Compensation of nonlinear absorption in a soliton communication system

In the present work, the design parameters of a soliton communication system exhibiting both linear and nonlinear absorption are discussed. Initially, the evolution of the soliton parameters during propagation is calculated using perturbation theory. Then, the propagation of solitary pulses under continuous or localized amplification is studied and the conditions for quasi-stable propagation are determined. The effects of higher-order nonlinear absorption are also investigated. Finally, numerical simulations are performed, verifying the analytical results.