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High-sensitive tilt sensor based on macro-bending loss of single mode fiber

机译：基于单模光纤宏观弯曲损耗的高灵敏度倾斜传感器

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摘要

A novel high-sensitive tilt sensor is proposed and experimentally demonstrated based on the macro-bending loss of single mode fiber (SMF), and its sensitivity can be improved by forming multiple fiber laps. The tilt sensor is formed by an SMF bend into a semicircle with radius small enough to acquire the macro-bending loss, and it is fixed in a vessel with suitable amount of liquid. The surrounding refractive index around the semicircle changes along with the liquid level when the vessel is tilted. According to theoretical derivation, the macro-bending loss is related to the tilted angle, which means the angle can be modulated from the measured macro-bending. The experiment result corresponds to theoretical prediction and shows that the sensor has a high tilted angle sensitivity, which reaches - 0.074 dB/degree in the initial scheme and - 0.188 dB/degree in two turns situation. The detectable range of the tilted angle is from - 90 degrees to 90 degrees in the improved scheme. The temperature influence is also theoretically predicted in this paper.
机译：提出了一种新型的高灵敏度倾斜传感器，并基于单模光纤的宏观弯曲损耗进行了实验验证，可以通过形成多个光纤搭接来提高其灵敏度。倾斜传感器是通过将SMF弯曲成半径足够小以获取宏弯曲损耗的半圆而形成的，并且将其固定在装有适量液体的容器中。当容器倾斜时，半圆周围的周围折射率随液位变化。根据理论推导，宏弯曲损耗与倾斜角度有关，这意味着可以根据所测量的宏弯曲来调整角度。实验结果与理论预测相符，表明该传感器具有较高的倾斜角灵敏度，初始方案达到-0.074 dB /度，两圈时达到-0.188 dB /度。在改进方案中，倾斜角度的可检测范围是从-90度到90度。从理论上讲，温度影响也是可以预测的。

著录项

  • 来源
    《Optical fiber technology》 |2019年第7期|1-7|共7页
  • 作者

    Chen Weirong; Zhang Yanxin; Zhang Weigang; Chen Qiang; Zhang Yunxiao; Li Mengxia; Zhao Wei; Zhang Yunshan; Yan Tieyi;

  • 作者单位

    Nankai Univ, Tianjin Key Lab Optoelect Sensor & Sensing Networ, Inst Modern Opt, Tianjin 300350, Peoples R China;

    Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China;

    Nankai Univ, Tianjin Key Lab Optoelect Sensor & Sensing Networ, Inst Modern Opt, Tianjin 300350, Peoples R China;

    Nankai Univ, Tianjin Key Lab Optoelect Sensor & Sensing Networ, Inst Modern Opt, Tianjin 300350, Peoples R China;

    Nankai Univ, Tianjin Key Lab Optoelect Sensor & Sensing Networ, Inst Modern Opt, Tianjin 300350, Peoples R China;

    Nankai Univ, Tianjin Key Lab Optoelect Sensor & Sensing Networ, Inst Modern Opt, Tianjin 300350, Peoples R China;

    Nankai Univ, Tianjin Key Lab Optoelect Sensor & Sensing Networ, Inst Modern Opt, Tianjin 300350, Peoples R China;

    Nankai Univ, Tianjin Key Lab Optoelect Sensor & Sensing Networ, Inst Modern Opt, Tianjin 300350, Peoples R China;

    Nankai Univ, Tianjin Key Lab Optoelect Sensor & Sensing Networ, Inst Modern Opt, Tianjin 300350, Peoples R 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

    Fiber tilt sensor; Single mode fiber; Macro-bending loss; Liquid pendulum;

    机译：光纤倾斜传感器;单模光纤;微弯曲损耗;液体摆;

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