论文标题
次秒数字时钟监控系统
A Sub-Picosecond Digital Clock Monitoring System
论文作者
论文摘要
我们描述了一种低成本系统，旨在监视数字时钟中的徘徊，精度为$ \ le $ 1 ps。使用此系统，我们已经表明，可以通过向参考时钟添加噪声来跟踪在子皮秒级的相位变化。在许多情况下，时钟是复杂的分布网络的一部分，温度和其他影响可能会导致A时钟阶段的小变化。作为系统的进一步证明，我们已经使用它来测量纤维中光学信号引起的相变。
We describe a low-cost system designed to monitor wander in digital clocks with a precision of $\le$ 1 ps. With this system we have shown that it is possible to track phase variations at the sub-picosecond level by adding noise to a reference clock. As in many cases where a clock is part of a complex distribution network small changes in temperature and other effects can lead to small changes in the a clock's phase. As a further demonstration of the system, we have used it to measure the phase changes induced in optical signals in fibers.
