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对光纤马赫－曾德干涉仪及影响其输出稳定性的各种因素进行了分析，提出了消除这些影响的信号处理方案，并通过建立光纤干涉磁强计加以验证。结果表明，所提出的信号处理方案可以有效地消除由于光功率、光频和光的偏振态改变引起的输出不稳定。
The optical fiber Mach-Zehnder interferometer and various factors that affect its output stability are analyzed. The signal processing scheme to eliminate these effects is proposed and verified by establishing a fiber interference magnetometer. The results show that the proposed signal processing scheme can effectively eliminate the output instability caused by the changes of optical power, optical frequency and the polarization state of light.