Aspect ratio control and sensing applications for a slot waveguide with a multimode stub

被引：27
作者：
He, Zhihui [1 ]
Peng, Yongyi [1 ]
Li, Boxun [1 ]
Chen, Zhiquan [1 ]
Xu, Hui [1 ]
Zheng, Mingfei [1 ]
Li, Hongjian [1 ,2 ]
机构：
[1] Cent S Univ, Coll Phys & Elect, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Coll Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
来源：
APPLIED PHYSICS EXPRESS | 2016年 / 9卷 / 07期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
PLASMON-INDUCED TRANSPARENCY; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; FANO RESONANCES; TRANSMISSION;
D O I：
10.7567/APEX.9.072002
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the aspect ratio control and sensing applications for metal-dielectric-metal (MDM) slot waveguides with a multimode stub. By adjusting the aspect ratio r = h/w of the stub, five types of optical evolutions in various aspect ratio r ranges are defined. We can realize a single or double plasmon-induced transparency ( PIT) as well as Fano resonances. In addition, the figure of merit (FOM), which can describe the sensing performance of structures, is discussed in our paper. We can find up to three FOM peaks in our proposed structure. These findings provide guidance for the fundamental research of integrated plasmonic sensors. (C) 2016 The Japan Society of Applied Physics
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页数：4
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