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Journal of Nanophotonics

Characteristic analysis and comparison of two kinds of hybrid plasmonic annular resonators
Author(s): Jie Zhou; Feifei Shi; Taojie Zhou; Kebo He; Bocang Qiu; Zhaoyu Zhang
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Paper Abstract

We designed two kinds of hybrid plasmonic annular resonators with different cross-sectional shapes, i.e., a square and circle called “square ring” and “circle ring” resonators, respectively. Both resonators feature an ultracompact mode volume of 10 4    μ m 3 and a relatively high-quality factor of 10 2 at a submicron footprint within our studied wavelength range from 400 to 900 nm. Their performance as defined by the Q / V ratio (quality factor over mode volume) is enhanced considerably with a reduction in their physical dimensions. There exists critical annular radii, which increase from 400 to 600 nm with an increase in the azimuthal numbers from m = 7 to m = 10 , if the two types of rings are compared with the same mode numbers and same ring thickness of 120 nm. Below the critical radii, the circle ring resonator outperforms the square ring resonator in terms of the Q / V ratio, and the difference in Q / V of the two types of rings increases rapidly with the decrease of the radii. On the other hand, they have critical annular radii of 250    nm , below which the square ring resonator outperforms the circle ring resonator at the wavelengths of 490 and 595 nm; however, the difference in Q / V of

Paper Details

Date Published: 3 May 2017
PDF: 9 pages
J. Nanophoton. 11(2) 026006 doi: 10.1117/1.JNP.11.026006
Published in: Journal of Nanophotonics Volume 11, Issue 2
Show Author Affiliations
Jie Zhou, Peking Univ. Shenzhen Graduate School (China)
The Chinese Univ. of Hong Kong (China)
Feifei Shi, Peking Univ. Shenzhen Graduate School (China)
Taojie Zhou, The Chinese Univ. of Hong Kong (China)
Kebo He, The Chinese Univ. of Hong Kong, Shenzhen (China)
Bocang Qiu, Shenzhen Raybow Optoelectronics Co., Ltd. (China)
Research Institute of Tsinghua Univ. in Shenzhen (China)
Zhaoyu Zhang, The Chinese Univ. of Hong Kong, Shenzhen (China)


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