基于波长移位的单纤双向系统的传输性能仿真  

Simulation of transmission performances of wavelength shift-based single-fiber bidirectional systems

作　　者：顾均[1] 关建飞[1] 李维亮[1] 朱闻真 罗霄[1] 马群[1] 

机构地区：[1]南京邮电大学光电工程学院,南京210023

出　　处：《光通信研究》2015年第5期15-18,共4页Study on Optical Communications

摘　　要：利用Optisystem仿真软件搭建了基于DQPSK(差分正交相移键控)编码的WDM(波分复用)单纤双向传输系统,实现系统传输扩容;同时提出采用分段色散补偿方法抑制色散对系统的影响,利用非均匀信道间隔设置和非均匀色散管理降低四波混频效应。结果表明:在传输距离为600km、单信道速率为40Gbit/s的8信道WDM系统中,单纤双向传输时系统的品质因子(Q值)比单纤单向传输系统最大提高了14.9dB;对系统进行色散和四波混频抑制后,系统Q值还可以提高11dB以上。This paper sets up a simulation model by using the Optisystem for a DQPSK modulation-based single-fiber bidirec-tional WDM transmission system for performing system capacity expansion,inhibiting the effects of dispersion on the system by step dispersion compensation and reducing the FWM effects by non-uniform channel interval setting and non-uniform disper-sion management.The results indicate that when the transmission distance of an 8-channel 40 Gbit/s WDM transmission sys-tem is 600 km,the Q factor of a single-fiber bidirectional transmission is improved by 14.9 dB to the maximum compared with a single-fiber unidirectional transmission system.Furthermore,when the dispersion and FWM effects are inhibited,the system Q factor can be improved by over 1 1 dB.

关 键 词：双向传输 分段补偿 非均匀信道间隔 非均匀色散管理 

分 类 号：TN914[电子电信—通信与信息系统]