Silicon-based metal-loaded plasmonic waveguides for low-loss nanofocusing

被引：31
|
作者：
Lafone, Lucas [1 ]
Sidiropoulos, Themistoklis P. H. [1 ]
Oulton, Rupert F. [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England
来源：
OPTICS LETTERS | 2014年 / 39卷 / 15期
基金：
英国工程与自然科学研究理事会;
关键词：
CONFINEMENT;
D O I：
10.1364/OL.39.004356
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We introduce plasmonic waveguides based on metal loading of silicon-on-insulator (SOI) substrates. Here slab waveguide modes hybridize with the plasmonic modes of either a metal nanowire or a slot in a metal film. By tapering a single dimension of either structure, the resulting hybrid mode can be converted from photon-like to plasmon-like, allowing up to millimeter-range transport and rapid nanoscale focusing down to mode areas similar to lambda(2)/400. Metal loading is achievable with a single lithography step directly on SOI without the need for etching and, thus, opens practical possibilities for silicon nanoplasmonics. (C) 2014 Optical Society of America
引用
收藏
页码：4356 / 4359
页数：4
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