摘要
基于偏振效应的光纤光栅磁场传感方案,具有对温度和应力等因素不敏感的特点。在利用相位掩模法进行光栅制作时会产生随机相位误差、线性啁啾和非线性啁啾等相位误差,通过建立数学模型,对不同相位误差对该传感方案性能的影响进行仿真分析。结果表明,相位误差没有改变PDL峰值与磁场的线性关系,但对传感系统的精确度和灵敏度产生影响。
The scheme of measuring magnetic field based on the polarized effect has the advantages of insensitive to temperature and stress. The principle of measuring the magnetic field is analyzed and simulated using the coupled mode theory. In the phase mask grating fabrication process will produce such as random, linear and nonlinear chirp phase error, three types of mathematical model of phase error are established for simulate and analyze the performance of sensor system. It is shown that the linear relationship between PDL peak value and the magnetic field have no changed with phase error. But the sensor system accuracy and sensitivity are changed.
出处
《光通信技术》
CSCD
北大核心
2009年第9期50-52,共3页
Optical Communication Technology
基金
国家自然科学基金(60871075)资助
作者简介
冯奎（1984-），男，安徽利辛人，硕士研究生。主要从事光传感方面的研究。
