基于光纤传输的1.5GHz信号的稳相系统设计与测试Design and test of a 1.5 GHz phase stabilization system based on optical fiber transmission
江永琛;王锦清;苟伟;虞林峰;
摘要(Abstract)：
设计了一款基于光纤传输的1.5 GHz的稳相频标传输系统,实现系统在光纤介质中传输的相位校准。文中对系统的稳相原理和性能进行了分析和评估,然后对光纤稳相系统的性能进行了测试分析。包括实验室中的高低温箱测试以及地埋长光纤的实测。结果表明,基于目前的测试系统,与未稳相时相比,稳相系统对相位波动的长时间改善效果达到130多倍。文中还对光纤本身的温度系数进行了测试与分析,得到了光纤温漂系数。为了解决频率稳定度和相噪恶化的问题,文中还引入了一款高稳定度的晶振锁相模块,并给出了多组实测数据,使得频率稳定度和相噪都得到了明显的改善。该系统将应用到上海天马65 m射电望远镜系统的频标信号传输中。
关键词(KeyWords)： 光纤传输;相位校准;频率稳定度;相噪
基金项目(Foundation): 国家自然科学基金资助项目(11303076)
作者(Author): 江永琛;王锦清;苟伟;虞林峰;
Email:
DOI: 10.13875/j.issn.1674-0637.2017-03-0137-09
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