双波长补偿光纤M-Z干涉仪偏置相位漂移

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

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。

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 compensation 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 environmental parameters such as the fluctuation of ambient temperature et al.