摘要
光信号传输特性的研究是光通信网络仿真分析的关键问题。文中通过光传输仿真软件OpticSimu仿真分析了G.652光纤中光信号的传输特性。仿真结果表明:在不考虑非线性影响的情况下,当中心频率、发射功率和啁啾等参数相同时,传输距离越长,比特率越大,由群速度色散引起的信号失真就越明显。通过减小光源信号的初始啁啾可以降低光信号在信道中的传输失真,提高光信号的传输质量。
Study on optical signal transmission characteristic is the key point for optical communication network simulation.Optical signal transmission characteristic in the G.652 fiber is analyzed by simulation software OpticSimu in this paper.Simulation results show that,without taking into account the non-linear effect and in the same condition,the longer the transmission distance,the greater the bit rate,the signal distortion caused by the group velocity dispersion is more obvious.Through reducing the initial chirp of optical signal,the distortion could be reduced in fiber-optic transmission,and also the transmission quality is improved.
出处
《通信技术》
2010年第3期45-46,190,共3页
Communications Technology
基金
国家自然科学基金资助项目(批准号:60572129)
安徽大学博士毕业科研启动项目(批准号:02203105)
