Distributed-Raman-amplification effect on pulse interactions and collisions in long-haul dispersion-managed soliton transmissions

摘要

We study the effect of distributed Raman amplification on strongly dispersion-managed soliton interactions and collisions in N x 20 Gbit/s wavelength-division-multiplexed long-haul transmissions. The measured reduction of noise accumulation with Raman amplification permits determination of the allowable reduction of signal power, when compared with the case of lumped erbium-doped fiber amplifiers. Hence we analytically estimate the reduction of intrachannel interactions and interchannel collisions induced by distributed Raman amplification and evaluate the corresponding decrease of timing jitter. (C) 2002 Optical Society of America. [References: 14]