基于信号占空比不同的波分复用系统的研究

The Research of DCDM-WDM in Optical Communication System

提出了一种未来能够更好地利用光纤传输容量的方法,即基于占空比不同的波分复用系统(DCDM-WDM系统),它可以在WDM每一个波长上实现多用户的传输。本文设计的是3×8路的DCDM-WDM系统,可以同时实现24个用户的传输。并利用matlab设计了系统的解复用器,通过matlab和optisystem软件的联合仿真验证了系统的可行性。DCDM-WDM系统增加了WDM的信道数,极大地提高了光纤的传输容量和频谱效率,对于现代通信系统的研究有着重大的意义。

Wavelength division multiplexed optical communication system is frist desighed based on duty cycle division multiplexing.The system features multiplexing of the basebands in DCDM as well as multiplexing in WDM.The design is proposed for 3×8 users at the same time.Design the demultiplexer of system by using matlab and simulate using optisystem and matlab.DCDM-WDM system increases the number of WDM channel,greatly improves the optical fiber transmission capacity and spectrum efficiency.