Title: Wave propagation in waveguide arrays with alternating positive and negative couplings
Authors: Efremidis, Nikolaos K.
Zhang, Peng
Chen, Zhigang
Christodoulides, Demetrios N.
Rüter, Christian E. 
Kip, Detlef  
Language: en
Subject (DDC): DDC::500 Naturwissenschaften und Mathematik
Issue Date: May-2010
Document Type: Article
Journal / Series / Working Paper (HSU): Physical review. A, Atomic, molecular, and optical physics The American Physical Society. 
Volume: 81
Issue: 5
Publisher Place: College Park, MD
Conference: Nonlinear Photonics 2010 
We introduce a waveguide array model with alternating positive and negative couplings between adjacent waveguides. Two different settings where such a model can be realized are identified as arrays of defects in Bragg gratings and arrays with propagation constants that periodically vary along the propagation direction. We analyze the properties of wave propagation in such waveguide arrays and find several interesting properties that have no counterpart in the case of arrays with constant couplings. These include the beam self-splitting, self-induced Talbot oscillations, symmetric evolution of Bloch oscillations, and new families of lattice solitons. © 2010 The American Physical Society.
Organization Units (connected with the publication): Experimentalphysik und Materialwissenschaften 
URL: https://api.elsevier.com/content/abstract/scopus_id/77952414512
ISSN: 10502947
DOI: 10.1103/PhysRevA.81.053817
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