中文说明: 单和多通道光纤通讯系统色散的影响 近年来目睹了相干光通信的兴趣卷土重来。先进的数字调制格式 (如差分相移键控、 DQPSK 和 MSK 已证明 40gbps 长距离。不过,各种渠道诱导信号障碍,由于半音阶,偏振模色散和非线性效应限制了可实现比特率和距离。这种影响主要是对单通道通信系统. 这项工作使用 MATLAB 仿真建模纳入色散 (CD) 在单通道和多通道 10Gbps RZ — — 差分相移键控光纤传输系统。随机序列的位 (由伯努利二进制生成器生成) 被用于差分相位调制 RZ 脉冲载波 (1.93 x 1014赫兹) Mach Zehnder 光强度调制器的帮助。调制的脉冲然后应用到 CD 块 (通道),从而扩大了每个光谱的组件目前在脉冲量不同,导致跨符号间干扰。使用 BERTool (蒙特 Carlo 模拟) 获得 BER vs 信噪比阴谋,并与理论结果进行比较。BER vs 调查延迟地块为不同的值的群时延和衰减也进行了单通道和四通道带另外的高斯白噪声的系统。最后整个系统的频率域分析了并记录结果。
English Description:
Effects of Chromatic Dispersion in single and multichannel fiber-optic communication systems The recent years have witnessed resurgent interest in coherent optical communications. Advanced digital modulation formats such as DPSK, DQPSK, and MSK have been demonstrated at 40Gbps over long distances. However, various channel induced signal impairments due to chromatic and polarization mode dispersion and nonlinearity limit the achievable bit rate and distance. Such effects have been studied mostly on single channel communication systems. This work uses MATLAB Simulink modeling to incorporate chromatic dispersion (CD) in single channel