高稳定性和超低抖动定时信号的远程传输。

Remote transfer of a high-stability and ultralow-jitter timing signal.

作者信息

Holman Kevin W, Hudson Darren D, Ye Jun, Jones David J

机构信息

JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA.

出版信息

Opt Lett. 2005 May 15;30(10):1225-7. doi: 10.1364/ol.30.001225.

DOI:10.1364/ol.30.001225

PMID:15943317

Abstract

Transfer of a high-stability and ultralow-jitter timing signal through a fiber network via a mode-locked fiber laser is demonstrated. With active cancellation of the fiber-transmission noise, the fractional instability for transfer of a radio-frequency signal through a 6.9- (4.5-) km round-trip installed (laboratory-based) fiber network is below 9(7) x 10(-15) tau(-1/2) for an averaging time tau > or = 1 s, limited by the noise floor of the frequency-counting system. The noise cancellation reduces the rms timing jitter, integrated over a bandwidth from 1 Hz to 100 kHz, to 37 (20) fs for the installed (laboratory-based) fiber network, representing what is to our knowledge the lowest reported jitter for transfer of a timing signal over kilometer-scale distances using an installed (laboratory-based) optical-fiber network.

摘要

通过锁模光纤激光器在光纤网络中传输高稳定性、超低抖动定时信号的过程得到了演示。通过主动消除光纤传输噪声，对于通过6.9千米（4.5千米）往返的已安装（基于实验室）光纤网络传输的射频信号，当平均时间τ≥1秒时，分数不稳定性低于9×10⁻¹⁵（7×10⁻¹⁵）τ⁻¹/²，受频率计数系统的本底噪声限制。对于已安装（基于实验室）的光纤网络，噪声消除将在1赫兹至100千赫兹带宽上积分的均方根定时抖动降低到37（20）飞秒。据我们所知，这代表了使用已安装（基于实验室）的光纤网络在千米级距离上传输定时信号时所报告的最低抖动。