,分布方差更小,测量可靠度更高的结论。此外,该系统还具有成本低、结构简单等优点,实际应用时可以利用光纤布拉格光栅代替可调谐滤波器,提升其应用的灵活性,为工程应用提供新的解决方案。

Abstract

This paper proposes an internally modulated chirped pulse based direct detection type phase sensitive time domain reflectometer (φ-OTDR) system with high signal-to-noise ratio (SNR). Based on theoretical analysis, we find that the stimulated Brillouin threshold increases with the increasing injection pulse energy, the high direct current component of the detection signal keeps the signal and noise separate, and the SNR can be enhanced. Then a statistical evaluation method is proposed to calculate the SNR of the sensing system. Meanwhile, an internally modulated direct detection type φ-OTDR system based on the distributed feedback laser is experimentally studied. The frequency chirp range introduced by internal modulation is controlled by the tunable filter. Compared with the traditional φ-OTDR system, the proposed system can obtain similar SNR and smaller distribution variance and realize higher measurement reliability. Additionally, The proposed system has the advantages of low cost and small volume, and the tunable filter can be replaced by fiber Bragg grating in practical application. It can improve the flexibility of application and provide a new idea for engineering.

Newport宣传-MKS新实验室计划
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DOI:10.3788/CJL201946.0806003

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金、国家重点研发计划、上海市自然科学基金、上海市科技委员会;

收稿日期:2019-03-14

修改稿日期:2019-04-12

网络出版日期:2019-08-01

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李鲁川:上海大学特种光纤与光接入网省部共建重点实验室培育基地, 上海 200444中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800
卢斌:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800
王校:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049
梁嘉靖:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049
郑汉荣:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049
王照勇:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800
叶青:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049
方祖捷:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800
庞拂飞:上海大学特种光纤与光接入网省部共建重点实验室培育基地, 上海 200444
蔡海文:中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049

联系人作者:卢斌(lubin@siom.ac.cn); 蔡海文( lubin@siom.ac.cn);

备注:国家自然科学基金、国家重点研发计划、上海市自然科学基金、上海市科技委员会;

【1】Masoudi A and Newson T P. Contributed review: distributed optical fibre dynamic strain sensing. Review of Scientific Instruments. 87(1), (2016).

【2】Ye Q, Pan Z Q, Wang Z Y et al. Progress of research and applications of phase-sensitive optical time domain reflectometry. Chinese Journal of Lasers. 44(6), (2017).
叶青, 潘政清, 王照勇 等. 相位敏感光时域反射仪研究和应用进展. 中国激光. 44(6), (2017).

【3】Tarlor H F and Lee C E. Apparatus. -03-16[2019-03-01]. https:∥patents.glgoo.top/patent/US5194847A/en. (1993).

【4】Pan Z Q, Liang K Z, Ye Q et al. Phase-sensitive OTDR system based on digital coherent detection. [C]∥Optical Sensors and Biophotonics, November 13-16, 2011, Shanghai. Washington, D. C.: OSA. 83110S, (2011).

【5】He X G, Liu F, Qin M Z et al. Phase-sensitive optical time-domain reflectometry with heterodyne demodulation. Proceedings of SPIE. 70323, (2017).

【6】Masoudi A, Belal M and Newson P. A distributed optical fibre dynamic strain sensor based on phase-OTDR. Measurement Science and Technology. 24(8), (2013).

【7】Tu G J, Zhang X P, Zhang Y X et al. The development of an Φ-OTDR system for quantitative vibration measurement. IEEE Photonics Technology Letters. 27(12), 1349-1352(2015).

【8】Wang K. Research on the practical technique of multifunctional optical fiber security monitoring system based on the phase-sensitve OTDR. Shanghai: Donghua University. 32-48(2015).
王坤. 基于相位敏感光时域反射计的多功能光纤安防系统实用化技术研究. 上海: 东华大学. 32-48(2015).

【9】Martins H F, Martin-Lopez S, Corredera P et al. Distributed vibration sensing over 125 km with enhanced SNR using phi-OTDR over a URFL cavity. Journal of Lightwave Technology. 33(12), 2628-2632(2015).

【10】Yang G Y, Fan X Y, Liu Q W et al. Frequency response enhancement of direct-detection phase-sensitive OTDR by using frequency division multiplexing. Journal of Lightwave Technology. 36(4), 1197-1203(2018).

【11】Wu M S, Fan X Y, Liu Q W et al. Highly sensitive quasi-distributed fiber-optic acoustic sensing system by interrogating a weak reflector array. Optics Letters. 43(15), 3594-3597(2018).

【12】Liu J W. Research on the dynamic tuning characteristics of DFB lasers and its measurement methods. Tianjin: Tianjin University. 38-44(2012).
刘景旺. DFB激光器的调谐动态特性及测量方法研究. 天津: 天津大学. 38-44(2012).

【13】Duan H. The response characteristics of semiconductor lasers based on rate equations. Qinhuangdao: Yanshan University. 21-51(2010).
段慧. 基于速率方程的半导体激光器响应特性研究. 秦皇岛: 燕山大学. 21-51(2010).

【14】Smith R G. Optical power handling capacity of low loss optical fibers as determined by stimulated Raman and Brillouin scattering. Applied Optics. 11(11), 2489-2494(1972).

【15】Gabai H and Eyal A. On the sensitivity of distributed acoustic sensing. Optics Letters. 41(24), 5648-5651(2016).

【16】Fernández-Ruiz M R, Martins H F, Costa L et al. . Statistical analysis of SNR in chirped-pulse Φ-OTDR. [C]∥26th International Conference on Optical Fiber Sensors, September 24-28, 2018, Lausanne, Switzerland. Washington, D. C.: OSA. WF16, (2018).

【17】Agrawal G P and Olsson N A. Self-phase modulation and spectral broadening of optical pulses in semiconductor laser amplifiers. IEEE Journal of Quantum Electronics. 25(11), 2297-2306(1989).

引用该论文

Luchuan Li,Bin Lu,Xiao Wang,Jiajing Liang,Hanrong Zheng,Zhaoyong Wang,Qing Ye,Zujie Fang,Fufei Pang,Haiwen Cai. Internally Modulated Chirped Pulse Based Direct Detection Type φ-OTDR System with High Signal-to-Noise Ratio and Low Cost[J]. Chinese Journal of Lasers, 2019, 46(8): 0806003

李鲁川,卢斌,王校,梁嘉靖,郑汉荣,王照勇,叶青,方祖捷,庞拂飞,蔡海文. 基于内调制啁啾脉冲的高信噪比低成本直接探测型φ-OTDR系统[J]. 中国激光, 2019, 46(8): 0806003

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