色散缓变光纤中不同群色散剖面下的啁啾  

Chirp in Dispersion-decreasing Fibers of Different Dispersion-decreasing Profiles

作　　者：王珍丽[1] 王晶[1] 任志君[1] 王进[1] 

机构地区：[1]中国海洋大学物理系,青岛266071

出　　处：《光子学报》2004年第2期183-186,共4页Acta Photonica Sinica

摘　　要：从啁啾的角度讨论了不同群色散剖面函数对色散缓变光纤的意义 发现指数型色散缓变光纤中初始啁啾对GVD所致啁啾的影响最小 ,在指数型、线型、对数型和高斯型色散缓变光纤中GVD所致啁啾具有同非线性效应所致啁啾相似的饱和性 ,二者相消 ,使净啁啾趋于零 在孤子通信系统中 。From the aspect of chirp, six types of dispersion-decreasing profiles′(DDP) effects on dispersion-decreasing fiber(DDF) are discussed. It′s found that the GVD-caused chirp in the exponential type of DDF is least likely to be affected by the initial chirp,the GVD-caused chirp in exponential, linear,Logarithm and Guassian types of DDF has the synchronous character of saturation as the nonlinear-effect-caused chirp ,and the two kinds of chirp are found to counteract to balance, which makes the sum chirp tend to be zero. The conclusion is obtained as that the type of exponential is of the most practical value for soliton communications system.

关 键 词：啁啾 色散缓变光纤(DDF) 群色散剖面 群速度色散(GVD) 

分 类 号：TN929.11[电子电信—通信与信息系统]