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
双向传输 分段补偿 非均匀信道间隔 非均匀色散管理 bidirectional transmission step compensation non-uniform channel interval non-uniform dispersion management
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600 km、单信道速率为40 Gbit/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14.9 dB; 对系统进行色散和四波混频抑制后, 系统Q值还可以提高11 dB以上。
Abstract
This paper sets up a simulation model by using the Optisystem for a DQPSK modulation-based single-fiber bidirectional 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 dispersion management. The results indicate that when the transmission distance of an 8-channel 40 Gbit/s WDM transmission system 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 11 dB.
顾均, 关建飞, 李维亮, 朱闻真, 罗霄, 马群. 基于波长移位的单纤双向系统的传输性能仿真[J]. 光通信研究, 2015, 41(5): 15. Gu Jun, Guan Jianfei, Li Weiliang, Zhu Wenzhen, Luo Xiao, Ma Qun. Simulation of transmission performances of wavelength shift-based single-fiber bidirectional systems[J]. Study On Optical Communications, 2015, 41(5): 15.