Influence of modified saturable nonlinearity on modulational instability in metamaterial with presence of self-steepening

2019 ◽  
Author(s):  
P. Mohanraj ◽  
R. Tamilthiruvalluvar ◽  
S. Sabari ◽  
K. Porsezian
Keyword(s):  
Modulational Instability ◽  
Saturable Nonlinearity

Modulational instability in a biexciton molecular chain with saturable nonlinearity effects

2016 ◽  
Vol 30 (01) ◽  
pp. 1550244
Author(s):  
Issa Sali ◽  
C. B. Tabi ◽  
H. P. Ekobena ◽  
T. C. Kofané
Keyword(s):  
Stability Analysis ◽  
Numerical Simulations ◽  
Linear Stability Analysis ◽  
Adiabatic Approximation ◽  
Continuous Wave ◽  
Modulational Instability ◽  
Coupled System ◽  
Molecular Chain ◽  
Saturable Nonlinearity ◽  
Wave Solutions

In this paper, we study the modulational instability (MI) in a biexciton molecular chain taking into account the saturable nonlinearity effects (SNE). Under the adiabatic approximation, the biexciton system is reduced to two coupled nonlinear Schrödinger equations. We perform the linear stability analysis of continuous wave solutions of the coupled system. This analysis reveals that the MI gain is deeply influenced by the SNE. Indeed, the gain spectrum decreases when increasing the saturable nonlinearity parameters. The numerical simulations reveal that the system exhibits incoherent periodic array of patterns and we also observe train of pulses due to the SNE.

Dynamics of induced modulational instability in waveguides with saturable nonlinearity

1995 ◽  
Vol 121 (1-3) ◽  
pp. 69-72 ◽  
Author(s):  
N. Da Dalt ◽  
C. De Angelis ◽  
G.F. Nalesso ◽  
M. Santagiustina
Keyword(s):  
Modulational Instability ◽  
Saturable Nonlinearity

Modulational instability in semiconductor-doped glass fibers with saturable nonlinearity

1993 ◽  
Vol 18 (3) ◽  
pp. 182 ◽  
Author(s):  
J. Miguel Hickmann ◽  
S. B. Cavalcanti ◽  
N. M. Borges ◽  
E. A. Gouveia ◽  
A. S. Gouveia-Neto
Keyword(s):  
Modulational Instability ◽  
Glass Fibers ◽  
Saturable Nonlinearity ◽  
Doped Glass

Modulational instability in metamaterials with saturable nonlinearity and higher-order dispersion

2012 ◽  
Vol 59 (11) ◽  
pp. 972-979 ◽  
Author(s):  
C.G. Latchio Tiofack ◽  
Alidou Mohamadou ◽  
K. Porsezian ◽  
Timoleon C. Kofane
Keyword(s):  
Modulational Instability ◽  
Higher Order ◽  
Saturable Nonlinearity ◽  
Higher Order Dispersion ◽  
Order Dispersion
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