摘要
对传输容量为8×2.5 Gbit/s,传输距离为1000 km的波分复用系统进行了仿真实验。在考虑系统非线性效应的情况下,对信道间隔在完全等间距、不等间距以及部分等间距三种不同方案下进行了数值仿真。仿真结果表明:完全等间距时,信道间隔越大,系统受非线性效应影响越小,性能越好;不等间距时,不同信道的性能差异大,且系统带宽利用率低;部分等间距设置下,兼顾了非线性效应对系统性能恶化和系统占用带宽的矛盾,较其他两种信道间隔设置方案而言系统性能最佳。
The WDM system with transmission capacity of 8 × 2. 5 Gbit/s and transmission distance of 1000 km is simulated. Considered nonlinear effects, under the three different conditions with complete equal spacing, unequal spacing and partly unequal spacing in channel intervals, the transmission performances are simulated respectively. The results demonstrate that the greater the channel interval is, the less the non-linear impacts affect the system and the better performance of transmission system will be. When channel spacing is unequal, the performances of all channels are very different. The utilization of the system bandwidth also becomes low. Taking into account of the nonlinear effect on system performance and the utilization of system bandwidth, the performances of partly unequal channel spacing is better than others.
出处
《浙江工业大学学报》
CAS
2008年第5期514-518,共5页
Journal of Zhejiang University of Technology
