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Enhancement of surface plasmon resonance in a coupled graphene waveguide-cavity system
Author(s): Dan Liu; Sa Yang; Renlong Zhou; Yongming Zhao; Shuang Li; Yingyi Xiao; Yimin Liu
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Paper Abstract

Graphene nanoribbons (GNRs) are envisioned to play an important role in improving confinement of surface plasmon resonance. Here, a coupled graphene-cavity-waveguide (GCW) system is proposed to investigate the characteristics of the resonant modes with finite difference time domain (FDTD) method. It is found that the surface plasmon characteristics can be modulated with the change of geometrical parameters of the structure and physical parameters of graphene. The resonant wavelength is sensitive to the Fermi level; and the resonant depth can be adjusted by the altering of carrier mobility. Moreover, the quality factor can be affected by the separation of cavity-cavity. The proposed GCW coupling system has potential applications in graphene-based integrated nanophotonic devices, optical filters, slow light and other active photonic devices.

Paper Details

Date Published: 12 March 2019
PDF: 9 pages
Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110234J (12 March 2019); doi: 10.1117/12.2521944
Show Author Affiliations
Dan Liu, Guangdong Univ. of Education (China)
Sa Yang, Guangdong Univ. of Education (China)
Renlong Zhou, Guangdong Univ. of Education (China)
Yongming Zhao, Guangdong Univ. of Education (China)
Shuang Li, Guangdong Univ. of Education (China)
Yingyi Xiao, Guangdong Univ. of Education (China)
Yimin Liu, Guangzhou City Construction College (China)


Published in SPIE Proceedings Vol. 11023:
Fifth Symposium on Novel Optoelectronic Detection Technology and Application
Qifeng Yu; Wei Huang; You He, Editor(s)

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