Group-index and resonant field enhancement in a symmetric double-sided grated waveguide

H. Alatas, Hugo Hoekstra, Alexander A. Iskandar, May-On Tjia

    Research output: Contribution to journalArticleAcademicpeer-review

    1 Citation (Scopus)

    Abstract

    A numerical study has been carried out by means of the Green’s function method to explore possible performance improvements of a simple grated waveguide (GWg) by the variations of its grated structure. It is shown that a GWg featuring symmetric two-sided grated structure of 16 teeth with a 60nm groove depth and having a symmetric refractive index profile with a relatively large contrast between the grated and ungrated layers is capable of delivering largely improved device performance compared to that achieved previously with a one-sided grating of 40nm groove depth and asymmetric index profile.
    Original languageUndefined
    Pages (from-to)1197-1203
    Number of pages7
    JournalJournal of the Optical Society of America. A: Optics, Image Science, and Vision
    Volume28
    Issue number6
    DOIs
    Publication statusPublished - 24 May 2011

    Keywords

    • computations
    • EWI-20796
    • IR-79453
    • Interated optics
    • METIS-284922
    • Green functions

    Cite this