相位压缩技术在光纤应变传感器中的应用

A Fiber-optic Strain Sensor Based on Phase Compression Theory

摘要:

介绍了相位压缩技术在光纤应变传感器中的应用，对其工作原理进行了分析，给出了数学模型，并进行了实验研究。理论分析及实验表明。与普通干涉仪相比该系统的动态测量范围扩大了数百倍，并且系统不受外界缓变量的影响；该系统的线性度为0．18％，精度为0．17％。

Abstract:

A fiber-optic strain sensor based on phase compression technology was proposed.The theory was analyzed.The model was given.It was verified in experiment.Theoretical analysis and experimental results show that this system has a large dynamic range extended hundreds times and is out of the effect of slow circumstance variables compared with the common interferometers.The experiment results show that linear at 0.18 % and accuracy at 0.17 % have been achieved.