中文摘要：

基于偏振效应的光纤光栅磁场传感方案，具有对温度积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。

英文摘要：

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.