Modulation format dependence of digital nonlinearity compensation performance in optical fibre communication systems

作者：Xu Tianhua^*; Shevchenko Nikita A; Lavery Domanic; Semrau Daniel; Liga Gabriele; Alvarado Alex; Killey Robert I; Bayvel Polina

来源：Optics Express, 2017, 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.

• 出版日期2017-2-20