NDLI: Guidance Properties of Plasmonic Nanogrooves: Comparison Between the Effective Index Method and the Finite Integration Technique

Content Provider	IEEE Xplore Digital Library
Author	Polemi, A. Alu, A. Engheta, N.
Copyright Year	2002
Abstract	In this letter, we compare the effective index method (EIM), applied to derive an analytical model of the guidance properties of plasmonic groove waveguides, to full-wave simulations based on finite integration technique (FIT). We apply our results to different plasmonic groove geometries, with particular attention to the triangular (V-groove) waveguide. We first approximate the V-groove geometry with a multiple-sections rectangular-stepped waveguide, for which EIM may be applied in closed form. Explicit formulas for the dispersion properties are given in terms of a set of transcendental equations, which are then solved with standard numerical complex-zeros-searching routines. Our numerical results are then compared and validated with FIT full-wave simulations, showing the range of validity of EIM and providing an efficient analytical description and physical insights into the guided propagation in V-groove plasmonic waveguides.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	199
Ending Page	202
Page Count	4
File Size	525427
File Format	PDF
ISSN	15361225
Volume Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical waveguides Rectangular waveguides Plasmons Dispersion Indexes Refractive index surface plasmon polaritons (SPP) Effective index method (EIM) finite integration technique (FIT) plasmonic waveguides
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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