NDLI: Artificial Anisotropy in Circular Photonic Crystals and Applications

Content Provider	IEEE Xplore Digital Library
Author	Massaro, A. Cingolani, R. De Vittorio, M. Passaseo, A.
Copyright Year	2002
Abstract	In this paper, we analyze the birefringence effect in circular photonic crystals (CphCs). The studied CphCs are dielectric rings (DRs) and photonic crystals with cylindrical air holes arranged in circular patterns. The dielectric concentric circular patterns admit two preferred propagation directions defined by an extraordinary and an ordinary refractive index, representing two electric field polarizations. These electric fields are diffracted inside the crystal or are localized in a central microcavity region. We prove the induced artificial anisotropy in DRs through the geometrical equivalence with the corresponding thin-film multilayer structure. The equivalence is obtained through the geometrical synthesis of the wavefront propagation inside the artificial anisotropic structure. As applications, we analyze a Si/SiO₂ DR Bragg reflector and a GaAs CphC microcavity resonator. The Bragg theory is validated by numerical time-domain approaches that are well suited to solve scattering problems. The microcavity resonance analysis and the Q -factor evaluation are performed by the finite-element method modeling.
Sponsorship	IEEE Nanotechnology Council
Starting Page	157
Ending Page	169
Page Count	13
File Size	10160636
File Format	PDF
ISSN	1536125X
Volume Number	9
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-03-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Anisotropic magnetoresistance Photonic crystals Microcavities Dielectrics Birefringence Refractive index Polarization Diffraction Transistors Nonhomogeneous media optical rings Bragg scattering circular photonic crystal (CphC) form birefringence microcavity resonator
Content Type	Text
Resource Type	Article
Subject	Computer Science Applications Nanoscience and Nanotechnology Electrical and Electronic Engineering

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