Achievable information rates estimates in optically amplified transmission systems using nonlinearity compensation and probabilistic shaping

D. Semrau, Tianhua Xu, N.A. Shevchenko, M. Paskov, A. Alvarado, R.I. Killey, P. Bayvel

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Achievable information rates (AIRs) of wideband optical communication systems using a ∼40  nm (∼5  THz)
∼40  nm (∼5  THz)
erbium-doped fiber amplifier and ∼100  nm (∼12.5  THz)
∼100  nm (∼12.5  THz)
distributed Raman amplification are estimated based on a first-order perturbation analysis. The AIRs of each individual channel have been evaluated for DP-64QAM, DP-256QAM, and DP-1024QAM modulation formats. The impact of full-field nonlinear compensation (FF-NLC) and probabilistically shaped constellations using a Maxwell–Boltzmann distribution were studied and compared to electronic dispersion compensation. It has been found that a probabilistically shaped DP-1024QAM constellation, combined with FF-NLC, yields achievable information rates of ∼75  Tbit/s
∼75  Tbit/s
for the EDFA scheme and ∼223  Tbit/s
∼223  Tbit/s
for the Raman amplification scheme over a 2000 km standard single-mode fiber transmission.
Original languageEnglish
Pages (from-to)121-124
Number of pages4
JournalOptics Letters
Issue number1
Publication statusPublished - 1 Jan 2017

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