Wavelength filtering and demultiplexing structure based on aperture-coupled plasmonic slot cavities

被引：42

作者：

Hu, Feifei ^{[1
]}

Zhou, Zhiping ^{[1
,2
]}

机构：

[1] Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China

[2] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2011年 / 28卷 / 10期

基金：

中国国家自然科学基金;

关键词：

WAVE-GUIDE FILTERS; POLARITON PROPAGATION; NANODISK RESONATORS; METAL-FILM; SURFACE; GRATINGS;

D O I：

10.1364/JOSAB.28.002518

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a submicron plasmonic wavelength filtering/demultiplexing structure based on aperture-coupled slot cavities, which can overcome the limitation by the field skin depth of similar to 25nm in a conventional evanescent-coupling approach, and thus lead to an easy-to-fabricate device structure. By introducing the stub-induced interference arm in the drop or bus waveguide, the power ratio between the different resonance modes can be effectively adjusted by changing the stub length. Also, the transmission peak can be about two times higher than that without stub structure in the bus waveguide. Our results open a way to construct nanoscale wavelength filters and demultiplexers for high-density nanoplasmonic integration circuits. (C) 2011 Optical Society of America

引用

页码：2518 / 2523

页数：6