Exact solutions of the one-dimensional generalized modified complex Ginzburg-Landau equation

The one-dimensional (1D) generalized modified complex Ginzburg-Landau (MCGL) equation for the traveling wave systems is analytically studied. Exact solutions of this equation are obtained using a method which combines the Painleve test for integrability in the formalism of Weiss-Tabor-Carnevale and Hirota technique of bilinearization. We show that pulses, fronts, periodic unbounded waves, sources, sinks and solution as collision between two fronts are the important coherent structures that organize much of the dynamical properties of these traveling wave systems. The degeneracies of the 1D generalized MCGL equation are examined as well as several of their solutions. These degeneracies include two important equations: the 1D generalized modified Schrodinger equation and the 1D generalized real modified Ginzburg-Landau equation; We obtain that the one parameter family of traveling localized source solutions called Nozaki-Bekki holes become a subfamily of the dark soliton solutions in the 1D generalized modified Schrodinger limit. (C) 2003 Published by Elsevier Science Ltd.