有相同的频率和有固定的位相差，并且在同一平面上振动的两偏振光的干涉。可分为平行的平面偏振光的干涉和会聚的平面偏振光的干涉两种。
经过分析，该装置不仅能完成偏振光的干涉实验，而且可以测定晶体的折射率或折射率分布情况。
These devices can not only accomplish polarized light interference experiment, but also measure the refractivity or refractive index profile of crystal.
提出了一种偏振光干涉型光交错复用器的新结构。
A new structure of polarized light interference interleaver is presented.
偏振光干涉仪也是一种能将布拉格波长移动转化为干涉相位变化的非平衡干涉仪。
The polarized light interferometer is also a kind of unbalanced interferometer which can convert the Bragg wavelength shifts into interferometer phase shifts.
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