A dichroic surface-plasmon-polariton splitter based on an asymmetric T-shape nanoslit

被引：23
作者：
Zhang, Xiang [1 ,2 ]
Li, Zhi [1 ,2 ]
Chen, Jianjun [1 ,2 ,3 ,4 ]
Yue, Song [1 ,2 ]
Gong, Qihuang [1 ,2 ]
机构：
[1] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
[3] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[4] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 12期
基金：
中国国家自然科学基金;
关键词：
EFFICIENT; EXCITATION; SLIT; PHASE;
D O I：
10.1364/OE.21.014548
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An asymmetric T-shape nanoslit in a metal film is proposed to act as an efficient dichroic surface-plasmon-polariton (SPP) splitter, which is composed of a single nanoslit in immediate contacting with two nanogrooves with different widths. Simulations show that, due to the interferences of SPPs in the upper part of the asymmetric T-shape nanoslit, the generated SPPs propagating to the left and right directions on the front metal surface can be manipulated nearly independently by altering the right and left groove widths, respectively. Based on such effects, a dichroic SPP splitter is demonstrated and the splitting wavelengths can easily be adjusted. High splitting ratios of 31: 1 and 1: 12 at splitting wavelengths of 680 nm and 884 nm are numerically presented with a device's lateral dimension of only 1200 nm. Further experimental results match the simulations well. (C)2013 Optical Society of America
引用
收藏
页码：14548 / 14554
页数：7
相关论文
共 20 条
[1]   Surface plasmon subwavelength optics [J].
Barnes, WL ;
Dereux, A ;
Ebbesen, TW .
NATURE, 2003, 424 (6950) :824-830
[2]   Compact Antenna for Efficient and Unidirectional Launching and Decoupling of Surface Plasmons [J].
Baron, Alexandre ;
Devaux, Eloise ;
Rodier, Jean-Claude ;
Hugonin, Jean-Paul ;
Rousseau, Emmanuel ;
Genet, Cyriaque ;
Ebbesen, Thomas W. ;
Lalanne, Philippe .
NANO LETTERS, 2011, 11 (10) :4207-4212
[3]   Highly efficient nanofocusing based on a T-shape micro-slit surrounded with multi-slits [J].
Chen, Jianjun ;
Wang, Chen ;
Lu, Guowei ;
Li, Wenqiang ;
Xiao, Jinghua ;
Gong, Qihuang .
OPTICS EXPRESS, 2012, 20 (16) :17734-17740
[4]   Plasmon-Induced Transparency in Asymmetric T-Shape Single Slit [J].
Chen, Jianjun ;
Li, Zhi ;
Yue, Song ;
Xiao, Jinghua ;
Gong, Qihuang .
NANO LETTERS, 2012, 12 (05) :2494-2498
[5]   Ultracompact surface-plasmon-polariton splitter based on modulations of quasicylindrical waves to the total field [J].
Chen, Jianjun ;
Li, Zhi ;
Yue, Song ;
Gong, Qihuang .
JOURNAL OF APPLIED PHYSICS, 2011, 109 (07)
[6]   Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit [J].
Chen, Jianjun ;
Li, Zhi ;
Yue, Song ;
Gong, Qihuang .
APPLIED PHYSICS LETTERS, 2010, 97 (04)
[7]   Multiband plasmonic absorber based on transverse phase resonances [J].
Cui, Yanxia ;
Fung, Kin Hung ;
Xu, Jun ;
He, Sailing ;
Fang, Nicholas X. .
OPTICS EXPRESS, 2012, 20 (16) :17552-17559
[8]   Surface-plasmon circuitry [J].
Ebbesen, Thomas W. ;
Genet, Cyriaque ;
Bozhevolnyi, Sergey I. .
PHYSICS TODAY, 2008, 61 (05) :44-50
[9]   Plasmonic surface-wave splitter [J].
Gan, Qiaoqiang ;
Guo, Baoshan ;
Song, Guofeng ;
Chen, Lianghui ;
Fu, Zhan ;
Ding, Yujie J. ;
Bartoli, Filbert J. .
APPLIED PHYSICS LETTERS, 2007, 90 (16)
[10]   Bidirectional surface wave splitter at visible frequencies [J].
Gan, Qiaoqiang ;
Bartoli, Filbert J. .
OPTICS LETTERS, 2010, 35 (24) :4181-4183
12