马赫-曾德尔光纤干涉仪测试光速各向异性
Mach-Zehnder fiber interferometer test of the anisotropy of the speed of light
摘要：
两个光纤马赫-曾德尔干涉仪的温度稳定性优于1 mK每天的环境中构建。每个臂中有一个长度为12 m的光纤的干涉仪，臂的主方向彼此垂直。另一个在每个臂中具有2 m长度的光纤，其中臂的主方向平行作为对照。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。测量了温度对干涉仪臂间光学相位差的影响。这是由于温度变化引起光纤耦合器相互作用区的变化。此外，在地球表面的干涉仪的旋转上观察到的相位差的影响进行了测定。对于一个干涉仪（具有长且垂直的臂），发现相位差取决于干涉仪的方位角。对于另一个（具有短臂和平行臂），没有测量到对方位角的相关依赖性。
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 12 m optical fiber in each arm with the main direction of the arms perpendicular to each other. Another with a length of 2 m optical fiber in each arm where the main direction of the arms are parallel 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 the temperature on the optical phase difference between the interferometer arms was measured. It is attributed to the temperature change induced variation of the interaction region of the optical fiber couplers. Further, the influence of rotation of the interferometers at the Earth surface on the observed phase differences was determined. For one interferometer (with the long and perpendicular arms) it was found that the phase difference depends on the azimuth of the interferometer. For the other one (with the short and parallel arms) no relevant dependence on the azimuth has been measured.
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