Light Localization in Coupled Optical Waveguides

This thesis analyzes different light localization phenomena in waveguide arrays. We report on the observation of quasi-Bloch oscillations, a new type of dynamic localization in the spatial evolution of light in curved, coupled optical waveguides. The delocalization and final relocalization of an opt...

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Bibliographic Details
Main Author: Joushaghani, Arash
Other Authors: Aitchison, J. Stewart
Language:en_ca
Published: 2011
Subjects:
Online Access:http://hdl.handle.net/1807/29567
Description
Summary:This thesis analyzes different light localization phenomena in waveguide arrays. We report on the observation of quasi-Bloch oscillations, a new type of dynamic localization in the spatial evolution of light in curved, coupled optical waveguides. The delocalization and final relocalization of an optical beam in a waveguide array is shown by spatially resolving the optical intensity at various propagation distances. Through comparison to different structures, quasi-Bloch oscillations are shown to be robust beyond the nearest-neighbor tight-binding approximation.