| 自映像多模干涉仪的应力传感研究 |
| |
| 引用本文： | 徐贲,李建庆.自映像多模干涉仪的应力传感研究[J].光电子．激光,2012(9):1722-1726. |
| |
| 作者姓名： | 徐贲 李建庆 |
| |
| 作者单位： | 澳门科技大学资讯科技学院;澳门科技大学资讯科技学院 |
| |
| 摘 要： | 提出一种基于自映像原理的多模应力传感器。通过测量透射谱中满足自映像条件的波峰波长,解调纵向应力的大小。分析了传感器中多模光纤(MMF)结构参数对透射谱的影响。0～4 400με纵向应力范围的实验结果表明,透射光谱峰值波长的漂移与应力之间呈良好的线性关系,应力敏感度为1.29pm/με。本文传感器制备简单,对MMF的长度精度要求不高。利用多模干涉仪(MMI)的带通特性,可以通过简单地并联不同长度的无芯光纤传感器实现多路复用。
|
| 关 键 词： | 光纤光学 光纤传感 多模干涉仪(MMI) 自映像原理 应力 |
Optical multimode interferometer based on self-imaging for strain sensing |
| |
| LI Jian-qing.Optical multimode interferometer based on self-imaging for strain sensing[J].Journal of Optoelectronics·laser,2012(9):1722-1726. |
| |
| Authors: | LI Jian-qing |
| |
| Affiliation: | Faculty of Information Technology,Macau University of Science and Technology,Macao SAR 999078,China;Faculty of Information Technology,Macau University of Science and Technology,Macao SAR 999078,China |
| |
| Abstract: | A novel fiber optic multimode strain sensor based on self-imaging effect is presented.The longitudinal strain can be measured by the shift of peak wavelength of transmission spectrum satisfying self-imaging condition.The impact of structure parameters of multimode fiber on the transmission spectrum is analyzed.Experimental results of strain ranging from 0 to 4 400 με show a good linear relationship between the strain and the peak wavelength,and the strain sensitivity is 1.29 pm/με.The sensor is easy to fabricate,and the precision requirement of the length of multimode fiber is not too rigorous.Due to the pass-band filter response of multimode interference(MMI) devices,the multiplexing can be easily implemented by the parallel connection of no-core multimode fiber sensors with different lengths. |
| |
| Keywords: | fiber optics fiber sensor multimode interferometer(MMI) self-imaging effect strain |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《光电子．激光》浏览原始摘要信息 |
|
点击此处可从《光电子．激光》下载全文 |
