针对光纤Mach-Zehnder干涉(MZI)受环境影响的稳定性问题,设计了光纤MZI实验装置.从理论上分析了光纤MZI的输出光强,并给出了实验验证,由示波器直观地显示出光纤MZI的稳定性与环境的关系以及相位调制对干涉的影响等.为了解决振动噪声、温度变化等环境因素导致的光纤MZI不稳定,设计了一种新的相位补偿方案,即用两个2×2光纤耦合器的输出,实现相差检测及反馈控制.
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