Kominis, YannisBountis, TassosFlach, Sergej2017-11-082017-11-082016-09-19Kominis Yannis et al.(>2), 2016(September 19), The Asymmetric Active Coupler: Stable Nonlinear Supermodes and Directed Transport, Scientific ReportsDOI: 10.1038/srep33699http://nur.nu.edu.kz/handle/123456789/2757We consider the asymmetric active coupler (AAC) consisting of two coupled dissimilar waveguides with gain and loss. We show that under generic conditions, not restricted by parity-time symmetry, there exist finite-power, constant-intensity nonlinear supermodes (NS), resulting from the balance between gain, loss, nonlinearity, coupling and dissimilarity. The system is shown to possess non-reciprocal dynamics enabling directed power transport functionality.enOpen Access - the content is available to the general publicAttribution-NonCommercial-ShareAlike 3.0 United Statesasymmetric active couplernonlinear supermodesArticle