caa a22 4500 445867582 CHVBK 20180317145502.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1140/epjd/e2010-00251-0 doi (NATIONALLICENCE)springer-10.1140/epjd/e2010-00251-0 Step-like structure and assisted tunneling in two coupled modulated waveguides [Elektronische Daten] [J. G. Cui, W. D. Li] Abstract.: The propagation of an initially-localized optical beam along two coupled modulated waveguides is investigated. A universal step-like structure emerges in the propagation process once $|\delta$ v/$v_0|$ ~ 1 and T = 2 π/$m v_0$, both for the linear and nonlinear optical waveguides. The reason is that the coupling between the two waveguides can be completely suppressed at z = m T or (2 m+1)T/2. When the nonlinearity is strong, assisted tunneling can be found for the initially-localized optical beam by slightly increasing the strength of the modulation. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2010 Cui J. G. Institute of Theoretical Physics and Department of Physics, Shanxi University, 030006, Taiyuan, P.R. China aut Li W. D. Institute of Theoretical Physics and Department of Physics, Shanxi University, 030006, Taiyuan, P.R. China aut The European Physical Journal D Springer-Verlag 61/1(2011-01-01), 187-191 1434-6060 61:1<187 2011 61 10053 https://doi.org/10.1140/epjd/e2010-00251-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2010-00251-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cui J. G. Institute of Theoretical Physics and Department of Physics, Shanxi University, 030006, Taiyuan, P.R. China aut NATIONALLICENCE 700 1- Li W. D. Institute of Theoretical Physics and Department of Physics, Shanxi University, 030006, Taiyuan, P.R. China aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 61/1(2011-01-01), 187-191 1434-6060 61:1<187 2011 61 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer