Paired modes of heterostructure cavities in photonic crystal waveguides with split band edges

Sahand Mahmoodian, Andrey A. Sukhorukov, Sangwoo Ha, Andrei Lavrinenko, Christopher G. Poulton, Kokou B. Dossou, Lindsay C. Botten, Ross C. McPhedran, C. Martijn de Sterke

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    Abstract

    We investigate the modes of double heterostructure cavities where the underlying photonic crystal waveguide has been dispersion engineered to have two band-edges inside the Brillouin zone. By deriving and using a perturbative method, we show that these structures possess two modes. For unapodized cavities, the relative detuning of the two modes can be controlled by changing the cavity length, and for particular lengths, a resonant-like effect makes the modes degenerate. For apodized cavities no such resonances exist and the modes are always non-degenerate.
    Original languageEnglish
    JournalOptics Express
    Volume18
    Issue number25
    Pages (from-to)25693-25701
    ISSN1094-4087
    DOIs
    Publication statusPublished - 2010

    Bibliographical note

    This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-25-25693. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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