54 citations · 208 across the 8 of their papers we have counts for
8 papers
Revisiting the PT-symmetric Trimer: Bifurcations, Ghost States and Associated Dynamics
K. Li, P. G. Kevrekidis, D. J. Frantzeskakis +2
In this paper, we revisit one of the prototypical PT-symmetric oligomers, namely the trimer. We find all the relevant branches of "regular" solutions and analyze the bifurcations a…
Multi-stable regime and intermediate solutions in a nonlinear saturable coupler
Diego Guzmán-Silva, Cibo Lou, Uta Naether +3
We show, theoretically and experimentally, the existence of a multi-stable regime in a nonlinear saturable coupler. In spite of its simplicity, we found that this model shows gener…
Dark lattice solitons in one-dimensional waveguide arrays with defocusing saturable nonlinearities and alternating couplings
Andrey Kanshu, Christian E. Rüter, Detlef Kip +2
In the present work, we examine "binary" waveguide arrays, where the coupling between adjacent sites alternates between two distinct values and and a saturable nonlinea…
Dark-bright gap solitons in coupled-mode one-dimensional saturable waveguide arrays
Rong Dong, Christian E. Rüter, Detlef Kip +4
In the present work, we consider the dynamics of dark solitons as one mode of a defocusing photorefractive lattice coupled with bright solitons as a second mode of the lattice. Our…
Observation of higher-order solitons in defocusing waveguide arrays
Eugene Smirnov, Christian E. Ruter, Detlef Kip +2
We observe experimentally higher-order solitons in waveguide arrays with defocusing saturable nonlinearity. Such solitons can comprise several in-phase bright spots and are stable…
Tamm oscillations in semi-infinite nonlinear waveguide arrays
Milutin Stepić, Christian E. Rüter, Eugene Smirnov +3
We demonstrate numerically the existence of nonlinear Tamm oscillations at the interface between a substrate and one-dimensional waveguide array with both cubic and saturable, self…
Formation and light guiding properties of dark solitons in one-dimensional waveguide arrays
Eugene Smirnov, Christian E. Rueter, Milutin Stepic +2
We report on the formation of dark discrete solitons in a nonlinear periodic system consisting of evanescently-coupled channel waveguides that are fabricated in defocusing lithium…
Beam interactions in one-dimensional saturable waveguide arrays
Milutin Stepic, Eugene Smirnov, Christian E. Rueter +2
The interaction between two parallel beams in one-dimensional discrete saturable systems has been investigated using lithium niobate nonlinear waveguide arrays. When the beams are…