频谱高效相干传输中根M形脉冲非线性容限的实验研究。

Experimental investigation on the nonlinear tolerance of root M-shaped pulse in spectrally efficient coherent transmissions.

作者信息

Xu Xian, Zhuge Qunbi, Châtelain Benoît, Chagnon Mathieu, Morsy-Osman Mohamed, Malekiha Mahdi, Qiu Meng, Gao Yuliang, Wang Wei, Plant David V

出版信息

Opt Express. 2015 Jan 26;23(2):882-94. doi: 10.1364/OE.23.000882.

DOI:10.1364/OE.23.000882

PMID:25835848

Abstract

We experimentally demonstrate improved intra-channel nonlinearity tolerance of the root M-shaped pulse (RMP) with respect to the root raised cosine (RRC) pulse in spectrally efficient 128 Gbit/s PDM-16QAM coherent transmission systems. In addition we evaluate the impact of dispersion map and fiber dispersion parameter on the intra-channel nonlinearity tolerance of the RRC pulse and the RMP via both simulation and experimentation. The RMP is shown to have a better nonlinear tolerance than the RRC pulse for most investigated scenarios except for links with zero residual dispersion percentage per span or the zero dispersion region of a fiber. Therefore, the RMP is suitable for extending the maximum reach of spectrally efficient coherent transmission systems in legacy links in addition to currently intensively studied standard single mode fiber (SSMF) based dispersion unmanaged links.

摘要

我们通过实验证明，在频谱高效的128 Gbit/s偏振复用16正交幅度调制（PDM-16QAM）相干传输系统中，相对于根升余弦（RRC）脉冲，根M形脉冲（RMP）的通道内非线性容限得到了改善。此外，我们通过仿真和实验评估了色散图和光纤色散参数对RRC脉冲和RMP的通道内非线性容限的影响。结果表明，在大多数研究场景中，除了每跨距残余色散百分比为零的链路或光纤的零色散区域外，RMP比RRC脉冲具有更好的非线性容限。因此，除了目前深入研究的基于标准单模光纤（SSMF）的无色散管理链路外，RMP还适用于扩展传统链路中频谱高效相干传输系统的最大传输距离。