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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