A sub-picosecond digital clock monitoring system

被引：2

作者：

Saradhy, Rohith ^{[1
]}

Frahm, Erich ^{[1
]}

Mendes, Eduardo B. S. ^{[2
]}

Rusack, Roger ^{[1
]}

机构：

[1] Univ Minnesota, Minneapolis, MN 55455 USA

[2] CERN, Geneva, Switzerland

来源：

JOURNAL OF INSTRUMENTATION | 2023年 / 18卷 / 01期

关键词：

Digital electronic circuits; Timing detectors;

D O I：

10.1088/1748-0221/18/01/T01003

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe a low-cost system designed to monitor wander in digital clocks with a precision of <= 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 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.

引用

页数：14

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