非对称Mach-Zehnder光纤干涉仪测试光速各向异性
Asymmetric Mach-Zehnder fiber interferometer test of the anisotropy of the speed of light
摘要:
两台光纤马赫-曾德干涉仪是在温度稳定性优于每天1 mK的环境中建造的。每个臂中有一个长度为2 m的光纤的干涉仪,臂的主方向彼此平行。在一个臂中插入一条充满大气的路径(长度175 mm)。在每个平行臂中插入另一个长度为2 m的光纤干涉仪作为控制。在每个臂中,1米的纤维缠绕在由压电材料制成的环上,使得能够通过电压控制臂的长度。确定了在地球表面的干涉仪的旋转对观测到的相位差的影响。对于一个干涉仪(与空气路径),发现相位差取决于干涉仪的方位角。对于另一个没有相关的依赖关系的方位角已被测量。
英文摘要:
Two optical fiber Mach-Zehnder interferometers were constructed in an environment with a temperature stabilization of better than 1 mK per day. One interferometer with a length of 2 m optical fiber in each arm with the main direction of the arms parallel to each other. A path (length 175 mm) filled with atmospheric air is inserted in one arm. Another interferometer with a length of 2 m optical fiber in each parallel arm acts as a control. In each arm 1 m of fiber was wound around a ring made of piezo material enabling the control of the length of the arms by means of a voltage. The influence of rotation of the interferometers at the Earth surface on the observed phase differences was determined. For one interferometer (with the air path) it was found that the phase difference depends on the azimuth of the interferometer. For the other one no relevant dependence on the azimuth has been measured.
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