Light propagation studies on laser modified waveguides using scanning near-field optical microscopy

Xavier Borrisé, Gabriel Abadal, David Jiménez, Francesc Pérez-Murano, Núria Barniol, Zachary James Davis, Anja Boisen

    Research output: Contribution to journalArticleResearchpeer-review

    2 Citations (Scopus)

    Abstract

    By means of direct laser writing on Al, a new method to locally modify optical waveguides is proposed. This technique has been applied to silicon nitride waveguides, allowing modifications of the optical propagation along the guide. To study the formed structures, a scanning near-field optical microscope (SNOM) has been used. The laser modifications locally changes the optical properties of the waveguide. The change in the effective refractive index is attributed to a TE to TM mode conversion. Thus, the laser modification might be a new way to fabricate optical mode converters.
    Original languageEnglish
    Pages (from-to)809-811
    JournalIEEE Photonics Technology Letters
    Volume13
    DOIs
    Publication statusPublished - 1 Aug 2001

    Keywords

    • Integrated optics
    • Novel lithographic techniques
    • Optical measurements
    • Polarization conversion
    • Scanning near-field optical microscopy (SNOM)

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