A surface-plasmon-polariton wavelength splitter based on a metal-insulator-metal waveguide

被引：9
|
作者：
Yu, Haibin [1 ]
Sun, Chen [1 ]
Tang, Hongyang [1 ]
Deng, Xiaoxu [1 ]
Li, Junhao [2 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Phys & Astron, Minist Educ, Key Lab Laser Plasmas,State Key Lab Adv Opt Commu, Shanghai 200240, Peoples R China
[2] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA
来源：
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS | 2014年 / 12卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Wavelength splitter; Surface plasmon polaritons; Metal-insulator-metal waveguide; Transfer-matrix method; Finite-difference time-domain method; BRAGG REFLECTORS; COUPLERS;
D O I：
10.1016/j.photonics.2014.05.007
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A surface-plasmon-polariton (SPP) wavelength splitter based on a metal-insulator-metal waveguide with multiple teeth is proposed. Using the transfer-matrix method, a plasmonic band gap is identified in the multiple-toothed structure, and the splitting wavelength of the SPP splitter can be easily adapted by adjusting the widths of the teeth and the gaps. The proposed wavelength splitter is further verified through finite-difference time-domain (FDTD) simulations, in which SPPs with incident wavelengths of 756 nm and 892 nm are successfully split and guided in opposite directions in the waveguide, with extinction ratios of 30 dB and 29 dB, respectively. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：460 / 465
页数：6
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