文档介绍：2
电子测量技术第 30 卷第 11 期
测试系统与组件
EL ECTRONIC MEASUREM EN T TECHNOLO GY 2007 年 11 月
9 9
9 9
光纤色散脉冲展宽分析仪的研制
赵同刚李蔚任建华
(北京邮电大学电子工程学院北京 100876)
摘要: 光纤色散特性会引起传输信号的畸变,限制通信容量。对光纤色散参数,光信号在长距离传输后脉冲展宽程
度进行准确测量,可以为工程人员在设计高速光通信系统设计时提供可靠设计数据来源,在实际的工程应用中有着重
要意义。本文理论上分析了光脉冲在光纤中传播的展宽现象,重点介绍了光纤色散分析仪的设计方案,最后,自行研
制了一套用于色散测量的脉冲展宽设备,对标准多模光纤进行了脉冲展宽的测试,测量结果和出厂测试结果相吻合。
关键词: 色散; 脉冲展宽; 自动功率控制
中图分类号: TM935. 4 文献标识码: A
Manufacture of chromatic dispersion impulse expanding
analytic device in optical f iber
Zhao Tonggang Li Wei Ren Jianhua
(School of Electronic & Engineering , Beijing University of Posts and munications , Beijing 100876)
Abstract : Chromatic dispersion in optical fiber would cause distortion to transmitting signal and restrict capability of
the optical munication. Accurate measurement for the parameters of chromatic dispersion and the expanding of
the optical pulse are of great importance after long distance transmission which can provide reliable reference for
engineer in high speed munication system design. In this paper , the pulse expanding is analyzed
theoretically. The design idea of chromatic dispersion analytic apparatus is introduced emphatically. Finally , a set of
apparatus for measuring chromatic dispersion of multimode fibers is manufactured. Using this device , a standard multi
mode optical fiber is measured , of which the result is