东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (12): 1688-1691.DOI: 10.12068/j.issn.1005-3026.2016.12.004

• 信息与控制 • 上一篇    下一篇

基于酒精选择性填充光子晶体光纤的Sagnac应变传感器

胡海峰, 李雪刚, 周雪, 赵勇   

  1. (东北大学 信息科学与工程学院, 辽宁 沈阳110819)
  • 收稿日期:2016-05-24 修回日期:2016-05-24 出版日期:2016-12-15 发布日期:2016-12-23
  • 通讯作者: 胡海峰
  • 作者简介:胡海峰(1984-),辽宁辽阳人,东北大学讲师,博士; 赵勇(1973-),男,辽宁沈阳人,东北大学教授,博士生导师.
  • 基金资助:
    国家杰出青年科学基金资助项目(61425003); 国家自然科学基金资助项目(61273059); 流程工业综合自动化国家重点实验室基础科研业务费资助项目(2013ZCX09).

Optic-Fiber Sagnac Strain Sensor Based on Alcohol Selectively-Filling Photonic Crystal Fiber

HU Hai-feng, LI Xue-gang, ZHOU Xue, ZHAO Yong   

  1. School of Information Science & Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2016-05-24 Revised:2016-05-24 Online:2016-12-15 Published:2016-12-23
  • Contact: ZHAO Yong
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摘要: 提出了一种基于酒精选择性填充光子晶体光纤的新型Sagnac光纤环应变传感器,实现了对微小应变的高灵敏度测量.利用酒精对光子晶体光纤的选择性填充使之产生双折射效应,并将已经填充好的光子晶体光纤嵌入到Sagnac干涉环中,实现了Sagnac干涉效应.当给光子晶体光纤施加应变时,Sagnac干涉谱的波峰会随着应变变化而变化,实现对应变的测量.实验结果表明,当微应变在0~3958时,测量微应变的灵敏度能够达到3.66pm.同时,本结构具有高灵敏度、高稳定性、抗电磁干扰、易于搭建等优点.

关键词: 光子晶体光纤, Sagnac应变传感器, 应变, 酒精选择性填充, 传感器

Abstract: A new optic-fiber Sagnac strain sensor based on alcohol filling photonic crystal fiber was proposed and demonstrated, by which measuring the minute strain could be achieved. The birefringence of the photonic crystal fiber (PCF) was produced by alcohol selectively-filling the air holes of the PCF. And then the alcohol selectively-filling photonic crystal fiber was embedded in the Sagnac loop and the Sagnac interference effect was achieved. Then the peak wavelength of the Sagnac interference spectrum could be changed by strain because the peak wavelength shift was directly proportion to strain change. The micro strain sensitivity is measured to be 3.66pm in a micro strain range from 0 to 3958.

Key words: photonic crystal fiber; Sagnac strain sensor, strain; alcohol selectively-filling; sensor

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