We consider N-coupled higher-order nonlinear Schrodinger (N-CHNLS) equations which govern the simultaneous propagation of N optical fields in fiber media with higher-order effects. Bright and dark soliton solutions are derived using Hirota bilinear method for the general cross-coupling ratio between the parameters of self-phase modulation and cross-phase modulation effects. By means of coupled amplitude-phase formulation also, similar kind of dark soliton solutions are obtained. It is found that the parametric conditions for the simultaneous propagation of N dark solitons from both the methods are the same. (C) 2001 Elsevier Science Ltd. All rights reserved.
|Number of pages||6|
|Journal||Chaos, Solitons & Fractals|
|Publication status||Published - 2002|
- NONLINEAR SCHRODINGER-EQUATIONS
- DISPERSIVE DIELECTRIC FIBERS
- SELF-FREQUENCY SHIFT