Xu Tianhua, Shevchenko Nikita A, Lavery Domaniç, Semrau Daniel, Liga Gabriele, Alvarado Alex, Killey Robert I, Bayvel Polina
Opt Express. 2017 Feb 20;25(4):3311-3326. doi: 10.1364/OE.25.003311.
The relationship between modulation format and the performance of multi-channel digital back-propagation (MC-DBP) in ideal Nyquist-spaced optical communication systems is investigated. It is found that the nonlinear distortions behave independent of modulation format in the case of full-field DBP, in contrast to the cases of electronic dispersion compensation and partial-bandwidth DBP. It is shown that the minimum number of steps per span required for MC-DBP depends on the chosen modulation format. For any given target information rate, there exists a possible trade-off between modulation format and back-propagated bandwidth, which could be used to reduce the computational complexity requirement of MC-DBP.
研究了理想奈奎斯特间隔光通信系统中调制格式与多通道数字反向传播（MC-DBP）性能之间的关系。研究发现，与电子色散补偿和部分带宽DBP的情况相比，在全场DBP的情况下，非线性失真的表现与调制格式无关。结果表明，MC-DBP每跨度所需的最小步数取决于所选择的调制格式。对于任何给定的目标信息速率，调制格式和反向传播带宽之间可能存在权衡，这可用于降低MC-DBP的计算复杂度要求。
