Topology optimization of grating couplers for the efficient excitation of surface plasmons

Jacob Anders Andkjær; Ole Sigmund; Shinji Nishiwaki; Tsuyoshi Nomura

doi:10.1364/JOSAB.27.001828

Topology optimization of grating couplers for the efficient excitation of surface plasmons

Jacob Anders Andkjær, Ole Sigmund, Shinji Nishiwaki, Tsuyoshi Nomura

Research output: Contribution to journal › Journal article › Research › peer-review

599 Downloads (Pure)

Abstract

We propose a methodology for a systematic design of grating couplers for efficient excitation of surface plasmons at metal-dielectric interfaces. The methodology is based on a two-dimensional topology optimization formulation based on the H-polarized scalar Helmholtz equation and finite-element method simulations. The efficiency of the method is demonstrated by optimized designs for input and output grating couplers for an Ag-SiO2 interface. The results indicate that slanted grove gratings may raise the coupling efficiency above 68% where the highest previously reported value was 50%.

Original language	English
Journal	Optical Society of America. Journal B: Optical Physics
Volume	27
Issue number	9
Pages (from-to)	1828-1832
ISSN	0740-3224
DOIs	https://doi.org/10.1364/JOSAB.27.001828
Publication status	Published - 2010

Bibliographical note

Copyright (2010) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

Access to Document

10.1364/JOSAB.27.001828

3B9A51CFd01Final published version, 183 KB

Fingerprint Dive into the research topics of 'Topology optimization of grating couplers for the efficient excitation of surface plasmons'. Together they form a unique fingerprint.

Cite this

@article{e8c91ba72b4d444fb0078d26e9551f26,

title = "Topology optimization of grating couplers for the efficient excitation of surface plasmons",

abstract = "We propose a methodology for a systematic design of grating couplers for efficient excitation of surface plasmons at metal-dielectric interfaces. The methodology is based on a two-dimensional topology optimization formulation based on the H-polarized scalar Helmholtz equation and finite-element method simulations. The efficiency of the method is demonstrated by optimized designs for input and output grating couplers for an Ag-SiO2 interface. The results indicate that slanted grove gratings may raise the coupling efficiency above 68% where the highest previously reported value was 50%.",

author = "Andkj{\ae}r, {Jacob Anders} and Ole Sigmund and Shinji Nishiwaki and Tsuyoshi Nomura",

note = "Copyright (2010) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.",

year = "2010",

doi = "10.1364/JOSAB.27.001828",

language = "English",

volume = "27",

pages = "1828--1832",

journal = "Optical Society of America. Journal B: Optical Physics",

issn = "0740-3224",

publisher = "Optical Society of America",

number = "9",

}

TY - JOUR

T1 - Topology optimization of grating couplers for the efficient excitation of surface plasmons

AU - Andkjær, Jacob Anders

AU - Sigmund, Ole

AU - Nishiwaki, Shinji

AU - Nomura, Tsuyoshi

N1 - Copyright (2010) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

PY - 2010

Y1 - 2010

N2 - We propose a methodology for a systematic design of grating couplers for efficient excitation of surface plasmons at metal-dielectric interfaces. The methodology is based on a two-dimensional topology optimization formulation based on the H-polarized scalar Helmholtz equation and finite-element method simulations. The efficiency of the method is demonstrated by optimized designs for input and output grating couplers for an Ag-SiO2 interface. The results indicate that slanted grove gratings may raise the coupling efficiency above 68% where the highest previously reported value was 50%.

AB - We propose a methodology for a systematic design of grating couplers for efficient excitation of surface plasmons at metal-dielectric interfaces. The methodology is based on a two-dimensional topology optimization formulation based on the H-polarized scalar Helmholtz equation and finite-element method simulations. The efficiency of the method is demonstrated by optimized designs for input and output grating couplers for an Ag-SiO2 interface. The results indicate that slanted grove gratings may raise the coupling efficiency above 68% where the highest previously reported value was 50%.

U2 - 10.1364/JOSAB.27.001828

DO - 10.1364/JOSAB.27.001828

M3 - Journal article

VL - 27

SP - 1828

EP - 1832

JO - Optical Society of America. Journal B: Optical Physics

JF - Optical Society of America. Journal B: Optical Physics

SN - 0740-3224

IS - 9

ER -