摘要
光纤布拉格光栅(FBG)是一种国际上新兴的在光纤通信、光纤传感等光电子技术领域有着广泛应用前景的基础性光纤器件。本文首先介绍FBG传感原理,然后用光纤布拉格光栅应变传感器和高精度电阻应变片同时监测钢板拉伸应变变化,并对实验获得的数据进行分析。结果表明FBG应变传感器测得的应变和高精度应变片测得的很接近,反射波长和应变具有很好的相关性,相关系数达到0.9995。基于光纤布拉格光栅的应变测方法可行,并具有良好的应用前景。
Fiber Bragg Grating is expected to be an international burgeoning fiber optic device that would have a greatly applicative prospect in fiber communication and fiber sensor. This thesis first introduces sensing principle, And then designs an experiment to monitor steel plate tensile strain use FBG strain sensor and high-precision resistance strain gage. Next,the data obtained from experiment is analyzed. The results show that the strain measured by the FBG strain sensor is very close to that measured by high-precision resistance strain gage. The FBG strain sensor can obtain better correlation coefficient of reflection wavelength and strain. Therefore, strain monitoring method based on FBG is feasible and has potential of anticipation result.
出处
《电子测试》
2013年第1期49-51,共3页
Electronic Test
