Experimental demonstration of light bending effect at optical wavelengths in a non-homogenizable graded photonic crystal

Khanh Van Do; Xavier Le Roux; Delphine Marris-Morini; Laurent Vivien; Eric Cassan

doi:10.1117/12.921981

25 April 2012 Experimental demonstration of light bending effect at optical wavelengths in a non-homogenizable graded photonic crystal

Khanh Van Do, Xavier Le Roux, Delphine Marris-Morini, Laurent Vivien, Eric Cassan

Author Affiliations +

Proceedings Volume 8425, Photonic Crystal Materials and Devices X; 84250Y (2012) https://doi.org/10.1117/12.921981
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

Experimental results on light bending effect in a non-homogenizable graded photonic crystals operating at optical wavelengths are presented. A square lattice photonic crystal made with a two-dimensional chirp of the air-hole filling factor is exploited to produce this bending effect in a near bandgap frequency range. Experimental results are in good agreement with the prediction that had been performed using the equations of Hamiltonian optics and Finite-Difference Time-Domain simulations. This experimental demonstration performed in one particular configuration opens opportunities for light manipulation using a combination of unusual dispersive phenomena in PhCs and additional degrees of freedom brought by a generalized two-dimensional chirp of PhCs lattice parameters. This approach is also an alternative solution to the use of photonic metamaterials combining dielectric and metallic materials with sub-wavelength unit cells.

Citation Download Citation

Khanh Van Do, Xavier Le Roux, Delphine Marris-Morini, Laurent Vivien, and Eric Cassan "Experimental demonstration of light bending effect at optical wavelengths in a non-homogenizable graded photonic crystal", Proc. SPIE 8425, Photonic Crystal Materials and Devices X, 84250Y (25 April 2012); https://doi.org/10.1117/12.921981

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