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Modelling of photonic wire Bragg Gratings

Modelling of photonic wire Bragg Gratings
Modelling of photonic wire Bragg Gratings
Some important properties of photonic wire Bragg grating structures have been investigate. The design, obtained as a generalisation of the full-width gap grating, has been modelled using 3D finite-difference time-domain simulations. Different types of stop-band have been observed. The impact of the grating geometry on the lowest order (longest wavelength) stop-band has been investigated - and has identified deeply indented configurations where reduction of the stop-bandwidth and of the reflectivity occurred. Our computational results have been substantially validated by an experimental demonstration of the fundamental stop-band of photonic wire Bragg gratings fabricated on silicon-on-insulator material. The accuracy of two distinct 2D computational models based on the effective index method has also been studied - because of their inherently much greater rapidity and consequent utility for approximate initial designs. A 2D plan-view model has been found to reproduce a large part of the essential features of the spectral response of full 3D models.
finite-difference time-domain, optical waveguide modelling, photonic crystal, photonic wire, silicon on insulator, waveguide grating
0306-8919
133-148
Gnan, M
9d8dc69f-2a7b-4bd6-bd8b-eda1b962973e
Bellanca, G
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Chong, H M H
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Bassi, P
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De La Rue, R M
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Gnan, M
9d8dc69f-2a7b-4bd6-bd8b-eda1b962973e
Bellanca, G
76cdd2c7-760c-49a4-8f2c-5f2975afc63a
Chong, H M H
795aa67f-29e5-480f-b1bc-9bd5c0d558e1
Bassi, P
b7a68742-1124-405e-b807-ef06f5d83551
De La Rue, R M
f172f931-c862-4a66-a3a4-731e362174da

Gnan, M, Bellanca, G, Chong, H M H, Bassi, P and De La Rue, R M (2006) Modelling of photonic wire Bragg Gratings. Optical and Quantum Electronics, 38 (1-3), 133-148. (doi:10.1007/s11082-006-0010-0).

Record type: Article

Abstract

Some important properties of photonic wire Bragg grating structures have been investigate. The design, obtained as a generalisation of the full-width gap grating, has been modelled using 3D finite-difference time-domain simulations. Different types of stop-band have been observed. The impact of the grating geometry on the lowest order (longest wavelength) stop-band has been investigated - and has identified deeply indented configurations where reduction of the stop-bandwidth and of the reflectivity occurred. Our computational results have been substantially validated by an experimental demonstration of the fundamental stop-band of photonic wire Bragg gratings fabricated on silicon-on-insulator material. The accuracy of two distinct 2D computational models based on the effective index method has also been studied - because of their inherently much greater rapidity and consequent utility for approximate initial designs. A 2D plan-view model has been found to reproduce a large part of the essential features of the spectral response of full 3D models.

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Published date: 2006
Keywords: finite-difference time-domain, optical waveguide modelling, photonic crystal, photonic wire, silicon on insulator, waveguide grating
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 264899
URI: http://eprints.soton.ac.uk/id/eprint/264899
ISSN: 0306-8919
PURE UUID: 95426488-849b-41ec-834d-6a73d8ef2056
ORCID for H M H Chong: ORCID iD orcid.org/0000-0002-7110-5761

Catalogue record

Date deposited: 27 Nov 2007 10:01
Last modified: 15 Mar 2024 03:30

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Contributors

Author: M Gnan
Author: G Bellanca
Author: H M H Chong ORCID iD
Author: P Bassi
Author: R M De La Rue

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