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.
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)
出处
《光子学报》
EI
CAS
CSCD
北大核心
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)
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
Optical frequency
Ultranarrow linewidth laser
Precision transfer
Fiber phase noise
Repeater station
