Soliton dynamics and surface waves at the interface between saturable nonlinear dielectrics

Year: 1996

Authors: Bradley P.J., De Angelis C.

Autors Affiliation: CSELT, Centro Studi e Laboratori Telecomunicazioni, Via Reiss Romoli 274, 10148 Torino, Italy;
Dipartimento di Elettronica e Informatica, Università di Padova, Via Gradenigo 6/a, 35131 Padova, Italy

Abstract: The paper deals with light propagation at the interface between two saturable nonlinear dielectrics. We first find analytically that surface waves can be sustained by such an interface and we discuss, using the equivalent particle approach, their stability properties. We explain here the similarities and differences with respect to the well known properties of surface waves of the pure Kerr case. We then study the reflection and refraction of self-trapped beams at the interface. It is found that the existence of two stable values of amplitude for a given beam width translates into the possibility of refraction being replaced by reflection for the same beam shape at different power levels. The possible use of this phenomenon in all-optical processing is studied analytically through the equivalent particle approach and the obtained results are verified by means of numerical integration of the governing equation.

Journal/Review: OPTICS COMMUNICATIONS

Volume: 130 (1-3)      Pages from: 205  to: 218

KeyWords: Solitons
DOI: 10.1016/0030-4018(96)00320-3

Citations: 10
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