摘要
针对日益提高的高精度原子钟时间频率比对的需求,给出基于光纤链路的远距离高精度时间同步设计。在65 km光纤双向时间同步链路的基础上通过引入中继提高光纤传输距离,在180 km的光纤链路上实现了远距离时间同步,双向时间同步精度为153 ps。试验结果表明,添加掺铒光纤放大器进行远距离光纤时间信号传递是可以实现的,突破了单段光纤传输距离小于100 km的限制。
Aiming at the increasing demand for high-precision atomic clock time-frequency comparison,this paper presents longdistance high-precision time synchronization system based on optical fiber links.Based on the 65 km fiber bidirectional time synchronization link,this paper improves the fiber transmission distance,realizing long-distance time synchronization on the 180 km fiber link,and the bidirectional time synchronization accuracy is 153 ps.The experimental results show that the addition of erbium-doped fiber amplifiers for long-distance fiber time signal transmission can be achieved,breaking through the limit of single-segment fiber transmission distance less than 100 km.
作者
王正勇
王崇阳
魏海涛
尹继凯
蔚保国
WANG Zhengyong;WANG Chongyang;WEI Haitao;YIN Jikai;YU Baoguo(State Key Laboratory of Satellite Navigation System and Equipment Technology,Shijiazhuang 050081,China)
出处
《无线电工程》
2019年第5期404-407,共4页
Radio Engineering
基金
国家自然科学基金资助项目(91638203)
关键词
光纤
时间同步
掺铒光纤放大器
高精度
optical fiber
time synchronization
erbium doped fiber amplifier
high precision
