Directional field enhancement of dielectric nano optical disc antenna arrays

Ivan Wang, Ya Ping Du

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


This paper presents a discussion on the directive field enhancement of dielectric disc antenna arrays in optical band. The property of dielectric material is addressed, and field modes in a cylindrical resonator are discussed. It is identified that the fundamental mode of HE11δgenerates the far field with a higher directivity than other modes. More effective field enhancement in the radiation direction could be achieved by using multiple-disc antenna arrays. Simulation examples indicate that the directivity of a disc antenna array varies with the disc spacing. The maximum directivity is observed when the disc spacing is approximately equal to the half of the vacuum wavelength. The maximum directivity can be improved significantly when the disc number is increased.
Original languageEnglish
Pages (from-to)126-130
Number of pages5
JournalOptical Materials
Issue number1
Publication statusPublished - 1 Nov 2011


  • Directivity
  • Disc antenna
  • Field enhancement
  • Nano antenna
  • Optical

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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