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中文摘要：
本文研究了在Sagnac干涉仪中插入单轴晶体，利用单轴晶体的纵向电光效应调制Pancharatnam—Berry位相。由于Sagnac干涉仪的顺、逆时针环路之间光程差为零，所以有利于区分顺、逆时针环路之间的非光程差引起的Pancharatnam—Berry相。本文结果发现在施加的电压连续变化下，由于单轴晶体纵向电光效应的特点使得Pancharatnam—Berry相发生两次突变，而顺、逆时针环路的光相干叠加后的光强却连续变化。
英文摘要：
We study the modulation of Pancharatnam-Berry phase by lonexugitudinal electro-optical modulator which is an uniaxial crystal inserted into Sagnac interferometer. Because the difference of optical paths between clockwise and anticlockwise loop is zero, under the condition of zero-phase-difference related to the optical paths, the Pancharatnam-Berry phase between clockwise and anticlockwise loop can be distinguished more favorably. The results show that when the applied voltage vary continuously, the Pancharatnam-Berry phase jumps twice due to the characteristics of uniaxial crystal, while the coherent superposition intensity vary continuously.
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