Optical fibers in time and frequency transfer
Optical fibers in time and frequency transfer
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DOI：
10.1088/0957-0233/21/7/075302
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发表时间：
2010-07
影响因子：
2.4
通讯作者：
Ł. Śliwczyński;P. Krehlik;M. Lipinski
中科院分区：
文献类型：
--
作者：
Ł. Śliwczyński;P. Krehlik;M. Lipinski
本文分析了基于强度调制和光信号直接检测（IM-DD）的光纤传输系统中时间/频率传递的基本精度极限。单向和双向的时间/频率传输方案被认为是，并指出其主要局限性。特别是，光纤后向散射的影响和色散的温度依赖性的双向传输的上下文中检查。最后，实验结果和相关的前述考虑。用60公里长的光纤进行的实验证明了时间传输的单皮秒精度。我们的测量结果表明，它应该是可能的，以获得更好的时间/频率传输的准确性比文献中报道的系统的基础上的IM-DD原则。
In the paper we analyze the fundamental accuracy limits of the time/frequency transfer in fiber-optic transmission systems based on intensity modulation and direct detection (IM-DD) of the light signal. The unidirectional and bidirectional time/frequency transfer schemes are considered, and their main limitations are pointed out. In particular, the impact of the fiber backscattering and the temperature dependence of the chromatic dispersion are examined in the context of bidirectional transfer. Finally, experimental results are presented and related to the preceding considerations. The experiments performed with a 60 km long fiber demonstrate single-picosecond accuracy of the time transfer. Our measurements suggest that it should be possible to obtain better accuracy of time/frequency transfer than that reported in the literature for systems based on the IM-DD principle.