Group-index and resonant field enhancement in a symmetric double-sided grated waveguide

H. Alatas; Hugo Hoekstra; Alexander A. Iskandar; May-On Tjia

doi:10.1364/JOSAA.28.001197

Group-index and resonant field enhancement in a symmetric double-sided grated waveguide

H. Alatas, Hugo Hoekstra, Alexander A. Iskandar, May-On Tjia

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Abstract

A numerical study has been carried out by means of the Green’s function method to explore possible performance improvements of a simple grated waveguide (GWg) by the variations of its grated structure. It is shown that a GWg featuring symmetric two-sided grated structure of 16 teeth with a 60nm groove depth and having a symmetric refractive index profile with a relatively large contrast between the grated and ungrated layers is capable of delivering largely improved device performance compared to that achieved previously with a one-sided grating of 40nm groove depth and asymmetric index profile.

Original language	Undefined
Pages (from-to)	1197-1203
Number of pages	7
Journal	Journal of the Optical Society of America. A: Optics, Image Science, and Vision
Volume	28
Issue number	6
DOIs	https://doi.org/10.1364/JOSAA.28.001197
Publication status	Published - 24 May 2011

Keywords

computations
EWI-20796
IR-79453
Interated optics
METIS-284922
Green functions

Access to Document

10.1364/JOSAA.28.001197

http://eprints.eemcs.utwente.nl/secure2/20796/01/hus_josaa.pdf

Cite this

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title = "Group-index and resonant field enhancement in a symmetric double-sided grated waveguide",

abstract = "A numerical study has been carried out by means of the Green{\textquoteright}s function method to explore possible performance improvements of a simple grated waveguide (GWg) by the variations of its grated structure. It is shown that a GWg featuring symmetric two-sided grated structure of 16 teeth with a 60nm groove depth and having a symmetric refractive index profile with a relatively large contrast between the grated and ungrated layers is capable of delivering largely improved device performance compared to that achieved previously with a one-sided grating of 40nm groove depth and asymmetric index profile.",

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T1 - Group-index and resonant field enhancement in a symmetric double-sided grated waveguide

AU - Alatas, H.

AU - Hoekstra, Hugo

AU - Iskandar, Alexander A.

AU - Tjia, May-On

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N2 - A numerical study has been carried out by means of the Green’s function method to explore possible performance improvements of a simple grated waveguide (GWg) by the variations of its grated structure. It is shown that a GWg featuring symmetric two-sided grated structure of 16 teeth with a 60nm groove depth and having a symmetric refractive index profile with a relatively large contrast between the grated and ungrated layers is capable of delivering largely improved device performance compared to that achieved previously with a one-sided grating of 40nm groove depth and asymmetric index profile.

AB - A numerical study has been carried out by means of the Green’s function method to explore possible performance improvements of a simple grated waveguide (GWg) by the variations of its grated structure. It is shown that a GWg featuring symmetric two-sided grated structure of 16 teeth with a 60nm groove depth and having a symmetric refractive index profile with a relatively large contrast between the grated and ungrated layers is capable of delivering largely improved device performance compared to that achieved previously with a one-sided grating of 40nm groove depth and asymmetric index profile.

KW - computations

KW - EWI-20796

KW - IR-79453

KW - Interated optics

KW - METIS-284922

KW - Green functions

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DO - 10.1364/JOSAA.28.001197

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JO - Journal of the Optical Society of America. A: Optics, Image Science, and Vision

JF - Journal of the Optical Society of America. A: Optics, Image Science, and Vision

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