Two-way time transfer via optical fiber providing subpicosecond precision and high temperature stability
Two-way time transfer via optical fiber providing subpicosecond precision and high temperature stability
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DOI：
10.1088/0026-1394/53/1/18
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发表时间：
2016-02-01
期刊：
影响因子：
2.4
通讯作者：
Prochazka, Ivan
中科院分区：
文献类型：
--
作者：
Kodet, Jan;Panek, Petr;Prochazka, Ivan
报道了光纤双向时间传递装置的分析、设计、结构和关键参数。在通过相对较短的光纤的双向光学时间传递(TWOTT)中，误差的主要来源是终端单元内的内部延迟的温度依赖性。考虑两种不同结构的光电域反馈耦合终端，分析了内延时滞及其温度依赖性对TWOTT过程的影响。所得结果已用于实现标准小尺寸热插拔光收发信机的TWOTT系统的优化设计。对该系统进行的业务试验证明，该系统的时间传递精度达到了亚皮秒级，时间传递的稳定性优于60ps，时间传递的平均间隔时间为100fSK-1，平均时间为100fSK-1，平均时间为100fSK-1。
We are reporting on analysis, design, construction, and key parameters of the device for a two-way time transfer via an optical fiber. The dominant source of errors in the two-way optical time transfer (TWOTT) via relatively short optical fibers is the temperature dependence of internal delays within the terminal units. We have performed an analysis of the influence of the internal delays and their temperature dependence on the TWOTT process considering two different configurations of the terminals with the feedback coupling in optical and electrical domains. The achieved results have been used for the optimal design of a TWOTT system implementing standard small form-factor pluggable optical transceivers. The operational tests of this new TWOTT system confirmed the precision of the time transfer on the subpicosecond level, the time transfer stability characterized by TDEV better than 60 fs for averaging intervals from 100 s to 10 000 s, and the temperature stability better than 100 fs K-1.