Dielectric-loaded surface plasmon polariton waveguides on a finite-width metal strip

被引：43

作者：

Grandidier, J. ^{[1
]}

des Francs, G. Colas ^{[1
]}

Markey, L. ^{[1
]}

Bouhelier, A. ^{[1
]}

Massenot, S. ^{[1
]}

Weeber, J. -C. ^{[1
]}

Dereux, A. ^{[1
]}

机构：

[1] Univ Bourgogne, CNRS, UMR 5209, Lab Interdisciplinaire Carnot Bourgogne, F-21078 Dijon, France

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 06期

关键词：

dielectric-loaded waveguides; metallic thin films; plasmonics; polaritons; surface plasmons; PROPAGATION;

D O I：

10.1063/1.3300839

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate the guiding properties of a dielectric-loaded surface plasmon polariton waveguide on a finite-width metal strip. The guided mode is characterized by leakage radiation microscopy for different metal strip widths. We show a strong mode attenuation for metal strip widths below 1.75 mu m at telecom wavelength lambda=1.55 mu m. We estimate the minimal width using numerical methods and propose an original interpretation. Good agreement with the measured data is achieved. The determination of this critical width is a prerequisite for designing miniaturized plasmonics devices.

引用

页数：3

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