线宽增长因子对光纤色散传输系统的影响  

Effects of linewidth broadening factor on optical fiber dispersion-supported transmission system

作　　者：赵同刚[1] 吴永刚[1] 任建华[1] 赵荣华[1] 林金桐[1] 

机构地区：[1]北京邮电大学电子工程学院,北京100876

出　　处：《光通信研究》2004年第2期51-54,共4页Study on Optical Communications

摘　　要：文章讨论了半导体激光器频率啁啾产生的物理机制 .利用波动方程 ,得到了线宽增长因子同光源线宽的关系 ;重点分析了激光器方程中的线宽增长因子和光纤通信系统中啁啾参数的一致性 ;并以线宽增长因子为切入点 ,将高斯脉冲作为信号源 ,数值解光纤传输的非线性薛定谔方程 ,考察了线宽增长因子和群速度色散共同对光纤通信系统传输性能的影响 .In this paper, the basic theory of frequency chirp in semiconductor lasers is discussed. The relation between linewidth broadening factor and semiconductor's linewidth can be obtained by utilizing wave equations. The consistence between linewidth broadening factor and chirp parameter in optical fiber communication system is analyzed emphatically. Using Gaussian pulse as signal source, we study the effect of linewidth broadening factor and group velocity dispersion together on the performance of optical fiber communication system by solving nonlinear Schrdinger equation.

关 键 词：线宽增长因子 光纤通信 啁啾参数 色散 半导体激光器 

分 类 号：TN929.11[电子电信—通信与信息系统] TN248.4[电子电信—信息与通信工程]