In long lightwave systems with optical amplifiers, fibre nonlinearities cause four-wave mixing so that the signal interacts with the amplified spontaneous emission noise. It is argued that in a system working at overall zero-dispersion the new spectral components act as signal so that the effective amount of noise is no different than in a linear system.
No takes yet. Share an insight, caveat, or question.
D. Marcuse (1994) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: