Optical multiband vector breathers in tunable waveguide arrays

A. Fratalocchi, G. Assanto, K.A. Brzdakiewicz, and M.A. Karpierz

Opt. Lett. 30, 174-176 (2005)


We investigate multiband optical breathers in a voltage-adjustable array of coupled waveguides in nematic liquid crystals. Symmetric breathers resulting from vector composition of modes from two bands are observed over large propagation distances and are described in terms of the Floquet-Bloch theory.