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20× ×112Gbit/s, 50GHz spaced, PolMux-RZ-QPSK straight-line transmission over 1540km of SSMF employing digital coherent detection and pure EDFA amplification
PolMux-RZ-QPSK SSM digital coherent detection EDFA amplification
2015/8/3
By using PolMux-RZ-QPSK modulation format and digital coherent detection, we have demonstrated 20×112Gbit/s DWDM transmission over 1540km of SSMF without using Raman amplification or optical dispersio...
采用改进的模拟退火算法对Raman/EDFA混合放大器的增益谱进行了优化,根据EDFA及Raman的功率传播方程获得了简洁的目标函数.通过对模拟退火算法几个优化环节的改进,使其能够更快速地应用于Raman/EDFA的多峰值问题的优化设计,可以在短时间内获得最优的放大器参量.计算结果表明选择合适的喇曼抽运波长和抽运功率,仅用4个反向抽运的分布式喇曼放大器加C波段的EDFA就可以获得C+L波段约70 ...