Quasi-Bloch Oscillations in Curved Coupled Optical Waveguides

Arash Joushaghani, Rajiv Iyer, Joyce K. S. Poon, J. Stewart Aitchison, C. Martijn de Sterke, Jun Wan, and Marc M. Dignam
Phys. Rev. Lett. 103, 143903 – Published 1 October 2009

Abstract

We report the observation of quasi-Bloch oscillations, a recently proposed, new type of dynamic localization in the spatial evolution of light in a curved coupled optical waveguide array. By spatially resolving the optical intensity at various propagation distances, we show the delocalization and final relocalization of the beam in the waveguide array. Through comparisons with other structures, we show that this dynamic localization is robust beyond the nearest-neighbor tight-binding approximation and exhibits a wavelength dependence different from conventional dynamic localization.

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  • Received 6 May 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.143903

©2009 American Physical Society

Authors & Affiliations

Arash Joushaghani*, Rajiv Iyer, Joyce K. S. Poon, and J. Stewart Aitchison

  • Department of Electrical and Computer Engineering and Institute for Optical Science, University of Toronto, 10 King’s College Road, Toronto, Ontario, M5S 3G4, Canada

C. Martijn de Sterke

  • Center for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), and School of Physics, University of Sydney, 2006 Australia

Jun Wan and Marc M. Dignam

  • Department of Physics, Queen’s University, Kingston, Ontario, Canada, K7L 3N6

  • *arash.joushaghani@utoronto.ca
  • Present address: Wilmer Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287 USA

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Issue

Vol. 103, Iss. 14 — 2 October 2009

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