在该测试系统中利用全反射棱镜的偏振自补偿特性，实现了偏振光的空间转向传输。
Utilizing the characteristic of reflection prism in automatic polarization compensation in this test system, which realizes spacial veer transmission of polarization-light.
由于电信号传输系统保密性和抗干扰能力差，为此，利用声光晶体的衍射效应研制了一种光信号自由空间传输系统。
To resolve this problem, a free space transmission system for optical signals is developed on base of diffraction effect of acoustooptic crystal.
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