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Quantum Electronics and Laser Science Conference

Information capacity of nonlinear fiber-optical systems

Boyu Wu, E. Narimanov

Published Dec 10, 2005• 2 citations
Publisher

Abstract

We develop information-theoretical description of nonlinear optical communication systems. We present a non-perturbative calculation of the information capacity for different modulation formats, and demonstrate that fiber nonlinearity leads to exponential suppression of the channel capacity.
DOI
10.1109/qels.2005.1549280

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We analyze the information-capacity limitations of the optical communication channel, as determined by noise accumulation from optical amplification and nonlinear wave-mixing. We review the concepts of signal-to-noise ratio and entropy for binary-coded and continuous communications, leading to a definition of ultimate capacity for the optically-amplified channel. A unified quantum model, describing both amplification and nonlinearity limitations, makes possible to determine the power transmission window within which the channel capacity can be maximized.