Design of isotropic photonicgaps by using a circular photonic crystal

Noriaki Horiuchi, Yusaburo Segawa, Tatsuo Nozokido, Koji Mizuno, Hiroshi Miyazaki

Research output: Contribution to journalConference articlepeer-review


Optical characteristics of a circular photonic crystal (CPC) in the frequency range of 0 to 20 GHz were investigated. The sample was made by alumina rods of 2 mm in radius and 300 mm in length. The alumina rods were arrayed in the form of concentric circles with 6-fold symmetry. The transmission spectra were calculated at various radical distances. When the radical distance was 8 mm, a photonicgap was obtained around 12 GHz. The experimental results were in good agreement with the calculations. Although the lattice positions were shifted from the ones of the CPC, the same transmission spectrum was obtained in the phase-shifted CPC. Phase-shift is a useful means for eliminating translational symmetries that would often appear in the exterior part of a CPC composed of numerous concentric circles. Isotropic photonicgaps were obtained for both a CPC and the phase-shifted CPC.

Original languageEnglish
Pages (from-to)112-118
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2004 Sep 13
EventPhotonic Crystal Materials and Devices II - San Jose, CA, United States
Duration: 2004 Jan 262004 Jan 29


  • Optical design
  • Optical properties
  • Photonic crystal

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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