Minimizing bending losses in two-dimensional discrete soliton networks

Summary form only given. In a recent study we have shown that discrete solitons (DS) in two-dimensional networks can be used to realize intelligent functional operations such as blocking, routing, logic functions and time gating. More specifically, this class of solitons can be all-optically navigated in 2-D array networks - a property highly desirable for optical routers. In this case, a DS can move transversely along any preassigned path and thus the array behaves like a soliton wire. Bends are essential elements of such DS networks. In general a soliton tends to loose power when it encounters a bend due to reflections. This becomes particularly problematic when bends are used in cascade. Thus reducing bending losses in such array networks is an issue of importance. In this work we show that reflection losses occurring along sharp bends can be minimized by appropriate design. Analysis indicates that this can be accomplished by modifying the properties of the corner waveguide.