Similaritons interaction in nonlinear graded-index waveguide amplifiers

Lei Wu (1) , Jie-Fang Zhang (1) , Lu Li (2) , Christophe Finot (3) , K. Porsezian (4)

1 Institute of Nonlinear Physics
2 College of Physics and Electronics Engineering and Institute of Theoretical Physics
3 ICB - Laboratoire Interdisciplinaire Carnot de Bourgogne
4 Department of Physics

Self-similar propagation of optical beams inside a one-dimensional nonlinear graded-index waveguide amplifier is studied. By employing the lens-type and Husimi transformations, movable exact quasisoliton similaritons are obtained. Under certain conditions, these similaritons are well described by bright, Gaussian, and dark solitons on a compact parabolic background. Approximate but highly accurate analytical methods are developed to describe the interaction dynamics of exact quasisoliton similaritons.

Mots clés: amplifiers; optical solitons; optical waveguides

Domaines: Optique [physics.optics]

Lei Wu, Jie-Fang Zhang, Lu Li, Christophe Finot, K. Porsezian. Similaritons interaction in nonlinear graded-index waveguide amplifiers. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2008, 78 (5), pp.053807.1-053807.7. ⟨10.1103/PhysRevA.78.053807⟩. ⟨hal-00408604⟩