Xin Ming, Safak Kemal, Peng Michael Y, Callahan Patrick T, Kärtner Franz X
Opt Express. 2014 Jun 16;22(12):14904-12. doi: 10.1364/OE.22.014904.
Long-term stable timing distribution over a 3.5-km polarization maintaining (PM) fiber link using balanced optical cross-correlators (BOC) for optical-to-optical synchronization is demonstrated. Remote laser synchronization over 40 hours showed a residual timing jitter and drift of 2.5 fs for the whole locking period and only 1.1 fs integrated from 100 μHz to 1 MHz. This result corresponds to the lowest jitter and drift achieved to date for a multi-km fiber link and remote timing synchronization operating continuously over multiple days.
利用平衡光学互相关器（BOC）实现光到光同步，在3.5公里的保偏（PM）光纤链路上展示了长期稳定的定时分布。超过40小时的远程激光同步显示，在整个锁定期间残余定时抖动和漂移为2.5飞秒，从100微赫兹到1兆赫兹积分仅为1.1飞秒。该结果对应于迄今为止在多公里光纤链路和连续运行多天的远程定时同步中实现的最低抖动和漂移。
