Chirped nonlinear resonant states in femtosecond fiber optics

TL;DR

This paper demonstrates the existence and controllability of nonlinear resonant states in femtosecond fiber optics using a higher-order nonlinear Schrödinger model, supported by analytical and numerical evidence.

Contribution

It introduces new nonlinear resonant states in fiber optics and shows how their nonlinear chirp can be effectively controlled through specific parameters.

Findings

Existence of nonlinear resonant states in the model.

Analytical illustration of Gaussian, Airy, and periodic beams.

Numerical validation of analytical predictions.

Abstract

We show the existence of nonlinear resonant states in a higher-order nonlinear Schr\"odinger model that appertains to the wave propagation in femtosecond fiber optics, under certain parametric regime. These nonlinear resonant states are analytically illustrated in terms of Gaussian beams, Airy beams, and periodic beams that resulted due to the presence of quadratic, linear, and constant type of `smart' potentials, respectively, of the ensuing model. Interestingly, the nonlinear chirp associated with each of these novel resonant states can be efficiently controlled, by varying the self-steepening term and self-frequency shift. Furthermore, we have conducted numerical experiments corroborative of our analytical predictions.