Near-field observation of beam steering in a photonic crystal superprism

Abstract

The optical near-field technique is applied to provide a direct experimental observation of the refracted beam propagation inside a photonic crystal structure displaying a superprism effect. The obtained results show a $35°$ light beam angle deviation for a wavelength variation from 1500 to $1600\mathrm{nm}$. The experimentally determined beam divergence is in good agreement with modeling predictions and previously performed transmittance experiments. A marked self-collimation propagation over a broad $20\mathrm{nm}$ wide spectral range centered at $\lambda =1550\mathrm{nm}$ is experimentally demonstrated. The developed technique opens promising perspectives for the invisibility cloaking structures investigation.

© 2011 Optical Society of America

Compact, low cross-talk CWDM demultiplexer using photonic crystal superprism

Damien Bernier, Xavier Le Roux, Anatole Lupu, Delphine Marris-Morini, Laurent Vivien, and Eric Cassan
Opt. Express 16(22) 17209-17214 (2008)

Experimental evidence for superprism phenomena in SOI photonic crystals

A. Lupu, E. Cassan, S. Laval, L. El Melhaoui, P. Lyan, and J. M. Fedeli
Opt. Express 12(23) 5690-5696 (2004)

Discontinuous wavelength super-refraction in photonic crystal superprism

Anatole Lupu, André de Lustrac, Abdelwaheb Ourir, Xavier Checoury, Jean-Michel Lourtioz, Emmanuel Centeno, David Cassagne, Jean-Paul Albert, Frederic Pommereau, Lionel Legouezigou, Olivier Drisse, Odile Legouezigou, Estelle Deroin, and Guang-Hua Duan
Opt. Express 14(5) 2003-2013 (2006)

Composite superprism photonic crystal demultiplexer: analysis and design

Amin Khorshidahmad and Andrew G. Kirk
Opt. Express 18(19) 20518-20528 (2010)

Dispersion-accumulated diffraction-compensated superprism with two cascaded photonic crystals

Eric Cassan and Marco Casale
J. Opt. Soc. Am. B 29(6) 1172-1178 (2012)