关于光纤通信的论文.doc

本科学生毕业论文
论文题目:
波分复用的光纤通信技术
学院:
电子工程学院
年级:
2009级
专业:
通信工程
姓名:
张琦
学号:
20091400
指导教师:
刘勇
2012 年 5 月 7日
摘要
近年来,通信行业发展迅速,大量的通信新业务不断涌现,信息高速公路正在全球范围内以惊人的速度发展建立起来。所有这些应用都对大容量通信提出了越来越高的要求,使得光纤通信技术向着速度高、容量大、可伸缩性好的方向发展。
波分复用(WDM)系统的发展正是适应了这一时代潮流。应用这种技术可以在同一根光纤上传输多路信道,从而使通信容量成倍的扩大。不过,随着掺铒放大器(EDFA)在系统中的大量使用,也会带来一系列相关问题,如:色散、增益失衡、非线性效应等等。在建立一个WDM光纤通信系统的时候,必须很好地解决这些问题。在本文中,将讨论这些WDM系统的关键技术,并给出一个WDM光纤通信系统的总体设计。主要工作如下:
,重点讨论实现WDM系统的关键技术和如何克服色散、增益失衡和非线性等影响性能的因素。
-T系列参考标准和信息产业部的相关标准,进行32×10 Gbit/s480km的WDM光纤通信系统总体设计和规划。给出系统的详细参数并对系统性能进行相关计算,讨论优化系统的技术和手段。
关键词
WDM;光纤通信;传输系统;大容量系统
Abstract
munication industry develop very fast,a large munication services appered,the world is now building Cyber-high way. All these bring the need for larger and munication capacity,which stimulate munication system develop towards adaptive,high speed,large capacity data transmission.
Wavelength division multiplexing (WDM) system developed following the trend. The system can greatly increase the transmission capacity by increasing th channels in a single fiber. But multi-wavelength transmission and thd employment of Erbiumdoped Droped Fiber Amplifier (EDFA) will cause a number of new problems,such as chromatic dispersion,gain fluctuation,fluctuation and non-linear effects etc. Ths problems should be solved in building WDM fiber transmission system. In this paper,the key technologeis in WDM system are discussed. The main parts in this project are as follows:
on the widely studing of references,the development on the theory and experiments of WDM system is reviewed. The degradation of the performance of the system,which is caused by chromatic dispersion,gain fluctuation and fluctuation and non-linear effects in fiber,is analysed and some scenarios are suggested to solve them.
on the revelant standards of ITU-T and related references,is designed. The general scheme of 32 X 10Gbit/s 480km WDM transmission system are designed f