Directive Emission from Defect-Free Dodecagonal Photonic Quasicrystals: A Leaky-Wave Characterization
Abstract
In this paper, we study the radiation from embedded sources in two-dimensional finite-size "photonic-quasicrystal" (PQC) slabs made of dielectric rods arranged according to a 12-fold symmetric aperiodic tiling. The results from our investigation, based on rigorous full-wave simulations, show the possibility of achieving broadside radiation at multiple frequencies, with high-directivity (e.g., 15 dB) and low-sidelobes (e.g., -12 dB). We also show that leaky waves are supported by a PQC slab, and that the beamwidth is directly proportional to the leaky-wave attenuation constant, which provides a physically-incisive interpretation of the observed radiation characteristics.
Cite
@article{arxiv.0711.3097,
title = {Directive Emission from Defect-Free Dodecagonal Photonic Quasicrystals: A Leaky-Wave Characterization},
author = {Alessandro Micco and Vincenzo Galdi and Filippo Capolino and Alessandro Della Villa and Vincenzo Pierro and Stefan Enoch and Gerard Tayeb},
journal= {arXiv preprint arXiv:0711.3097},
year = {2009}
}
Comments
7 pages, 7 figures; slight change in the title, major revision in the text and figures. Accepted for publication in Phys. Rev. B