Enhancement of surface plasmon resonance in a coupled graphene waveguide-cavity system

Dan Liu; Sa Yang; Renlong Zhou; Yongming Zhao; Shuang Li; Yingyi Xiao; Yimin Liu

doi:10.1117/12.2521944

12 March 2019 Enhancement of surface plasmon resonance in a coupled graphene waveguide-cavity system

Dan Liu, Sa Yang, Renlong Zhou, Yongming Zhao, Shuang Li, Yingyi Xiao, Yimin Liu

Proceedings Volume 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application; 110234J (2019) https://doi.org/10.1117/12.2521944
Event: Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 2018, Xi'an, China

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.

Citation Download Citation

Dan Liu, Sa Yang, Renlong Zhou, Yongming Zhao, Shuang Li, Yingyi Xiao, and Yimin Liu "Enhancement of surface plasmon resonance in a coupled graphene waveguide-cavity system", Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110234J (12 March 2019); https://doi.org/10.1117/12.2521944

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