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요약정보
利用光锁相环路实现40 Gb/s时钟恢复 / 40 Gb/s Clock Recovery Based on Optical Phase-Locked Loop
Resource Type
Academic Journal
Authors
权爽
;
姚敏玉
;
张洪明
;
张鋆
;
Quan Shuang
;
Yao Minyu
;
Zhang Hongming
;
Zhang Jun
Source
光学学报 / ACTA OPTICA SINICA
. 27(8):1382-1386
Subject
光纤通信
时钟恢复
光锁相环路
高非线性光纤
压控光脉冲源
Language
Chinese
ISSN
0253-2239
Online Access
Scopus
Find it @ DONGA
초록
提出并建立了一种新型的基于光纤四波混频效应和压控光脉冲源的光锁相环路(OPLL),用于光时分复用系统(OTDM)中的时钟恢复过程.从理论上分析了其工作原理,及各模块结构和功能.利用高非线性光纤中的四波混频效应实现全光鉴相器,有效缩短了光纤长度,减小了光纤色散引起的脉冲走离,鉴相器消光比超过30 dB.采用再生锁模光纤激光器实现压控光脉冲源,在保证脉冲质量的前提下,重复频率调节范围达到380 kHz.在40 Gb/s时钟恢复实验中,获得脉宽为7.2 ps、接近变换极限的时钟脉冲,时间抖动(RMS)为152 fs,超模抑制比大于60 dB.实验证明,输入信号幅度波动和码型效应对环路影响很小.
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