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Twist in the center of the loop of Sagnac interferometer of fiber optic to determine the beat length

机译:扭曲Sagnac光纤干涉仪环路的中心以确定拍频长度

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In this work we showed an improvement in the method to measure low birefringence in optical fibers with the Sagnac interferometer published in paper previous in which the fiber twists in an end of the loop of the interferometer and the entrance of the light every time it is adjusted that twists the fiber, In this work we twist the fiber in the center of the loop of the Saganc interferometer it is very simple and we don't need light polarization neither to adjust the axes in the entrance of the fiber. It can use for the mensuration a section of shorter fiber that a beat length. Some theoretical and experimental results are presented.
机译:在这项工作中,我们展示了使用先前发表在纸上的Sagnac干涉仪测量光纤中低双折射的方法的改进,该方法中,每次调整时,光纤都会在干涉仪回路的末端扭曲并进入光路在这项工作中,我们将光纤扭曲在Saganc干涉仪环路的中心,这非常简单,我们也不需要光偏振也无需调整光纤入口的轴。它可以用于测量节拍长度较短的一段纤维。给出了一些理论和实验结果。

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