All-optical discrete vortex switch

Anton S. Desyatnikov, Mark R. Dennis, Albert Ferrando
2011 Physical Review A. Atomic, Molecular, and Optical Physics  
We introduce discrete vortex solitons and vortex breathers in circular arrays of nonlinear waveguides. The simplest vortex breather in a four-waveguide coupler is a nonlinear dynamic state changing its topological charge between +1 and −1 periodically during propagation. We find the stability domain for this solution and suggest an all-optical vortex switching scheme.
doi:10.1103/physreva.83.063822 fatcat:ynwiqrjx2rds3e5coqsfpgb4zi