This work presents an experimental evaluation of single-channel long-distance transmission over a homogeneous single-mode multicore fiber. We compare the detection of 20 GBaud polarization-multiplexed quadrature-phase-shift-keyed signals with and without the use of high-order multiple-input multiple output systems, to undo crosstalk-induced degradation, combined with digital back-propagation to undo fiber nonlinearity-induced degradation. It is shown that these techniques combined enable a transmission reach increase of 28%.

中文翻译：

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长距离、支持 MIMO 的多芯光纤传输中的数字反向传播

这项工作提出了在同质单模多芯光纤上进行单通道长距离传输的实验评估。我们比较了使用和不使用高阶多输入多输出系统的 20 GBaud 偏振复用正交相移键控信号的检测，以消除串扰引起的退化，结合数字反向传播以消除光纤非线性引起的退化。结果表明，这些技术相结合使传输范围增加了 28%。