We report on the realization of a novel fiber-optic radio frequency (RF) transfer scheme with the bidirectional frequency division multiplexing (FDM) dissemination technique. Here, the proper bidirectional frequency map used in the forward and backward directions for suppressing the backscattering noise and ensuring the symmetry of the bidirectional transfer RF signals within one telecommunication channel. We experimentally demonstrated a 0.9 GHz signal transfer over a 120 km optical link with the relative frequency stabilities of 2.2 ×10-14 at 1 s and 4.6 ×10-17 at 20000 s. The implementation of phase noise compensation at the remote site has the capability to perform RF transfer over a branching fiber network with the proposed technique as needed by large-scale scientific experiments.

中文翻译：

---

使用双向频分复用传播的光纤射频传输


我们报告了利用双向频分复用（FDM）传播技术实现新型光纤射频（RF）传输方案。这里，在前向和后向使用适当的双向频率图来抑制反向散射噪声并确保一个电信信道内双向传输RF信号的对称性。我们通过实验证明了 120 km 光链路上 0.9 GHz 信号的传输，1 秒时的相对频率稳定性为 2.2 ×10-14，20000 秒时的相对频率稳定性为 4.6 ×10-17。在远程站点实施相位噪声补偿能够根据大规模科学实验的需要，利用所提出的技术在分支光纤网络上执行射频传输。