A compact wavelength demultiplexing structure based on arrayed MIM plasmonic nano-disk cavities

被引：16
作者：
Lu, Fan [1 ]
Li, Guangyuan [1 ]
Li, Kun [1 ]
Wang, Zhonghua [1 ]
Xu, Anshi [1 ]
机构：
[1] Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2012年 / 285卷 / 24期
基金：
中国国家自然科学基金;
关键词：
Surface plasmons; Metal-insulator-metal waveguides; Wavelength demultiplexing device; METAL WAVE-GUIDES; POLARITON PROPAGATION; RESONATORS; FILM; SLOT;
D O I：
10.1016/j.optcom.2012.07.127
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A compact plasmonic wavelength demultiplexing structure based on arrayed metal-insulator-metal (MIM) plasmonic nano-disk cavities is proposed and numerically investigated by utilizing finite-difference time-domain (FDTD) method. The structure consists of a bus waveguide perpendicularly coupled with a series of nano-disk cavities through slit-waveguides. A model based on resonator theory is used to design the operating wavelength of the structure. Simulation results show that compared with the directly side-coupled nano-disk structure, the narrower transmission linewidth of each channel could be obtained through the coupling between fore-end slit-waveguide and nano-disk cavity. The transmission wavelength and bandwidth of the structure can be tuned by adjusting the geometrical parameters and the refractive index of cavities. The proposed structure will be useful in ultra-compact optical devices for optical communications and computing. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：5519 / 5523
页数：5
相关论文
共 29 条
[1]   Surface plasmon subwavelength optics [J].
Barnes, WL ;
Dereux, A ;
Ebbesen, TW .
NATURE, 2003, 424 (6950) :824-830
[2]   Plasmon-polariton modes guided by a metal film of finite width [J].
Berini, P .
OPTICS LETTERS, 1999, 24 (15) :1011-1013
[3]   Magnetic field integral equation analysis of interaction between a surface plasmon polariton and a circular dielectric cavity embedded in the metal [J].
Chremmos, Ioannis .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2009, 26 (12) :2623-2633
[4]   Plasmon slot waveguides: Towards chip-scale propagation with subwavelength-scale localization [J].
Dionne, JA ;
Sweatlock, LA ;
Atwater, HA ;
Polman, A .
PHYSICAL REVIEW B, 2006, 73 (03)
[5]   Plasmonic crystal demultiplexer and multiports [J].
Drezet, A. ;
Koller, Daniel ;
Hohenau, Andreas ;
Leitner, Alfred ;
Aussenegg, Franz R. ;
Krenn, Joachim R. .
NANO LETTERS, 2007, 7 (06) :1697-1700
[6]   Surface plasmon polariton propagation and combination in Y-shaped metallic channels [J].
Gao, HT ;
Shi, HF ;
Wang, CT ;
Du, CL ;
Luo, XG ;
Deng, QL ;
Lv, YG ;
Lin, XD ;
Yao, HM .
OPTICS EXPRESS, 2005, 13 (26) :10795-10800
[7]  
Gramotnev D.K., 2010, NATURE PHOTONICS, V4, P1749
[8]   Surface plasmon Bragg gratings formed in metal-insulator-metal waveguides [J].
Han, Zhanghua ;
Forsberg, Erik ;
He, Sailing .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2007, 19 (2-4) :91-93
[9]   Wavelength demultiplexing structure based on arrayed plasmonic slot cavities [J].
Hu, Feifei ;
Yi, Huaxiang ;
Zhou, Zhiping .
OPTICS LETTERS, 2011, 36 (08) :1500-1502
[10]   Coupled metal gap waveguides as plasmonic wavelength sorters [J].
Kang, Zhiwen ;
Wang, Guo Ping .
OPTICS EXPRESS, 2008, 16 (11) :7680-7685
123