Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides

Charles E De Nobriga; Gareth D Hobbs; William J Wadsworth; Jonathan C Knight; Dmitry V Skryabin; A Samarelli; M Sorel; R M De La Rue

doi:10.1364/OL.35.003925

Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides

Charles E De Nobriga, Gareth D Hobbs, William J Wadsworth, Jonathan C Knight, Dmitry V Skryabin, A Samarelli, M Sorel, R M De La Rue

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Abstract

In this Letter, we report group index measurements of the supermodes of an array of two strongly coupled silicon-on-insulator waveguides. We observe coupling-induced dispersion that is greater than the material and waveguide dispersion of the individual waveguides. We demonstrate that the system transforms from supporting the two supermodes associated with two coupled waveguides to the single mode of a slot waveguide within the investigated spectral range. During the cutoff of the antisymmetric supermode, an anti-crossing between the symmetric TM and antisymmetric TE supermodes has been observed.

Original language	English
Pages (from-to)	3925-3927
Number of pages	3
Journal	Optics Letters
Volume	35
Issue number	23
DOIs	https://doi.org/10.1364/OL.35.003925
Publication status	Published - 2010

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This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.35.003925 Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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title = "Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides",

abstract = "In this Letter, we report group index measurements of the supermodes of an array of two strongly coupled silicon-on-insulator waveguides. We observe coupling-induced dispersion that is greater than the material and waveguide dispersion of the individual waveguides. We demonstrate that the system transforms from supporting the two supermodes associated with two coupled waveguides to the single mode of a slot waveguide within the investigated spectral range. During the cutoff of the antisymmetric supermode, an anti-crossing between the symmetric TM and antisymmetric TE supermodes has been observed.",

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T1 - Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides

AU - De Nobriga, Charles E

AU - Hobbs, Gareth D

AU - Wadsworth, William J

AU - Knight, Jonathan C

AU - Skryabin, Dmitry V

AU - Samarelli, A

AU - Sorel, M

AU - De La Rue, R M

PY - 2010

Y1 - 2010

N2 - In this Letter, we report group index measurements of the supermodes of an array of two strongly coupled silicon-on-insulator waveguides. We observe coupling-induced dispersion that is greater than the material and waveguide dispersion of the individual waveguides. We demonstrate that the system transforms from supporting the two supermodes associated with two coupled waveguides to the single mode of a slot waveguide within the investigated spectral range. During the cutoff of the antisymmetric supermode, an anti-crossing between the symmetric TM and antisymmetric TE supermodes has been observed.

AB - In this Letter, we report group index measurements of the supermodes of an array of two strongly coupled silicon-on-insulator waveguides. We observe coupling-induced dispersion that is greater than the material and waveguide dispersion of the individual waveguides. We demonstrate that the system transforms from supporting the two supermodes associated with two coupled waveguides to the single mode of a slot waveguide within the investigated spectral range. During the cutoff of the antisymmetric supermode, an anti-crossing between the symmetric TM and antisymmetric TE supermodes has been observed.

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UR - http://dx.doi.org/10.1364/OL.35.003925

U2 - 10.1364/OL.35.003925

DO - 10.1364/OL.35.003925

M3 - Article

SN - 0146-9592

VL - 35

SP - 3925

EP - 3927

JO - Optics Letters

JF - Optics Letters

IS - 23

ER -

Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides

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Nonlinear Photonics in Silicon-on-Insulator Nanostructures

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Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides

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Nonlinear Photonics in Silicon-on-Insulator Nanostructures

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