Analytical dynamics of optical similariton solutions of the amplified nonlinear Schrödinger equation with varying parameters
Authors: Wabnitz S.
Autors Affiliation: Institut Carnot de Bourgogne, UMR CNRS 5209, Université de Bourgogne, 9 Av. A. Savary, 21078 Dijon, France
Abstract: The evolution of short optical pulses towards a self-similar parabolic intensity profile in normally dispersive nonlinear fiber optic amplifiers can be described with good accuracy by means of a simple analytical model. This approach enables the evaluation of the optimal input pulse time duration and chirp for decreasing the distance of convergence towards the asymptotic regime. We show that pulse spectral broadening in dispersive nonlinear fiber amplifiers may be enhanced by introducing a suitable dispersion tapering. We obtain an analytical dispersion profile which permits to reduce pulse propagation in a varying dispersion fiber to the case of an equivalent fiber with constant parameters.
KeyWords: Light amplifiers; Optical fibers; Schrodinger equation; Solitons; Wave propagation, Analytical dispersion profiles; Asymptotic regime; Nonlinear fiber optic amplifiers; Parabolic intensity, Nonlinear opticsDOI: 10.1117/12.721559