Simple Stabilized Radio-Frequency Transfer With Optical Phase Actuation
Simple Stabilized Radio-Frequency Transfer With Optical Phase Actuation
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DOI：
10.1109/lpt.2017.2785363
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发表时间：
2017-05
影响因子：
2.6
通讯作者：
D. Gozzard;S. Schediwy;B. Courtney-Barrer;Richard Whitaker;K. Grainge
中科院分区：
文献类型：
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作者：
D. Gozzard;S. Schediwy;B. Courtney-Barrer;Richard Whitaker;K. Grainge
我们描述和实验评估一个稳定的射频传输技术，采用光学相位传感和光学相位驱动。这种技术是通过修改现有的光学频率传输设备，也表现出优于以前的稳定的射频传输技术的尺寸和复杂性方面的优势。声光调制器（AOM）用于调制光载波。链路中的频率波动的稳定通过操纵AOM之一的频率来实现。我们演示了160 MHz信号在166 km光纤链路上的稳定传输，在1 s积分时实现了9.7\times 10^{-12}$的Allan偏差，在10 ^{4}$ s时实现了6.4\times 10^{-15}$。该技术被考虑应用于平方公里阵列SKA 1低射电望远镜。
We describe and experimentally evaluate a stabilized radio-frequency transfer technique that employs optical phase sensing and optical phase actuation. This technique is achieved by modifying existing optical frequency transfer equipment and also exhibits advantages over previous stabilized radio-frequency transfer techniques in terms of size and complexity. Acousto-optic modulators (AOMs) are used to modulate an optical carrier. Stabilization of frequency fluctuations in the link is achieved by steering the frequency of one of the AOMs. We demonstrate the stabilized transfer of a 160-MHz signal over a 166-km fiber optical link, achieving an Allan deviation of $9.7\times 10^{-12}$ at 1 s of integration, and $6.4\times 10^{-15}$ at $10^{4}$ s. This technique was considered for application to the Square Kilometre Array SKA1-low radio telescope.