Nonlinear compensation with DBP aided by memory polynomial
Gonçalves, JPFG
; Martins, C. M.
;
Guiomar, F. P.
; Cunha, T.R.
;
Pedro, J. C.
;
Pinto, A. N.
;
Lavrador, P.M.L.
Optics Express Vol. 24, Nº 26, pp. 30309 - 30316, December, 2016.
ISSN (print):
ISSN (online): 1094-4087
Scimago Journal Ranking: 1,53 (in 2016)
Digital Object Identifier:
Abstract
Using digital backpropagation (DBP) based on the split step Fourier method (SSFM) aided by a memory polynomial (MP) model, we demonstrate an improved DBP approach for fiber nonlinearity compensation. The proposed technique (DBP-SSFM&MP) is numerically validated and its performance and complexity are compared against the benchmark DBP-SSFM, considering a single-channel 336 Gb/s PM-64QAM transmission system. We demonstrate that the proposed technique allows to maintain the performance achieved by DBP-SSFM, while decreasing the required number of iterations, by over 60%. For a transmission length of 1600 km we obtain a complexity reduction gain of 50.7% in terms of real multiplications in comparison with the standard DBP-SSFM.
