Complete and absolute photonic bandgaps in highly symmetric photonic quasicrystals embedded in low refractive index materials
Complete and absolute photonic bandgaps in highly symmetric photonic quasicrystals embedded in low refractive index materials
It is firmly established that periodic lattice structures can support photonic bandgaps (PBG). However, complete and absolute photonic bandgaps (CAPBG) have only been achieved in high dielectric constant mediums such as GaAs (ε=13.6). An artificial quasiperiodic photonic crystal based on the random square-triangle tiling system was designed and fabricated. The photonic quasicrystal possesses 12-fold symmetry and was analysed using a finite difference time domain (FDTD) approach. High orders of symmetry in photonic quasicrystals have been shown to provide isotropic bandgaps across all the directions of propagation of light. As an outcome of these properties, this new class of photonic quasicrystal has been shown, for the first time, to possess a secondary non-directional CAPBG for a relatively low index material, silicon nitride (ε=4.08). These materials are compatible with integrated optical technologies. This allows the fabrication of efficient integrated optical PBG devices such as WDM filters and multiplexers to become a real possibility.
168-174
Zoorob, M.E.
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Charlton, M.D.B.
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Parker, G.J.
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Baumberg, J.J.
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Netti, M.C.
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1 May 2000
Zoorob, M.E.
bd74f20f-754d-4909-be84-9c80e9f1faac
Charlton, M.D.B.
fcf86ab0-8f34-411a-b576-4f684e51e274
Parker, G.J.
b140c5a5-94c4-44f3-95a3-c5054a9fe38d
Baumberg, J.J.
9eb85b3d-107f-466d-ac6e-2cfd03c9229a
Netti, M.C.
ad24c913-0c0b-4d1d-afa2-19b681604727
Zoorob, M.E., Charlton, M.D.B., Parker, G.J., Baumberg, J.J. and Netti, M.C.
(2000)
Complete and absolute photonic bandgaps in highly symmetric photonic quasicrystals embedded in low refractive index materials.
Materials Science and Engineering: B, 74 (1-3), .
(doi:10.1016/S0921-5107(99)00555-3).
Abstract
It is firmly established that periodic lattice structures can support photonic bandgaps (PBG). However, complete and absolute photonic bandgaps (CAPBG) have only been achieved in high dielectric constant mediums such as GaAs (ε=13.6). An artificial quasiperiodic photonic crystal based on the random square-triangle tiling system was designed and fabricated. The photonic quasicrystal possesses 12-fold symmetry and was analysed using a finite difference time domain (FDTD) approach. High orders of symmetry in photonic quasicrystals have been shown to provide isotropic bandgaps across all the directions of propagation of light. As an outcome of these properties, this new class of photonic quasicrystal has been shown, for the first time, to possess a secondary non-directional CAPBG for a relatively low index material, silicon nitride (ε=4.08). These materials are compatible with integrated optical technologies. This allows the fabrication of efficient integrated optical PBG devices such as WDM filters and multiplexers to become a real possibility.
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MatSciEng00_PXquasiXtals.pdf
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e-pub ahead of print date: 13 April 2000
Published date: 1 May 2000
Organisations:
Nanoelectronics and Nanotechnology
Identifiers
Local EPrints ID: 252654
URI: http://eprints.soton.ac.uk/id/eprint/252654
ISSN: 0921-5107
PURE UUID: 2fb36f88-0583-431a-bcd2-63b63a0d71ff
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Date deposited: 09 Mar 2000
Last modified: 16 Mar 2024 07:44
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Contributors
Author:
M.E. Zoorob
Author:
M.D.B. Charlton
Author:
G.J. Parker
Author:
J.J. Baumberg
Author:
M.C. Netti
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