彭伟

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:物理学院

学科:光学工程. 光学

办公地点:物理与光电工程学院235

联系方式:wpeng@dlut.edu.cn

电子邮箱:wpeng@dlut.edu.cn

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Fano-like resonances in the binary elliptical nanoring resonator array

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论文类型:期刊论文

发表时间:2018-08-01

发表刊物:OPTICAL MATERIALS EXPRESS

收录刊物:SCIE

卷号:8

期号:8

页面范围:2131-2139

ISSN号:2159-3930

摘要:In this paper, we design and investigate a binary elliptical nanoring resonator array on a gold conducting layer, which can generate two optical Fano-like resonant modes in the visible light range under normal incidence. The gold conducting layer underneath the nanoring resonator array strongly enhances the coupling and hybridization among different resonant modes. These two distinct Fano-like resonances originate from the interactions of dipolar antibonding and bonding modes, and dipolar bonding and propagating surface plasmon modes, respectively, which provide as high a refractive index sensitivity as 620 n/mRIU, and achieve high figures of merit, 78 and 154, separately in a refractive index range of 1.33 similar to 1.40. Compared to the circular nanoring array, the elliptical structure we demonstrate here can generate shaper resonant modes that can be used for high sensitivity measurement. The designed binary elliptical nanoring resonator array is very promising for dual-channel biosensing application. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement