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Improved Transmission Waveguide Bends in Photonic Crystal

Tayeboun, F; Naoum, R; Tayeboun, H M; Hattori, Haroldo; Salah-Belkhodja, F

Description

A major drawback of conventional dielectric waveguides is that their bending radii are limited to several millimeters due to the degradation of total internal reflection. Since the guiding of light in a PhC defect waveguides is not given through total internal reflection but the photonic bandgap (PBG) effect they can provide bending within the subwavelength range. Hence, PhC waveguides offer a promising scheme for low loss and ultra-dense optical integration. In this paper we have investigated...[Show more]

dc.contributor.authorTayeboun, F
dc.contributor.authorNaoum, R
dc.contributor.authorTayeboun, H M
dc.contributor.authorHattori, Haroldo
dc.contributor.authorSalah-Belkhodja, F
dc.date.accessioned2015-12-08T22:37:08Z
dc.identifier.issn0920-5071
dc.identifier.urihttp://hdl.handle.net/1885/35410
dc.description.abstractA major drawback of conventional dielectric waveguides is that their bending radii are limited to several millimeters due to the degradation of total internal reflection. Since the guiding of light in a PhC defect waveguides is not given through total internal reflection but the photonic bandgap (PBG) effect they can provide bending within the subwavelength range. Hence, PhC waveguides offer a promising scheme for low loss and ultra-dense optical integration. In this paper we have investigated and optimized 60° and 90° waveguides bends that are implemented in a planar photonic crystal (PhC) with triangular and square lattice symmetry. The in-plane guiding within the planar PhC structure is based on a W1 defect waveguide (a single line defect acting as a light channel in the Γ-K-direction) whereas for the vertical light confinement we rely in a slab waveguide formed by the low index contrast material system InGaAsP/InP. To achieve a reasonable band-gap around 1.55 μm the PhC consists of a lattice of holes with a filling factor of 39%. Key optical design parameters are characterized using 2D Finite difference time domain (FDTD) solution of the full-Wave Maxwell's equations. We show a significant improvement in both the transmission efficiency (up to 97%) and the transmission bandwidth by performing an optimization based on a sensitivity analysis.
dc.publisherBrill Academic Publishers
dc.sourceJournal of Electromagnetic Waves and Applications
dc.subjectKeywords: Bandwidth; Boundary conditions; Boundary value problems; Crystals; Electromagnetic waves; Finite difference method; Maxwell equations; Photons; Time domain analysis; Finite difference time domain (FDTD); Photonic bandgap (PBG); Photonic crystal; Photonic
dc.titleImproved Transmission Waveguide Bends in Photonic Crystal
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume19
dc.date.issued2005
local.identifier.absfor020501 - Classical and Physical Optics
local.identifier.ariespublicationU4047546xPUB124
local.type.statusPublished Version
local.contributor.affiliationTayeboun, F, University of Sidi Bel Abbes
local.contributor.affiliationNaoum, R, University of Sidi Bel Abbes
local.contributor.affiliationTayeboun, H M , University of Sidi Bel Abbes
local.contributor.affiliationHattori, Haroldo, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSalah-Belkhodja, F, University of Sidi Bel Abbes
local.description.embargo2037-12-31
local.bibliographicCitation.issue5
local.bibliographicCitation.startpage615
local.bibliographicCitation.lastpage628
local.identifier.doi10.1163/1569393053305099
dc.date.updated2015-12-08T09:55:24Z
local.identifier.scopusID2-s2.0-15744377882
CollectionsANU Research Publications

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