Analysis and design of single-defect cavities in a three-dimensional photonic crystal

Makoto Okano, Alongkarn Chutinan, Susumu Noda

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

We theoretically investigate the properties of a single-defect cavity, which is created by adding dielectric material to a three-dimensional (3D) photonic crystal, by utilizing the plane-wave expansion method and the 3D finite-difference time-domain method. We show that the resonant frequency can be controlled well by changing the defect size, and a large frequency separation of the defect modes can be achieved by adjusting the defect shape and position appropriately. We calculate the time response of each defect mode in order to examine the dependence of the quality factor on the number of stacked stripes and on the resonant frequency. The quality factor increases exponentially with the number of stacked stripes. Furthermore, a large quality factor can be obtained with relatively small number of stacked stripes and can be kept very large over a wide frequency range. These results provide significant design rules for developing a single-mode high-Q cavity in a 3D photonic crystal.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number16
DOIs
Publication statusPublished - 2002 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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