Gennadiy BURLAK,¹ Svetlana KOSHEVAYA,¹ Masashi HAYAKAWA,² Edmundo GUTIERREZ-D³ and Vladimir GRIMALSKY^1,3

¹Center for Research on Engineering and Applied Sciences. Autonomous State University of Morelos. Ave. Universidad, No 1001, C.P. 62210, Cuernavaca, Mor. Mexico, ²Department of Electronic Engineering, The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu, Tokyo, 182-8585 Japan ³National Institute of Astrophysics, Optics, and Electronics(INAOE), P.O.Box 51&216, Z.P. 72000, Puebla, Mexico

(Received January 6, 2000; Accepted April 21, 2000)

It is shown that the deceleration of light pulses down to the velocity of a sound value can be realized in a case of unidirectional parametric interaction of two electromagnetic waves with an acoustic one in the regime of forming three wave acousto-optic solitons. This nonlinear acousto-optic interaction can be realized in long distance systems like fibers. As the result of such an interaction, two types of acousto-optic envelope solitons can propagate in fibers. Modulation of the amplitude of the electromagnetic pump wave can control the soliton velocity.

Key words : nonlinearity, optical fiber, acousto-optic soliton, controlling, velocity

gburlak@uaem.mx