Theoretical study of a multichannel plasmonic waveguide notch filter with double-sided nanodisk and two slot cavities

doi:10.1016/j.rinp.2019.102506

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	Theoretical study of a multichannel plasmonic waveguide notch filter with double-sided nanodisk and two slot cavities
	Qi, Yunping 1; Zhou, Peiyang 1; Zhang, Ting 1; Zhang, Xuewei 1; Wang, Yue 1; Liu, Chuqin 1; Bai, Yulong 1; Wang, Xiangxian 2
刊名	RESULTS IN PHYSICS
	2019-09
卷号	14
关键词	Surface plasmon polaritons Metal-insulator-metal waveguides Plasmon-induced transparency Plasmonic filter
ISSN号	2211-3797
DOI	10.1016/j.rinp.2019.102506
英文摘要	Based on the transmission characteristics of surface plasmonic subwavelength structure, a multichannel plasmonic notch filter comprising two slot resonators and a nano-disk cavity with the metal-insulator-metal waveguide is proposed and investigated numerically using the finite element method (FEM). It demonstrates that our proposed structure has the novel multichannel notch filter characteristics in optical regime. And the three resonance trough wavelengths of the notch filter can be tuned by changing the radius of the nano-disk and width of the slot, which is in good agreement with the results of the coupled mode theory (CMT). Moreover, the second resonance trough wavelength of the transmission spectrum increases in almost the same intervals of 30 nm when the radius of nano-disk cavity increases in intervals of 10 nm, showing a Fano line and an obvious red-shift. At the third resonance trough, the results show that the plasmon-induced transparency (PIT) is produced. And the PIT response is strongly influenced by the separation gap between the adjacent slot cavities. Additionally, the FOM* (figure of merit) and sensitivity of this structure can be as high as 99 and 750 nm/RIU, respectively. The results of this study not only present a tunable multichannel plasmonic notch filter, but also aid in developing ultra-compact refractive index sensor in optical highly integration circuits.
资助项目	National Natural Science Foundation of China[61367005][61865008] ; Natural Science Foundation of Gansu Province, China[17JR5RA078] ; Northwest Normal University Young Teachers' Scientific Research Capability Upgrading Program[NWNU-LKQN-17-6]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000485104100125
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31597]
专题	理学院
通讯作者	Qi, Yunping
作者单位	1.Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Gansu, Peoples R China 2.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Qi, Yunping,Zhou, Peiyang,Zhang, Ting,et al. Theoretical study of a multichannel plasmonic waveguide notch filter with double-sided nanodisk and two slot cavities[J]. RESULTS IN PHYSICS,2019,14.
APA	Qi, Yunping.,Zhou, Peiyang.,Zhang, Ting.,Zhang, Xuewei.,Wang, Yue.,...&Wang, Xiangxian.(2019).Theoretical study of a multichannel plasmonic waveguide notch filter with double-sided nanodisk and two slot cavities.RESULTS IN PHYSICS,14.
MLA	Qi, Yunping,et al."Theoretical study of a multichannel plasmonic waveguide notch filter with double-sided nanodisk and two slot cavities".RESULTS IN PHYSICS 14(2019).