Nonlinear Optics in Guided Geometries - Abstract
Sukhorukov, Andrey A.
This presentation overviews our recent theoretical and experimental results on shaping and switching of light beams in modulated one- and two-dimensional photonic lattices created by arrays of periodically curved coupled optical waveguides. We present a general approach for realizing broadband diffraction management of polychromatic light beams with a spectral width of hundreds of nanometres by introducing appropriate longitudinal modulation of a photonic lattice, and predict a novel type of defect-free surface waves at the structure boundaries. In two-dimensional curved arrays, we reveal the possibility of wavelength-dependent engineering of lattice symmetry. We also predict that all-optical switching of visible light is possible in curved nonlinear waveguide couplers made of a material with intensity-dependent refractive index. These results suggest novel opportunities for flexible manipulation and control of polychromatic light in nonlinear photonic lattices.