双波长补偿光纤M-Z干涉仪偏置相位漂移

为克服原补偿方法在某些相位点的失效，提出采用双波长法，并进行了实验验证。实验中，固定一个波长，调整另一波长直至两波长达到特定间隔，此时在任意的偏置相位下均能获得没有衰落的补偿后的信号。实验结果表明，这种新的双波长补偿方法可以适合干涉仪偏置相位任意变化的情况，可有效地克服环境温度变化等因素引起干涉仪输出信号的衰落。

Variation-compensated of Bias Phase in Fiber M-Z Interferometers with Dual-wavelength Method

A new dual-wavelength compensation method for the variation of bias phase in Mach-Zehnder(M-Z) interferometer was proposed and experimentally demonstrated.A none-fading compensated signal could always get when a space of two wavelengthes was specially selected by adjusting the one center wavelength of the two sources.As a experimental result,this dual-wavelength copensation method can work arbitrary bias phase as against the single-wavelength method.Thus it can effectively solve the signal fading problem of the interferometer,which may arise from the variations of enviromental parameters such as the fluctuation of ambient temperature et al.