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 journalArticle

    29 Citations (Scopus)


    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
    Issue number1
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed



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

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