Nonscattering Photodetection in the Propagation of Unidirectional Surface Plasmon Polaritons Embedded with Graphene

Chia Hung Wu, Chih Jen Ku, Min Wen Yu, Jhen Hong Yang, Tien Chang Lu, Tzy Rong Lin, Chan Shan Yang, Kuo Ping Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Recently, nanoscale light manipulation using surface plasmon polaritons (SPPs) has received considerable research attention. The conventional method of detecting SPPs is through light scattering or using bulky Si or Ge photodetectors. However, these bulky systems limit the application of nanophotonic circuits. In this study, the light-matter interaction between graphene and SPP was investigated. For realizing an improved integration in nanocircuits, single-layer graphene was added to asymmetric SPP nanoantenna arrays for nonscattering detection in the near field. The developed device is capable of detecting the controlled propagation of SPPs with a photoresponsivity of 15 mA/W, which paves the way for the new-generation on-chip optical communication.

Original languageEnglish
Pages (from-to)30299-30305
Number of pages7
JournalACS Applied Materials and Interfaces
Volume14
Issue number26
DOIs
StatePublished - 6 Jul 2022

Keywords

  • graphene
  • optoelectronic
  • photodetector
  • surface plasmon polariton
  • unidirectional propagation

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