100 km光纤远端复现超窄线宽激光（英文）  

Recovery of an Ultra-narrow Linewidth Laser over 100km Fiber Link

作　　者：马超群 陈国庆 李磊 辜姣 朱纯 朱焯炜 MA Chao-qun;CHEN Guo-qing;LI Lei;GU Jiao;ZHU Chun;ZHU Zhuo-wei(Institute of Optoelectronic Information Science and Engineering,School of Science, Jiangnan University,Wuxi,Jiangsu 214122,China;Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Jiangnan University,Wuxi,Jiangsu 214122,China)

机构地区：[1]江南大学理学院光电信息科学与工程系,江苏无锡214122 [2]江南大学江苏省轻工光电工程技术研究中心,江苏无锡214122

出　　处：《光子学报》2018年第12期34-39,共6页Acta Photonica Sinica

基　　金：The National Natural Science Foundation of China(No.61378037);the Fundamental Research Funds for the Central Universities(Nos.JUSRP51628B,1142050205180920);the Projects of International Cooperation and Exchanges NSFC(Nos.61511130508,61611130128)

摘　　要：介绍了一种在光纤远端复现超窄线宽激光的方法.将两段50km的光纤线路通过中继站级联在一起.用锁相跟踪法将中继站中的激光器频率锁定在50km光纤远端传输光信号上,跟踪精度达到3.5×10^(-19).为了保持高光谱纯度,两个光纤噪声补偿模块独立工作,用于补偿每段50km光纤引入的相位噪声.这种级联方案能够确保噪声补偿具有较大的动态范围.经补偿后,100km光纤引入的频率不稳定度达到5.9×10^(-17)(1s平均时间),10 000s后达到6.8×10^(-19).实现了在100km光纤远端复现超窄线宽激光,附加线宽低至1mHz.It is demonstrated that an ultranarrow linewidth laser is recovered after transfer through a 100 km fiber link.The fiber link consists of two 50 km spolled fibers cascaded by a repeater station where a transceiver laser is phase-locked to the transferred light of the 50 km fiber with tracking precision of 3.5×10^-19.To maintain the high spectral purity,two fiber noise compensation modules are employed to compensate for the fiber-induced phase noise in each 50 km fiber.The cascaded scheme enables a large dynamic range for the noise compensation.The fractional frequency instability for the stabilized 100 km fiber is 5.9×10^-17 at 1 s averaging time,reaching 6.8×10^-19 at 10 000 s.The ultranarrow linewidth laser is recovered at the remote end of the 100 km fiber with additional linewidth of 1 mHz.

关 键 词：光学频率 超窄线宽激光 精密传输 光纤相位噪声 中继站 

分 类 号：O43[机械工程—光学工程]