40 Gb/s窄脉冲预啁啾归零码色散管理传输  

40 Gb/s Dispersion Managed Transmission by Using Prechirped Return-to-Zero Format with Low Duty-Cycle

作　　者：李智红[1] 娄采云[1] 高以智[1] 

机构地区：[1]清华大学电子工程系激光教研组,北京100084

出　　处：《光学学报》2002年第8期937-941,共5页Acta Optica Sinica

基　　金：国家自然科学基金 (6 0 0 72 0 17;6 0 1770 19);国家 86 3高技术资助课题

摘　　要：通过数值计算的方法 ,对 4 0Gb s带有预啁啾和无啁啾的窄脉冲归零码在色散管理光纤链路中的传输特性进行了比较。计算发现 ,脉冲的预啁啾会与光纤的高阶色散共同作用 ,并增强高阶色散对传输的影响。只有在高阶色散得到很好补偿以后 ,窄脉冲带啁啾的归零码 (CRZ)的传输特性才会好于无啁啾的归零码。Numerical simulations have been used to compare the transmission performance between low duty cycle RZ format with and without prechirping. It is shown that, pulse prechirping will act accompany with the second-order dispersion of the fiber and enhanced their effect to transmission performance. After slope compensation, prechirping of pulses is demonstrated to be helpful both in reducing pulse distortion and nonlinear interaction, and the transmission characteristic of the properly prechirped pulse with certain power level is better than that of non prechirping pulses. Moreover, the prechirping can be optimized to obtain the best transmission performance.

关 键 词：窄脉冲 色散管理 预啁啾 归零码 数值模拟 光纤通信 非线性效应 

分 类 号：TN929.11[电子电信—通信与信息系统]