Abstract

We extend the Shannon information theory to a nonlinear system and present a model for calculating the channel capacity of an optical-fiber transmission system using dispersion-free fiber. For this particular fiber,a closed-form solution for the nonlinear Schroedinger equation exists. This allows us to derive an analytical result for the channel capacity that is exact and valid for arbitrary input power. We will study the single-span case and examine the dependence of the capacity on operating input power, the number of channels (Nc), the noise power (PW), etc. The maximum capacity is shown to follow a simple scaling law with log2(1+CNc-2/3PW-2/3) dependence.

[IEEE ]

Nonlinear communication channels with capacity above the linear Shannon limit

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

New bounds on the capacity of the nonlinear fiber-optic channel

Ronen Dar, Mark Shtaif, and Meir Feder
Opt. Lett. 39(2) 398-401 (2014)

Dispersion-dominated nonlinear fiber-optic channel

Sergei Turitsyn, Mariia Sorokina, and Stanislav Derevyanko
Opt. Lett. 37(14) 2931-2933 (2012)

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)

Ripple distribution for nonlinear fiber-optic channels

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