In this paper, we perform a detailed study of the spectral response of the gold U-shaped nano-structures for different geometrical parameters and polarizations in order to obtain significant localization factor in the wavelength 1.55 μm. The obtained near-field distribution of electric fields reveals that resonances in these nano-structures correspond to the even and odd plasmonic modes dependi...

Embedded solitons are exceptional modes in nonlinear-wave systems with the propagation constant falling system’s band. An especially challenging topic is seeking for such nonlinear dynamical lattices (discrete systems). We address this problem a system of coupled discrete equations modeling light an array tunnel-coupled waveguides combination intrinsic quadratic (second-harmonic-generating) and...