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面向XFEL的km级光纤链路的fs精度时钟分布

Femtosecond precision timing distribution over km level stabilized fiber link for application in XFEL

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摘要

报道了一种基于光纤链路的飞秒精度的时钟分布方案。一台被动锁模的光纤飞秒激光器输出的超短脉冲序列作为主时序,通过2 km的普通单模光纤链路分发,利用平衡光学互相关技术探测传输中积累的时钟延迟误差,由光纤拉伸器和步进电机相结合在本地主动补偿,在2 h内的时钟分布稳定度优于10-18,时钟延迟标准差为1.1 fs。

Abstract

This paper demonstrates a fiber link based timing distribution with femtosecond precision. The output femtosecond laser pulse train from a passively mode-locked fiber laser serves as master clock, which is distributed over a 2 km single mode fiber link. A balanced optical cross-correlator (BOC) is used to monitor the accumulated timing error, which is actively compensated by a local fiber stretcher and a step motor. The standard deviation of the residual timing error is less than 1.1 fs over 2 h observation, and the time stability is better than 10-18.

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中图分类号:TN24

DOI:10.11884/hplpb201628.055102

所属栏目:加速器技术

基金项目:国家自然科学基金项目(11274239, 61535009, 61308061); 天津市应用基础与前沿技术研究计划项目(13JCQNJC01400); 高等学校博士学科点专项科研基金项目(新教师类,20120032120071)

收稿日期:2015-11-02

修改稿日期:2015-12-29

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马春阳:天津大学 精密仪器与光电子工程学院, 光电信息技术科学教育部重点实验室, 天津 300072
宋有建:天津大学 精密仪器与光电子工程学院, 光电信息技术科学教育部重点实验室, 天津 300072
刘新宇:天津大学 精密仪器与光电子工程学院, 光电信息技术科学教育部重点实验室, 天津 300072
李 晶:中国电子科技集团公司 第五十四研究所 遥控遥测专业部, 石家庄 050081
刘友永:中国电子科技集团公司 第五十四研究所 遥控遥测专业部, 石家庄 050081
胡明列:天津大学 精密仪器与光电子工程学院, 光电信息技术科学教育部重点实验室, 天津 300072
王清月:天津大学 精密仪器与光电子工程学院, 光电信息技术科学教育部重点实验室, 天津 300072

联系人作者:马春阳(machunyang@tju.edu.cn)

备注:马春阳(1992-),男,硕士研究生,从事飞秒激光精密测量研究

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引用该论文

Ma Chunyang,Song Youjian,Liu Xinyu,Li Jing,Liu Youyong,Hu Minglie,Wang Qingyue. Femtosecond precision timing distribution over km level stabilized fiber link for application in XFEL[J]. High Power Laser and Particle Beams, 2016, 28(5): 055102

马春阳,宋有建,刘新宇,李 晶,刘友永,胡明列,王清月. 面向XFEL的km级光纤链路的fs精度时钟分布[J]. 强激光与粒子束, 2016, 28(5): 055102

被引情况

【1】田昊晨,宋有建,马春阳,胡明列,王清月. 两台独立飞秒激光器的脉冲序列与载波包络相位同步. 中国激光, 2016, 43(8): 801003--1

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