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Tunable high quality factor in two multimode plasmonic stubs waveguide

WOS被引频次:18
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成果类型:
期刊论文
作者:
Chen, Zhiquan;Li, Hongjian*;Zhan, Shiping;Li, Boxun;He, Zhihui;Xu, Hui;Zheng, Mingfei
通讯作者:
Li, Hongjian
作者机构:
[He, Zhihui; Zhan, Shiping; Chen, Zhiquan; Li, Boxun; Xu, Hui; Li, Hongjian; Zheng, Mingfei] College of Physics and Electronic, Central South University, Changsha 410083, China
[Chen, Zhiquan] College of Communication and Electronic Engineering, Hunan City University, Yiyang 413000, China
通讯机构:
[Li, Hongjian] Cent S Univ, Coll Phys & Elect, Changsha 410083, Peoples R China.
语种:
英文
期刊:
SCIENTIFIC REPORTS
ISSN:
2045-2322
年:
2016
卷:
6
页码:
24446
文献类别:
WOS:Article;PUBMED:Journal Article
入藏号:
基金类别:
Research Fund for the Doctoral Program of Higher Education of China [20100162110068]; National Natural Science Foundation of China [61275174]
机构署名:
本校为其他机构
院系归属:
信息与电子工程学院
摘要:
We numerically investigate the optical characteristics of a metal-dielectric-metal (MDM) waveguide side-coupled with two identical multimode stub resonators. Double plasmon-induced transparency (PIT) peaks with narrow full width at half maximum (FWHM) and high quality factor (Q-factor) can be observed in this structure. The Q-factors of PIT peaks in two stub resonators system are larger than those in single stub resonator system. A multimode coupled-radiation oscillator theory (MC-ROT), which is derived from ROT, is proposed to analyze the spectral response in the multimode system for the first time. The analytical results are confirmed by the finite-difference time-domain (FDTD) simulation results. We can also find that the Q-factors of the two PIT peaks have an opposite evolution tendency with the change of the stubs parameters and the maximum can reach to 427. These results may provide some applications for ultrasensitive sensors, switches and efficient filters.
参考文献:
Gramotnev, D. & Bozhevolnyi, S. Plasmonics beyond the diffraction limit. Nat. Photonics 4, 83 (2010).
Min, C. & Veronis, G. Absorption switches in metal-dielectric-metal plasmonic waveguides. Opt. Express 17, 10757 (2009).
Huang, Y., Min, C. & Veronis, G. Compact slit-based couplers for metal-dielectric-metal plasmonic waveguides. Opt. Express 20, 22233 (2012).
He, Z., Li, H., Zhan, S., Cao, G. & Li, B. Combined theoretical analysis for plasmon-induced transparency in waveguide systems. Opt. Lett. 39, 5543 (2014).
Zhang, Z., Zhang, L., Li, H. & Chen, H. Plasmon induced transparency in a surface plasmon polariton waveguide with a comb line slot and rectangle cavity. Appl. Phys. Lett. 104, 231114 (2014).

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