摘要
为将400 Gbit/s高速率应用于超长站距无中继光传输系统,首先对400 Gbit/s双偏振-四进制正交幅度调制(DP-16QAM)及400 Gbit/s双偏振-八进制正交幅度调制(DP-64QAM)两种高阶调制码型及其对应的光信噪比(OSNR)要求进行了研究,然后通过实验研究了两种码型背靠背OSNR的要求及入纤光功率与误码率的关系,最后搭建了具有前后向拉曼放大器的400 Gbit/s超长距光传输链路,通过实验测试了两种码型对应的最远单跨传输距离。实验结果表明,400 Gbit/s DP-16QAM在G.652光纤上利用双向拉曼光放大器最远可以传输286 km,对于电力长跨距来说基本满足了大部分的应用场合。
In order to realize high transmission rate of 400 Gbit/s per wavelength in ultra-long span optical transmission system.The Optical-to-Signal Noise Ratio(OSNR)performances of high order modulation formats such as Dual Polarization-16 Quadrature Amplitude Mudulation(DP-16 QAM)and DP-64 QAM are studied at first.Then the relationship between launched optical power and Bit Error Ration(BER)is studied by experiments.Finally,the longest transmission distances are tested by using these two modulation formats and a bidirectionally Raman pumped amplifier.The test results show that the 400 Gbit/s DP-16 QAM optical transmission system can reach 286 km by using Raman optical amplifiers,and it’s suitable for most ultra-long span power communication scenarios.
作者
黄丽艳
刘洋
徐健
龙函
孙淑娟
喻杰奎
王文忠
罗清
HUANG Li-yan;LIU Yang;XU Jian;LONG Han;SUN Shu-juan;YU Jie-kui;WANG Wen-zhong;LUO Qing(Accelink Technologies Co.,Ltd.,Wuhan 430205,China)
出处
《光通信研究》
北大核心
2020年第5期17-20,共4页
Study on Optical Communications
关键词
超长站距
高阶调制
相干传输模块
ultra-long span
high order modulation
coherent transmission module
