Properties, applications and fabrication of photonic crystals with ring-shaped holes in silicon-on-insulator

A. Säynätjoki (Corresponding Author), M. Mulot, K. Vynck, D. Cassagne, Jouni Ahopelto, H. Lipsanen

    Research output: Contribution to journalArticleScientificpeer-review

    30 Citations (Scopus)

    Abstract

    We show that photonic crystals with ring-shaped holes (RPhCs) exhibit superior properties compared to conventional photonic crystals (PhCs). At low air-fill factors RPhCs can have a larger bandgap than conventional PhCs. Moreover, RPhC waveguides with both high group index and small group velocity dispersion can be designed. RPhC waveguides are also more sensitive to external refractive index changes, which is attractive for sensor applications. Finally we set up a procedure to pattern RPhCs in silicon-on-insulator.
    Original languageEnglish
    Pages (from-to)42 - 46
    Number of pages5
    JournalPhotonics and Nanostructures: Fundamentals and Applications
    Volume6
    Issue number1
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Guided waves
    • Integrated optics materials
    • Optical systems design
    • Waveguide
    • Photonic integrated circuits
    • Dispersion
    • Photonic crystals

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