18 April 2006 Linear waveguides in photonic crystals based on periodic arrangement of spheres
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Abstract
We demonstrate the possibility of waveguiding electromagnetic waves in a monolayer of dielectric spheres. While light is confined vertically by index guiding, a triangular superlattice monolayer of spheres was found to exhibit a photonic band gap below the light cone, thereby preventing light from propagating laterally. A gap map of this structure is presented. We propose a possible waveguide configuration that yields two non-degenerate defect modes lying within the photonic band gap. Such a structure may be particularly interesting for coupling light into self-assembled colloidal photonic crystals.
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Kevin Vynck, David Cassagne, Emmanuel Centeno, "Linear waveguides in photonic crystals based on periodic arrangement of spheres", Proc. SPIE 6182, Photonic Crystal Materials and Devices III (i.e. V), 618226 (18 April 2006); doi: 10.1117/12.663028; https://doi.org/10.1117/12.663028
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