High-order bandgaps in one-dimensional photonic crystals

G. V. Morozov, F. Placido

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Bandgaps, including high-order ones, of one-dimensional photonic crystals are analysed. Accurate analytical expressions for band edges for both s and p polarized light are derived. As a consequence, the conditions for bandgap closing are obtained in a simple analytical form. The derivation is based on a perturbative expansion of the dispersion equation using a new parameter which remains small around the band edges of all physically feasible one-dimensional photonic crystals.
Original languageEnglish
Article number045101
JournalJournal of Optics
Volume12
Issue number4
DOIs
Publication statusPublished - Apr 2010

Keywords

  • bi-layer photonic crystal
  • bandgaps
  • perturbative expansion of dispersion equation

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