Abstract
Discrete solitons in photonic lattices [1] offer manifold possible applications in integrated optics. Of particular interest is purely optical switching and routing: solitons may be used to block paths within photonic networks [2]. Hence, detailed knowledge about the influence of junctions on soliton formation is essential. Junctions constitute purely topological perturbations of the system’s periodicity. In analogy to conventional defects, i.e. detuned waveguides, they can be perceived as so-called “topological defects” [3]. Here, we investigate topological defects imposed by junctions with N branches, reveal their impact on soliton formation and compare them to conventional defects.
© 2011 Optical Society of America
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