Abstract

We revisit the problem of estimating the nonlinear channel capacity of fiber-optic systems. By taking advantage of the fact that a large fraction of the nonlinear interference between different wavelength-division-multiplexed channels manifests itself as phase noise, and by accounting for the long temporal correlations of this noise, we show that the capacity is notably higher than what is currently assumed. This advantage translates into nearly doubling of the link distance for a fixed transmission rate.

© 2014 Optical Society of America

Nonlinear communication channels with capacity above the linear Shannon limit

Konstantin S. Turitsyn and Sergei K. Turitsyn
Opt. Lett. 37(17) 3600-3602 (2012)

Joint Channel Estimation, Interference Mitigation, and Decoding for WDM Coherent Optical Communications

Frederic Lehmann, Petros Ramantanis, and Yann Frignac
J. Opt. Commun. Netw. 6(3) 315-325 (2014)

Ripple distribution for nonlinear fiber-optic channels

Mariia Sorokina, Stylianos Sygletos, and Sergei Turitsyn
Opt. Express 25(3) 2228-2238 (2017)

Beneficial use of spectral broadening resulting from the nonlinearity of the fiber-optic channel

Eado Meron, Mark Shtaif, and Meir Feder
Opt. Lett. 37(21) 4458-4460 (2012)

Analytical results on channel capacity in uncompensated optical links with coherent detection

G. Bosco, P. Poggiolini, A. Carena, V. Curri, and F. Forghieri
Opt. Express 19(26) B440-B451 (2011)