针对光纤傅里叶变换光谱仪(FFTS)中压电陶瓷非线性调制导致的复原光谱图畸变问题,设计了He-Ne激光辅助干涉仪,利用该干涉仪实现被测光的等光程间隔采样,以及为待测光源光谱定标提供依据.使用该干涉仪测量了632.8 nm He-Ne激光光源的干涉信号,采用傅里叶变换算法计算了其光谱图,并与传统光栅光谱仪测量的光谱图进行比较,分析了两者存在的差异及其原因,为FFTS的后续研制工作提供了有益参考.
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