Stable radio-frequency dissemination system of single wavelength with passive compensation and remote reconstruction
Stable radio-frequency dissemination system of single wavelength with passive compensation and remote reconstruction
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DOI：
10.1016/j.optcom.2019.04.023
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发表时间：
2019-08
影响因子：
2.4
通讯作者：
Jingxi Liang;Chenxia Liu;Fan Hu;Shujin Zhou;Song Yu;Yaojun Qiao
中科院分区：
文献类型：
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作者：
Jingxi Liang;Chenxia Liu;Fan Hu;Shujin Zhou;Song Yu;Yaojun Qiao
高精度频率的传递和同步对于各种应用领域至关重要。最近，光纤链路已成为长距离频率传播的一个有吸引力的选择。在本文中，我们演示了一种稳定的基于射频（RF）光纤的传输系统，并通过混频进行无源补偿。与以往的解决方案不同，该系统采用单波长的光载波来保持传输对称性。在本端利用三倍频信号来避免后向瑞利散射的影响，并减轻相位共轭信号的干扰。此外，而不是跟踪光纤链路的相位漂移，像一个主动补偿，远程重建模块的锁相环（PLL）的基础上使用，以提高在我们的被动方案的传输性能。在验证实验中，在80 km标准单模光纤链路上，系统的传输稳定性分别为2.86× 10 - 14/1 s和6.62× 10 - 17/10 4 s。
The transfer and synchronization of high-precision frequency are crucial for various application fields. Recently, the fiber link has become an attractive option for long-haul frequency dissemination. In this paper, we demonstrate a stable radio-frequency (RF) fiber-based transmission system with passive compensation method by frequency mixing. Different from previous solutions, single wavelength of the optical carriers is employed in the proposed system to maintain the transmission symmetry. The frequency-tripled signal at the local end is utilized to avoid the effects of backward Rayleigh scattering and mitigate the interference from the phase-conjugated signal. Additionally, instead of tracking the phase drift of the fiber link like an active compensation, the remote reconstruction module based on phase-lock-loop (PLL) is used to improve the transfer performance in our passive scheme. In the proof experiment, the transfer stabilities of the implemented system are 2.86× 10− 14/1 s and 6.62× 10− 17/10 4 s over 80 km standard single mode fiber link.