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一种基于相位敏感光时域反射计的多参量振动传感器
  • ISSN号：0258-7025
  • 期刊名称：《中国激光》
  • 时间：0
  • 分类：TP212.14[自动化与计算机技术—控制科学与工程;自动化与计算机技术—检测技术与自动化装置]
  • 作者机构：[1]中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室,上海201800, [2]中国科学院研究生院,北京100049
  • 相关基金：国家自然科学（联合）重点基金（U0934001）; 上海市科技攻关项目（11DZ1140202）资助课题
作者： 梁可桢[1,2], 潘政清[1], 周俊[1,2], 叶青[1], 蔡海文[1], 瞿荣辉[1]
关键词： 传感器, 相位敏感光时域反射计, 光纤传感, 相干检测, 维纳滤波, sensors, optical time domain reflectometer, fiber sensor, coherent detection, Wiener filter
中文摘要：

提出了一种基于数字相干检测和维纳滤波技术的相位敏感光时域反射计（φ-OTDR）。在该技术中,实时解调出了沿光纤链路散射回的瑞利信号电场的振幅和相位。通过分析解调出的振幅和相位,检测到了位于3.5km传感光纤上的一个由压电陶瓷（PZT）所产生的正弦振动信号的位置、频率和强度。应用维纳滤波降低了由激光器的相位噪声和探测器加性噪声引起的相位波动。系统的空间分辨率为5m。

英文摘要：

A phase sensitive optical time domain reflectometer （OTDR） technology based on the digital coherent detection and Wiener filter is proposed and analyzed, in which the phase and amplitude of the Rayleigh scatting light along the fiber link can be demodulated in real time. Using the proposed method, the vibration position, frequency and intensity for a sinusoidal disturbance signal driven by a lead zirconate titanate （PZT） on a 3.5 km single mode fiber link are obtained exactly. Wiener filter is used to reduce the laser phase noise and additive noise caused the phase fluctuation. A spatial resolution of 5 m for the system is realized.

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期刊信息
  • 《中国激光》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国光学学会 中国科学院上海光学精密机械研究所
  • 主编：周炳琨
  • 地址：上海市嘉定区清河路390号
  • 邮编：201800
  • 邮箱：cjl@siom.ac.cn
  • 电话：021-69917051
  • 国际标准刊号：ISSN：0258-7025
  • 国内统一刊号：ISSN：31-1339/TN
  • 邮发代号:4-201
  • 获奖情况:
  • 中国自然科学核心期刊,物理学类核心期刊,无线电子学·电信技术类核心期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:26849