基于表面等离激元的谐振腔侧面耦合MDM结构波导滤波器色散关系及透射谱

J4 ›› 2015, Vol. 32 ›› Issue (6): 648-653.

基于表面等离激元的谐振腔侧面耦合MDM结构波导滤波器色散关系及透射谱

金桂，黄小益，黄健全

湘南学院电子信息与电气工程学院，湖南郴州 423000

收稿日期:2015-09-01 修回日期:2015-09-09 出版日期:2015-11-28 发布日期:2015-11-05
通讯作者: 黄小益（1963- ）湖南郴州人，博士，教授，硕士生导师，从事声子晶体研究。 E-mail:jghxy@126.com
作者简介:金桂（1978－），男，湖南望城人，博士生，讲师，从事表面等离激元微纳光子学研究，email:jingui0531@126.com
基金资助:
湖南省教育厅科学研究项目“表面等离激元波导慢光效应研究”（14C1061）；湖南省自然科学基金“声子晶体组元材料研究”（12JJ6008）；湖南省高校科技创新团队支持计划资助“新型介质陶瓷及其微波应用研究”（2014-207）

Disperssion and transmission property of resonator side coupling MDM waveguide based on surface plasmon polaritons

JIN Gui, HUANG Xiao-yi, HUANG Jian-quan

School of Electronics Information and Electrical Engineering, Xiangnan University, Chenzhou 423000, China

Received:2015-09-01 Revised:2015-09-09 Published:2015-11-28 Online:2015-11-05

摘要/Abstract

摘要：

研究了一类L形和矩形谐振腔侧面耦合MDM结构亚波长表面等离激元滤波器的色散关系和透射谱。研究结果表明等效折射率的实部和虚部在短波部分变化较大，在长波部分（800 nm-2000 nm）趋于稳定值，传播距离随着波长的增加和介质层厚度的增加均增加，当波导宽度在50 nm以上时，SPPs的传播距离在所研究的波长范围为4-9 um，可以满足纳米光子器件的尺寸要求；通过对侧面型谐振腔和矩形谐振腔耦合的透射谱研究表明在保持腔体总长度不变的情况下，两种耦合方式所产生的光谱曲线完全相似，说明禁带的出现只与谐振腔的长度有关系，对集成光子器件的研发具有一定的参考意义。

关键词: 表面等离激元, 滤波器, 耦合谐振腔, 色散关系, 透射谱

Abstract:

A sub-wavelength surface plasmon polariton wavelength filter which consists of an “L” shape cavity and a rectangle cavity coupled to a straight Metal-Dielectric-Metal (MDM) waveguide is proposed and investigated numerically. The simulation results show that the real part and imagine part of effective index changed rapidly at short wavelength and reached a constant at long wavelength，the propagation length increased with the increasing of wavelength and waveguide width，the propagation distance beyond 4um when the width of waveguide is 50nm，which can meet the photonic device；The "L" shape cavity and the rectangle shape cavity side couple reached a similar result as if their length equal，the results expressed that the forbidden band only mentioned with cavity length , not the cavity shape，and it has a guidance meaning in development of integrated photonic device.

Key words: Surface plasmons, Filter, Coupled resonators, Dispersion relation, Filter

中图分类号:

TN252

金桂，黄小益，黄健全. 基于表面等离激元的谐振腔侧面耦合MDM结构波导滤波器色散关系及透射谱[J]. J4, 2015, 32(6): 648-653.

JIN Gui, HUANG Xiao-yi, HUANG Jian-quan. Disperssion and transmission property of resonator side coupling MDM waveguide based on surface plasmon polaritons[J]. J4, 2015, 32(6): 648-653.

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