基于光通信色散管理技术的非线性效应与色散补偿性能研究

Research on non-linear effect and dispersion compensasion based on optical communication management technology

为提高长距离、高速率光纤通信系统性能,提出了基于后置补偿方案的非完全补偿技术。分别采用前置、后置、对称色散管理方案,搭建了10 Gb/s和40 Gb/s传输系统,为进一步研究非线性效应与色散补偿关系,首先从单信道系统入手,分析系统残余色散与非线性效应关系,其次搭建了8×40 Gb/s波分复用系统,引入了自相位调制和不同信道间的交叉相位调制效应。结果表明:在低速率和高速率通信场合中,后置和对称补偿方案都要优于前置。采用后置补偿技术时,完全色散补偿适用于低入射光功率,而非完全补偿则在高入射光功率时可让系统保持更好的性能,Q值可达到8.9。

In order to improve the performance of long-hual high-speed optical fiber communication system,an incomplete compensation technique based on the post-compensation scheme is proposed. The 10 GB/s and 40 Gb/s transmission system are built by utilizing preposition,post-position and symmetrical dispersion scheme respectively.Furthermore,for investigating the relationship between non-linear effect and dispersion,the single channel has been setup firstly. Then,8×40 Gb/s wavelength division multiplexing system has also been set up,where the effect of selfphase modulation and the cross-phase modulation are introduced. The results show that post-compensation and symmetrical compensation scheme are better than the pre-compensation in the low-speed and high-speed communication occasions. Besides,the complete compensation is suitable to systems in low incident power while the incomplete compensation can perform better in high incident power,where the value of Q factor is up to 8. 9.