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

作者：Semrau Daniel; Xu Tianhua^*; Shevchenko Nikita A; Paskov Milen; Alvarado Alex; Killey Robert I; Bayvel Polina

来源：Optics Letters, 2017, 42(1): 121-124.

DOI：10.1364/OL.42.000121

Achievable information rates (AIRs) of wideband optical communication systems using a similar to 40 nm (similar to 5 THz) erbium-doped fiber amplifier and similar to 100 nm (similar to 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 similar to 75 Tbit/s for the EDFA scheme and similar to 223 Tbit/s for the Raman amplification scheme over a 2000 km standard single-mode fiber transmission.

• 出版日期2017-1-1