Research Papers

Characteristic analysis and comparison of two kinds of hybrid plasmonic annular resonators

[+] Author Affiliations
Jie Zhou

Peking University, Shenzhen Graduate School, School of Electronic and Computer Engineering, Peking University Campus, Shenzhen, China

The Chinese University of Hong Kong, School of Science and Engineering, Shenzhen, China

Feifei Shi

Peking University, Shenzhen Graduate School, School of Electronic and Computer Engineering, Peking University Campus, Shenzhen, China

Taojie Zhou, Kebo He, Zhaoyu Zhang

The Chinese University of Hong Kong, School of Science and Engineering, Shenzhen, China

Bocang Qiu

Shenzhen Raybow Optoelectronics Corp., Shenzhen, China

Research Institute of Tsinghua University in Shenzhen, Shenzhen, China

J. Nanophoton. 11(2), 026006 (May 03, 2017). doi:10.1117/1.JNP.11.026006
History: Received November 25, 2016; Accepted April 17, 2017
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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 104  μm3 and a relatively high-quality factor of 102 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 the two types of rings remains small within the radii range we consider. It is suggested that, in practice, with the consideration of the wavelength of green emission for these two ring structures with radii from 100 to 500 nm and ring thickness 120  nm, they have a negligible difference in Q/V performance.

Figures in this Article
© 2017 Society of Photo-Optical Instrumentation Engineers

Topics

Resonators

Citation

Jie Zhou ; Feifei Shi ; Taojie Zhou ; Kebo He ; Bocang Qiu, et al.
"Characteristic analysis and comparison of two kinds of hybrid plasmonic annular resonators", J. Nanophoton. 11(2), 026006 (May 03, 2017). ; http://dx.doi.org/10.1117/1.JNP.11.026006


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