光学学报, 2013, 33 (3): 0306003, 网络出版: 2013-02-01
Sagnac效应对光纤时间传递精度的影响分析
Analysis of the Sagnac Effect and Its Influence on the Accuracy of Time Transfer System by the Optical Fiber
摘要
分析了光纤时间传递中Sagnac效应产生的原因,详细推导了地球表面任意两点间Sagnac效应授时误差的计算公式,仿真研究了Sagnac 效应对光纤时间传递精度的影响。结果表明,Sagnac效应授时误差取决于光纤的纬度及其轨迹,当进行长距离时间传递时其误差值可能达到纳秒量级,必须对Sagnac效应进行精确的时延补偿或校准。
Abstract
Analyses have been done to explain the generation of the Sagnac effect in time transfer system over optical fiber. Mathematical expression of the time deviation, which is caused by Sagnac effect between any two points on the surface of the earth, is deducted in detail. Influences on the accuracy of the time transfer are studied deliberately by simulation. It is demonstrated that the time deviation is decided by the latitude and the course of the fiber link and it may be larger than 1 ns for a long haul. So accurate time delay compensation or calibration should be concerned in terrestrial time transfer system.
于龙强, 卢麟, 王荣, 经继松, 吴传信, 朱勇. Sagnac效应对光纤时间传递精度的影响分析[J]. 光学学报, 2013, 33(3): 0306003. Yu Longqiang, Lu Lin, Wang Rong, Jing Jisong, Wu Chuanxin, Zhu Yong. Analysis of the Sagnac Effect and Its Influence on the Accuracy of Time Transfer System by the Optical Fiber[J]. Acta Optica Sinica, 2013, 33(3): 0306003.