Dynamical Localization and AC Bloch Oscillations in Periodic Optical Waveguide Arrays

We propose using an array of optical waveguides whose curvature periodically changes sign to measure dynamical localization in AC optical Bloch oscillations. The equivalent of the AC driving field is generated by the periodically curvature change of hte waveguide array. For certain special ratios of the Bloch oscillation frequency and the drive frequency our numerical simulations show dynamical localization where the optical spatial wavepacket periodically returns to its initial shape and lateral position in the array.