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Publicly Available Published by De Gruyter December 6, 2012

Physics of the zero- photonic gap: fundamentals and latest developments

  • Lei Zhou EMAIL logo , Zhengyong Song , Xueqin Huang and C.T. Chan
From the journal Nanophotonics


A short overview is presented on the research works related to the zero- gap, which appears as the volume-averaged refraction index vanishes in photonic structures containing both positive and negative-index materials. After introducing the basic concept of the zero- gap based on both rigorous mathematics and numerical simulations, the unique properties of such a band gap are discussed, including its robustness against weak disorder, wide-incidence-angle operation and scaling invariance, which do not belong to a conventional Bragg gap. We then describe the simulation and experimental verifications on the zero- gap and its extraordinary properties in different frequency domains. After that, the unusual photonic and physical effects discovered based on the zero- gap and their potential applications are reviewed, including beam manipulations and nonlinear effects. Before concluding this review, several interesting ideas inspired from the zero- gap works will be introduced, including the zero-phase gaps, zero-permittivity and zero-permeability gaps, complete band gaps, and zero-refraction-index materials with Dirac-Cone dispersion.

Corresponding author Edited by Nader Engheta, University of Pennsylvania, Philadelphia, Pennsylvania, USA

Received: 2012-7-7
Accepted: 2012-11-1
Published Online: 2012-12-06
Published in Print: 2012-12-01

©2012 by Science Wise Publishing & De Gruyter Berlin Boston

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