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微波外调制BOTDA光纤传感系统 被引量：1

A Microwave Exo-modulation Fiber Optic BOTDA Sensing System
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摘要 通过微波电光调制和光纤光栅滤波产生连续泵浦光信号,声光调制产生脉冲信号,设计了一个基于布里渊光时域分析(BOTDA)技术的单端光纤传感系统。该系统通过扫描微波频率实现布里渊谱的测量,进而获得传感光纤上温度和应变的数据。对系统空间分辨率、测量时间等性能进行了分析,并对布里渊信号进行了仿真。 A single-ended fiber sensing system based on Brillouin optical time domain analysis（BOTDA） sensing technology is designed,in which the CW pump light is generated by microwave electro-optical modulation and fiber grating filtering,and the pulse light is produced by acousto optic modulation.The measurement of Brillouin spectrum is achieved by scanning the microwave frequency,then the data of temperature and strain distribution along an optical fiber are measured.Finally,the performance of the system,such as spatial resolution,measurement time,are analyzed,and the Brillouin signal is simulated.
作者 张芙蓉 李永倩 张竞文
机构地区 华北电力大学电子与通信工程系
出处 《光纤与电缆及其应用技术》 2010年第1期34-37,共4页 Optical Fiber & Electric Cable and Their Applications
基金 国家863计划资助项目(2006AA09Z141)
关键词 分布式光纤传感 布里渊散射 布里渊光时域分析 distributed fiber sensing Brillouin scattering BOTDA
分类号 TP212.14 [自动化与计算机技术—检测技术与自动化装置]
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参考文献8

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二级参考文献26

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共引文献52

同被引文献11

  • 1MINARDO A, BERNINI R, ZENI L. A simple technique for reducing pump depletion in long-rang distributed Brillouin fiber sensor [J]. Sensors Journal, 2009,9 (6) : 633-634.
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  • 3BERNINI R,MINARDO A,ZENI L. A Reconstruction Technique for Stimulated Brillouin scattering fiber-optic sensors for simultaneous mea- surement of temperature and strain[J]. Sensors, 2002 (2) .. 1006-1011.
  • 4ZORNOZA A, MINARDO A, BERNINI R. Pulsing the probe wave to reduce nonlocal effects in Brillouin optical time-domian analysis sensor[J]. Sensors Journal ,2011,11(4) : 1067'1068.
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  • 6HOTATE K. Recent progressin Brillouin based fiber sensor technology correlation-based continuous-wave technique[C]. Portland, OR, USA: Opti- cal Fiber Sensors Conference Technical Digest, 2002: 297-300.
  • 7张竟文.基于BOTDA的温度应变传感的理论和实验研究[D].保定:华北电力大学.2011:25-26.
  • 8DONG Y, CHEN L, BAO X. Time-division multiplexing-based BOT- DA over 100km sensing length[J]. Opt.lett, 2011,36(2): 277-279.
  • 9BAO X, CHEN L. High performance BOTDA for long range sensing [C]. San Diego, Califomia, USA: Proc.SPIE, 2011(7982):798206-798210.
  • 10BERNINI R, MINARDO A, ZENI L. Long-range distributed Brillouin fiber sensors by use of an unbalanced double sideband probe [J]. Opt. Ex- press,2011,19(24) :23845-23856.

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光纤与电缆及其应用技术
2010年 第1期

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