太赫兹科学与电子信息学报, 2018, 16 (6): 1109, 网络出版: 2019-06-10
用于星光III激光同步系统的低抖动时钟整形技术
A low jitter clock reshaping technology for XG-III laser system
脉冲宽度 本底噪声 低抖动 时钟整形 信号完整性 pulse width noise floor low jitter clock reshaping signal and power integrity
摘要
针对参考时钟源高电平脉冲宽度窄(小于2?ns)和本底噪声大的问题，通过使用一种时钟低抖动整形技术方案，使参考时钟经过锁相整形后高电平脉冲宽度大于3?ns、锁相相位时间抖动均方根(RMS)值小于5?ps。目前该方案已成功用于星光III激光装置的联机实验，情况良好，对其他类似需要精密时钟的装置具有极大的借鉴意义。
Abstract
A low jitter clock shaping scheme is proposed, which solves the problem of high pulse with narrow width(less than 2?ns) and large noise floor of the reference clock source. The technical specifications achieved are the high reference clock pulse width greater than 3?ns, phase-locked phase jitter Root Mean Square(RMS) less than 5?ps after Phase Locked Loop(PLL). And the signal integrity simulation design verification is further realized through the Input/Output Buffer Information Specification (IBIS) model. At present, the scheme has been successfully used in online experiment of XG-III laser device and is in good condition. It is of great reference to the accurate implementation of the synchronization system of radiation sources in different frequency bands.
刘亚迪, 王超, 党钊, 陈骥. 用于星光III激光同步系统的低抖动时钟整形技术[J]. 太赫兹科学与电子信息学报, 2018, 16(6): 1109. LIU Yadi, WANG Chao, DANG Zhao, CHEN Ji. A low jitter clock reshaping technology for XG-III laser system[J]. Journal of terahertz science and electronic information technology, 2018, 16(6): 1109.
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