毕业设计(论文)
光纤通信系统的仿真分析
电子科技大学中山学院教务处制发
光纤通信系统的仿真分析
摘 要
光纤通信系统是以光为载波，利用纯度极高的玻璃制成极细的光导纤维作为传输媒介，通过光电变换，用光来传输信息的通信系统。
光纤通信系统的计算机仿真，是对此类系统进行规划设计、可行性论证以及研制新型系统的重要手段，可用于对已设计的光纤传输系统在硬件实现之前进行性能评估和可行性论证，可节约大量时间和经费; 同时在分析中可随时改动参数值，便于理论研究。
本文对光纤通信系统的仿真进行了深入的探讨，首先介绍了光纤通信系统的特点及构成，接着对光纤通信系统仿真软件Optisystem的简单介绍并对传输速率为10Gb/s的光纤通信系统进行仿真设计和分析，详细介绍了仿真的流程和分析后的结果并作出总结。
关键词：光纤通信系统；Optisystem；仿真
I
Simulation Analysis of Optical Fiber
Communication System
Abstract
Optical fiber communication system used optical wave as carrier，and very fine optical fiber made of high purity glass as transmission medium. It can transmit information through photoelectric conversion.
Optical fiber communication systems computer simulation is of such systems planning and design，feasibility study and development of new types of systems important means can be used to have been designed optical transmission systems in hardware prior to the performance evaluation and feasibility study，Can save a lot of time and funding，while in the analysis parameters can be changed at any time，for theoretical research.
The paper discusses in depth the simulation of optical fiber communication system，firstly the characteristics and structure of Optical fiber communication system was introduced, then the simulation software (Optisystem) was simply presented, and an optical fiber communication system with transfer rate of 10 Gb/s was simulated and designed, the process and result of simulation was detailed and the summary was made.
Keywords: Optical fiber communication system; Optisystem; simulation
II
目 录
1 绪论 ............................................................................................................................................. 1 1.1 光纤通信概述 ...................................................................................................................... 1 1.1.1 光纤通信的优点 ............................................................................................................ 1 1.1.2 光纤通信的缺点 ............................................................................................................ 2 1.1.3 光纤通信的应用 ............................................................................................................ 3 1.2 系统仿真原理 ...................................................................................................................... 3 2 光纤通信系统及其构成 ............................................................................................................. 5 2.1 光发送机 .............................................................................................................................. 5 2.2 光纤线路 .............................................................................................................................. 5 2.3 光接收机 .............................................................................................................................. 6 2.4 光中继器 .............................................................................................................................. 6 3 光纤通信系统仿真软件 ............................................................................................................. 7 4 数字模型建立与性能仿真分析 ................................................................................................. 8 4.1 发射系统模型的建立 .......................................................................................................... 8
4.1.1 数字模型建立 ................................................................................................................ 8 4.1.2 光源与系统性能关系的仿真分析 ................................................................................ 8 4.2 传输系统模型的建立 ........................................................................................................ 10 4.2.1 数字模型建立 .............................................................................................................. 10 4.2.2 传输速率与光纤传输系统特性的关系 ...................................................................... 11 4.2.3 光纤信道参数与光纤传输系统特性的关系 .............................................................. 13 4.2.4 光放大器对系统性能的影响 ...................................................................................... 17 4.3 接收系统模型的建立 ........................................................................................................ 19 4.3.1 数字模型建立 .............................................................................................................. 19 4.3.2 光电检测器与系统性能关系的仿真分析 .................................................................. 20 4.4 波分复用系统仿真分析 .................................................................................................... 22 5 光纤通信系统仿真实验 ........................................................................................................... 25 5.1 10Gb/s光纤通信系统模型的建立 ..................................................................................... 25 5.2 仿真结果分析 .................................................................................................................... 26 5.3 光纤通信技术的发展现状及趋势 .................................................................................... 28 5.3.1 光纤通信技术的现状 .................................................................................................. 28 6 结论 ........................................................................................................................................... 29 致 谢 ........................................................................................................................................... 30
III
参考文献 ....................................................................................................................................... 31
IV