|
|||||
|
|
| 基于扭曲长周期光纤光栅的高灵敏度压力传感器 | |
| 引用本文： | 饶云江,王久玲,朱涛,王若崑.基于扭曲长周期光纤光栅的高灵敏度压力传感器[J].光子学报,2007,36(3):487-491. |
| 作者姓名： | 饶云江 王久玲 朱涛 王若崑 |
| 作者单位： | 1. 重庆大学,光电工程学院,重庆,400030;电子科技大学,通信与信息工程学院,成都,610054 2. 重庆大学,光电工程学院,重庆,400030 |
| 基金项目： | 国家自然科学基金 , 教育部科学技术研究重点项目 , 重庆市自然科学基金 |
| 摘 要： | 研究了高频CO2激光脉冲写入的长周期光纤光栅在扭曲状态下的横向负载特性.发现扭曲降低了光纤光栅谐振波长横向负载灵敏度的方向相关性,使得这种光栅在各圆周方向上谐振波长对横向负载都不敏感,而谐振峰幅度随横向负载的增加线性减小,且谐振峰幅度的负载灵敏度随扭曲率的增加而提高.在扭曲率为1.8°mm－1时负载灵敏度可达0.47 dB/(g·mm－1),是自由状态长周期光纤光栅横向负载灵敏度的7倍,最后给出了利用这种扭曲长周期光纤光栅通过强度解调实现压力传感的实验研究结果. |
| 关 键 词： | 导波光纤光学 光纤传感器 CO2激光 扭曲长周期光纤光栅 |
| 文章编号： | 1004-4213（2007）03-0487-5 |
| 收稿时间： | 2005-11-24 |
| 修稿时间： | 2005-11-24 |
A High Sensitivity Pressure Sensor Based on Twisted Long-Period Fiber Grating |
|
| RAO Yun-jiang,WANG Jiu-ling,ZHU Tao,WANG Ruo-kun.A High Sensitivity Pressure Sensor Based on Twisted Long-Period Fiber Grating[J].Acta Photonica Sinica,2007,36(3):487-491. | |
| Authors: | RAO Yun-jiang WANG Jiu-ling ZHU Tao WANG Ruo-kun |
| Institution: | (1 Department of Optoelectronics Engineering,Chongqing University,Chongqing 400030,China) (2 School of Communication and Information Engineering,University of Electronics Science & Technology of China,Chengdu 610054,China) |
| Abstract: | The transverse load characteristics of twisted long-period fiber grating (LPFG) written by high-frequency CO2 laser pulses was demonstrated.Theoretical analyses and experimental results show that its transverse load sensitivity is up to 0.47 dB/(g·mm－1),which is 7 times higher than that of a free LPFG induced by the same method.It is found that the strong orientation-dependence of the transverse load sensitivity of the free LPFG reported previously has been weakened considerably.An intensity demodulating method when the twisted LPFG was used to be a pressure sensor was presented. |
| Keywords: | Wave-guide fiber optics Fiber-optic sensor CO2 laser Twisted long-period fiber grating |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《光子学报》浏览原始摘要信息 | |
| 点击此处可从《光子学报》下载免费的PDF全文 | |