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

机译：基于单模光纤宏弯曲损耗的高敏感倾斜传感器

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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：提出了一种新的高敏感倾斜传感器，并基于单模光纤（SMF）的宏弯曲损耗进行实验证明，并且通过形成多个纤维圈可以提高其灵敏度。倾斜传感器由SMF弯曲成半圆形，半径足够小以获取宏弯曲损耗，并且它在具有合适量的液体的容器中固定。当容器倾斜时，半圆周围的周围折射率随着液位而变化。根据理论推导，宏弯曲损耗与倾斜角度有关，这意味着可以根据测量的宏弯曲调制角度。实验结果对应于理论预测，并表明传感器具有高倾斜角灵敏度，其达到 - 0.074 dB /度在初始方案中，两个转弯情况下的0.188 dB /度。在改进的方案中，倾斜角的可检测范围为-90度至90度。本文理论上还预测了温度影响。

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：纤维倾斜传感器;单模光纤;宏观弯曲损失;液柱;

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