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Plasmon modes of circular cylindrical double-layer graphene

Journal Article


Abstract


  • In this paper, a theoretical investigation on plasmon modes in a circular cylindrical double-layer graphene structure is presented. Due to the interlayer electromagnetic interaction, there exist two branches of plasmon modes, the optical plasmon mode and the acoustic plasmon mode. The characteristics of these two modes, such as mode pattern, effective mode index and propagation loss, are analyzed. The modal behaviors can be effectively tuned by changing the distance between two graphene layers, the chemical potential of graphene and the permittivity of interlayer dielectric. Importantly, the breakup of tradeoff between mode confinement and propagation loss is discovered in the distance-dependent modal behavior, which originates from the unique dispersion properties of a double-layer graphene system. As a consequence, both strong mode confinement and longer propagation length can be achieved. Our results may provide good opportunities for developing applications based on graphene plasmonics in circular cylindrical structure.

Authors


  •   Zhao, Tao (external author)
  •   Hu, Min (external author)
  •   Zhong, Renbin (external author)
  •   Chen, Xiaoxing (external author)
  •   Zhang, Ping (external author)
  •   Gong, Sen (external author)
  •   Chao Zhang
  •   Liu, Shenggang (external author)

Publication Date


  • 2016

Citation


  • Zhao, T., Hu, M., Zhong, R., Chen, X., Zhang, P., Gong, S., Zhang, C. & Liu, S. (2016). Plasmon modes of circular cylindrical double-layer graphene. Optics Express, 24 (18), 20461-20471.

Scopus Eid


  • 2-s2.0-84989260748

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2251

Number Of Pages


  • 10

Start Page


  • 20461

End Page


  • 20471

Volume


  • 24

Issue


  • 18

Abstract


  • In this paper, a theoretical investigation on plasmon modes in a circular cylindrical double-layer graphene structure is presented. Due to the interlayer electromagnetic interaction, there exist two branches of plasmon modes, the optical plasmon mode and the acoustic plasmon mode. The characteristics of these two modes, such as mode pattern, effective mode index and propagation loss, are analyzed. The modal behaviors can be effectively tuned by changing the distance between two graphene layers, the chemical potential of graphene and the permittivity of interlayer dielectric. Importantly, the breakup of tradeoff between mode confinement and propagation loss is discovered in the distance-dependent modal behavior, which originates from the unique dispersion properties of a double-layer graphene system. As a consequence, both strong mode confinement and longer propagation length can be achieved. Our results may provide good opportunities for developing applications based on graphene plasmonics in circular cylindrical structure.

Authors


  •   Zhao, Tao (external author)
  •   Hu, Min (external author)
  •   Zhong, Renbin (external author)
  •   Chen, Xiaoxing (external author)
  •   Zhang, Ping (external author)
  •   Gong, Sen (external author)
  •   Chao Zhang
  •   Liu, Shenggang (external author)

Publication Date


  • 2016

Citation


  • Zhao, T., Hu, M., Zhong, R., Chen, X., Zhang, P., Gong, S., Zhang, C. & Liu, S. (2016). Plasmon modes of circular cylindrical double-layer graphene. Optics Express, 24 (18), 20461-20471.

Scopus Eid


  • 2-s2.0-84989260748

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2251

Number Of Pages


  • 10

Start Page


  • 20461

End Page


  • 20471

Volume


  • 24

Issue


  • 18