Shaping and switching of polychromatic light in arrays of periodically curved nonlinear waveguides

摘要

We overview our recent theoretical results on spatio-spectral control, diffraction management, and Ьroad-band all-optical switching of polychromatic light in periodically curved one and two dimensional arrays ofcoupled optical waveguides. In particular, we show that polychromatic light beams and patterns producedby white-light and supercontinuum sources can experience wavelength-independent normal, anomalous,or zero diffraction in specially designed structures. We also demonstrate that in the nonlinear regime, it ispossible to achieve broadband all-optical switching of polychromatic light in a directional waveguide cou-pler with special bending of the waveguide axes. Our results suggest novel opportunities for creation ofall-optical logical gates and switches which can operate in a very broad frequency region, e.g., coveringthe entire visible spectrum.