一种抗剧烈温度波动的光纤频率同步系统
A Robust Fiber-based Frequency Synchronization System Immune to Dramatic Temperature Fluctuation
摘要：
光纤频率同步系统中射频器件的隔离度有限，且存在非线性效应，对温度变化非常敏感。为了使其适用于光纤链路环境温度变化剧烈的大型科学和工程项目，我们设计了一种抗温度波动的非谐波频率传播系统。经过光纤环境温度每天波动40 ℃和每小时波动20 ℃的实验室测试，该系统的相对频率稳定度分别达到4.0 E-14/s和3.0 E-16/1 E4 s。结果表明，该非谐波控制方案对温度波动剧烈的复杂工作环境具有较强的鲁棒性。
英文摘要：
Fiber-based frequency synchronization system is sensitive to temperature change because of the limited isolation and nonlinear effect of RF components in the system. In order to make it suitable for the use of large-scale scientific and engineering projects in which the ambient temperature of the fiber link changes dramatically, we designed a non-harmonic frequency dissemination system immune to temperature fluctuation. After the lab tests in which the ambient temperature of fiber fluctuates 40 degrees centigrade per day and 20 degrees centigrade per hour respectively, the relative frequency stabilities of this system reached 4.0 E-14/s and 3.0 E-16/1E4 s. It is demonstrated that the proposed non-harmonic scheme shows a strong robustness to the complicated working environment with dramatic temperature fluctuation.
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