【作者】 黄涛；

【导师】 周国生；

【作者基本信息】 山西大学 ， 光学， 2004， 硕士

【摘要】 本文从介绍高速光时分复用系统的原理入手，深入地研究了超高速光时分复用系统中色散补偿的特性，并在此基础上得到了线性系统在源啁啾和残余二阶色散的作用下的最佳传输参量。从而为大容量光通信系统的设计和实施提供了理论依据。本文的主要内容如下： 1．综述了高速光时分复用系统的基本原理和关键技术。 2．介绍了高速光时分复用系统中色散补偿技术的实验进展，并详细描述了高速光时分复用系统中四阶色散补偿的基本原理。 3．给出了包含四阶色散的非线性薛定谔方程的推导过程，并给出了非线性薛定谔方程的数值解法。 4．利用包含四阶色散的输出均方根脉宽的表达式，获得了线性超高速光时分复用系统在源啁啾和残余二阶色散的作用下的最佳传输参量。在该最佳参量下，可获得均方根脉宽恢复初始值的最大传输距离。与零平均二阶色散情况相比较，加入残余二阶色散不仅可以在一定程度上延长传输距离，还可以增加系统的稳定性。这些结论也得到了数值解的证实。更多还原

【Abstract】 By introducing the principle of high-speed optical time division multiplexing system, we present the characteristics of higher-order dispersion compensation in ultra high-speed OTDM system, and derive optimum transmission parameters under the effects of source chirping and residual second-order dispersion, which would be helpful to provide some theoretical suggestion for high-bit-rate optical transmission system. The main contents are as follows:1.The main principles and key technology in high-speed OTDM system have been reviewed in detail.2.the progress in experiment of dispersion compensation in high-speed OTDM system has been introduced, especially for fourth-order dispersion.3.The nonlinear Shodinger equation with up to fourth-order dispersion and its’ numerical simulation methord are presented.4.By using the expression for computing the output pulse’s rms time width in an optical fiber link with up to fourth-order dispersion (FOD), we present an expression of maximum fiber-link length, at which the output pulses can return to its original rms time width, in an optical fiber link with up to fourth-order dispersion. The fourth order dispersion is compensated by combination of the effects of proper source chirping and negative residual second-order dispersion. The interesting fact is that the optical pulses can. restore itself at a longest distance even in case of chirp parameter being positive, as well as being negative traditionally. The validity of the analytical formulas is also confirmed by split-step Fourier numerical stimulation.更多还原