Considering the theory of electromagnetic waves from the Maxwell's equations, we
introduce a (3+ 1)-dimensionsal cubic-quintic complex Ginzburg-Landau equation …

In this paper, we focus on the dynamical behavior and modulation instability of optical
solitons in nonlinear directional couplers. The expressions of single soliton solutions are …

This paper demonstrates the possibility to observe the modulational instability (MI) regions
due to modified nonlinear saturability over and above other high-order nonlinearities for the …

We investigate the modulation instability in oppositely directed coupler in the presence of
higher-order effects. Using linear stability analysis, we obtain an expression for instability …

The present design deals with a three-core system in which two channels are made of
negative index material and one made of positive index material. The nonlinear Schrodinger …

We theoretically investigate modulation instability (MI) in a nonidentical waveguide array,
which is made up of positive and negative index metamaterial waveguides. The unit cell of …

We are motivated by recent studies in medium formed by two tunnel-coupled waveguides.
One of the waveguides is manufactured from an ordinary dielectric, while the second has …

In this paper we theoretically derive for the first time a matrix formalism for a coupled dual-
core fiber optical parametric amplifier (FOPA). One of the most advantageous properties of …

The present study reports the modulation instability (MI) in a positive–negative elliptical
birefringent indexed coupler with nonlinear saturation effect. We derive the modified …

We examine the cross-phase modulational instability in a two-core birefringent coupler
made of a positive and negative index material. The modified form of generalized nonlinear …