Higher order dispersion effects in the noninstantaneous nonlinear Schrödinger equation

2011 ◽  
Vol 58 (11) ◽  
pp. 924-931 ◽  
Author(s):  
Alidou Mohamadou ◽  
C.G. Latchio Tiofack ◽  
Thierry Blanchard Ekogo ◽  
Jacques Atangana ◽  
Timoleon C. Kofane ◽  
...  
2006 ◽  
Vol 61 (5-6) ◽  
pp. 225-234 ◽  
Author(s):  
Woo-Pyo Hong

The modulational instability of the higher-order nonlinear Schrödinger equation with fourth-order dispersion and quintic nonlinear terms, describing the propagation of extremely short pulses, is investigated. Several types of gains by modulational instability are shown to exist in both the anomalous and normal dispersion regimes depending on the sign and strength of the higher-order nonlinear terms. The evolution of the modulational instability in both the anomalous and normal dispersion regimes is numerically investigated and the effects of the higher-order dispersion and nonlinear terms on the formation and evolution of the solitons induced by modulational instability are studied. - PACS numbers: 42.65.Tg, 42.81Dp, 42.65Sf


2005 ◽  
Vol 23 (4) ◽  
pp. 483-502 ◽  
Author(s):  
ROBERT BEECH ◽  
FREDERICK OSMAN

This paper will present the nonlinearity and dispersion effects involved in propagation of optical solitons, which can be understood by using a numerical routine to solve the nonlinear Schrödinger equation (NLSE). Here, Mathematica v5© (Wolfram, 2003) is used to explore in depth several features of optical solitons formation and propagation. These numerical routines were implemented through the use of Mathematica v5© and the results give a very clear idea of this interesting and important practical phenomenon. It is hoped that this work will open up an important new approach to the cause, effect, and correction of interference from secondary radiation found in the uses of soliton waves in lasers and in optical fiber telecommunication. It is believed that these results will be of considerable use in any work or research in this field and in self-focusing properties of the soliton (Osman et al., 2004a, 2004b; Hora, 1991). In a previous paper on this topic (Beech & Osman, 2004), it was shown that solitons of NLSE radiate. This paper goes on from there to show that these radiations only occur in solitons derived from cubic, or odd-numbered higher orders of NLSE, and that there are no such radiations from solitons of quadratic, or even-numbered higher order of NLSE. It is anticipated that this will stimulate research into practical means to control or eliminate such radiations.


Sign in / Sign up

Export Citation Format

Share Document