Superprism effect in 2D rectangular photonic crystals

Alexandru I. Cabuz; Emmanuel Centeno; David Cassagne

doi:10.1117/12.545806

15 September 2004 Superprism effect in 2D rectangular photonic crystals

Alexandru I. Cabuz, Emmanuel Centeno, David Cassagne

Proceedings Volume 5450, Photonic Crystal Materials and Nanostructures; (2004) https://doi.org/10.1117/12.545806
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

In this work, we show that photonic crystals with geometries of lower symmetry, such as the rectangular geometry, are uniquely suited for applications involving the superprism effect. The extra degree of freedom provided by the anisotropy of the unit cell allows more freedom in searching for suitable iso-frequency curves. Also, the appearance of multiple orders of diffraction allows more than one incident plane wave to couple to the same Bloch mode. This extra degree of freedom is decisive when trying to optimize the transmission. We illustrate this on a particular rectangular configuration which ensures a strong angular superprism effect, a well collimated transmitted beam, and power transmissions of up to 80%. We also study the effect of the incident beam width on the super-prism effect, and propose a possible solution to the problem of beam diffraction at the exit surface.

Citation Download Citation

Alexandru I. Cabuz, Emmanuel Centeno, and David Cassagne "Superprism effect in 2D rectangular photonic crystals", Proc. SPIE 5450, Photonic Crystal Materials and Nanostructures, (15 September 2004); https://doi.org/10.1117/12.545806

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