title: Modulation format dependence of digital nonlinearity compensation performance in optical fibre communication systems.
abstract: 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.
authors.forename: Tianhua
authors.initials: T
authors.lastname: Xu
authors.forename: Nikita A
authors.initials: NA
authors.lastname: Shevchenko
authors.forename: Domaniç
authors.initials: D
authors.lastname: Lavery
authors.forename: Daniel
authors.initials: D
authors.lastname: Semrau
authors.forename: Gabriele
authors.initials: G
authors.lastname: Liga
authors.forename: Alex
authors.initials: A
authors.lastname: Alvarado
authors.forename: Robert I
authors.initials: RI
authors.lastname: Killey
authors.forename: Polina
authors.initials: P
authors.lastname: Bayvel