Soliton perturbation phenomena in fibers with lumped amplifiers
نویسندگان
چکیده
In this paper, following previous contributions, a deeper analysis on the propagation of a single soliton in a fiber with lumped amplifiers is carried out using a simple analytical approach, physically well based. The initial transient, the ripple and the smooth spread suffered by a soliton in a generic transmission system are investigated and understood quantitatively. Three important results are obtained and discussed: the determination of analytical expressions for the evolution of the soliton parameters; the extension of the concept of the average soliton to every soliton parameter; the introduction of a new parameter, S, able to represent the smooth pulse broadening in any soliton transmission system. All the results are extensively tested and supported by means of a large number of numerical simulations. q 1999 Elsevier Science B.V. All rights reserved.
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