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Frequency response of distributed fiber-optic vibration sensor based on nonbalanced Mach-Zehnder interferometer

机译：基于非平衡马赫曾德尔干涉仪的分布式光纤振动传感器的频率响应

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摘要

We set up the analytical model for the frequency response of a distributed fiber-optic vibration sensor based on the nonbalanced Mach-Zehnder interferometer, the frequency response of which is related to both of the length difference of the delay fibers and the location of the vibration. In addition, a series of null frequencies, in which the vibration cannot be detected, is also found. The distributed fiber-optic vibration sensor with the delay fiber of 25 km and the sensing fiber of 10 km is built experimentally. Two null frequencies of 8013 Hz and 5011 Hz, which are induced from the delay fibers and the location of vibration respectively, are obtained. The results can serve as an important guidance for designing the sensor.
机译：我们基于非平衡Mach-Zehnder干涉仪建立了分布式光纤振动传感器频率响应的解析模型，其频率响应与延迟光纤的长度差和振动的位置有关。 。此外，还发现了一系列无法​​检测到振动的零频率。实验建立了延迟光纤为25 km，传感光纤为10 km的分布式光纤振动传感器。获得了分别由延迟光纤和振动位置引起的两个8013 Hz和5011 Hz的零频率。结果可以作为设计传感器的重要指导。

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  • 来源
    《Optical fiber technology》 |2013年第1期|47-51|共5页
  • 作者

    Pu Wei; Xuekang Shan; Xiaohan Sun;

  • 作者单位

    Lab of Photonics and Optical Communications, Dept. of Electronics Engineering, Southeast University, Jiangsu Engineering Center for Optical Sensing/Communications and Networking Technology, Nanjing 210096, China;

    Lab of Photonics and Optical Communications, Dept. of Electronics Engineering, Southeast University, Jiangsu Engineering Center for Optical Sensing/Communications and Networking Technology, Nanjing 210096, China;

    Lab of Photonics and Optical Communications, Dept. of Electronics Engineering, Southeast University, Jiangsu Engineering Center for Optical Sensing/Communications and Networking Technology, Nanjing 210096, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    distributed fiber optic sensor; interferometer; frequency response; null frequency;

    机译：分布式光纤传感器干涉仪频率响应;零频率;

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