光纤网络的新机遇——时间频率同步和信息感知.pdf

基准原子钟的物理、技术与应用专题 光纤网络的新机遇——时间频率同步和 2023－05－16收到 † email：bo.wang@ 信息感知* DOI：10.7693/w 王 波 陈雨锋 王 贯† (清华大学精密仪器系 时空信息精密感知技术全国重点实验室 光子测控技术教育部重点 实验室 北京 100084) New opportunities with fiber optic networks———— time-frequency synchronization and sensing WANG Bo† CHEN Yu-Feng WANG Guan ( Key Laboratory of Photonic Control Technology (Ministry of Education) ，National Key Laboratory of High Precision Space-time Information Sensing Technology ，Department of Precision Instrument ，Tsinghua University ，Beijing 100084，China ) 摘 要 光纤网络是人类最大的基础设施之一，它支撑着人类社会信息传输与交 互的需求。在通信这一本征功能之外，进一步挖掘光纤网络在精密测量、信息感知等领 域的功能，实现通感算测控一体化，将带来光纤网络的新机遇。文章简要介绍了光纤时 间频率同步的基本原理、研究进展，以及在国际大科学工程——平方公里阵列(SKA)等 射电阵列上的应用。同时，还介绍了光网络振动信息感知的研究进展，特别是在提升振 动定位精度和交通信息感知方面的工作。 关键词 光纤网络，时间频率同步，振动信息感知，时移方差 Abstract As one of the largest infrastructures of human beings, fiber optic networks support the information transmission and communication requirements of our society. In addition, further exploration of their usage in precision measurement, sensing and other fields for the integration of communication, sensing, computing, measurement and control, will be a new opportunity for fiber optic networks. This article briefly reviews the basic principle and research on fiber-based time-frequency synchronization, as well as applications in international scientific megaprojects such as the square kilometer array and other radio arrays. Current research on vibration sensing using optical networks, especially in improving vibration