High-Quality Monolithic Distributed Bragg Reflector Cavities and Lasers in Alumina Channel Waveguides

Edward Bernhardi, Hendricus A.G.M. van Wolferen, Kerstin Worhoff, R.M. de Ridder, Markus Pollnau

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic


    The design, fabrication, and characterization of surface relief Bragg gratings integrated with aluminum oxide ridge waveguides are reported. The grating lengths varied between 1.25 mm and 4.75 mm and were used to create various distributed Bragg reflector (DBR) cavities. The measured grating induced loss was 0.08 ± 0.01 dB/cm, while the maximum grating reflectivity exceeded 99%. DBR cavities with a finesse up to 147 and quality factors of more than 1.0 × 106 were demonstrated. The grating technology enabled the demonstration of the first DBR laser in this waveguide platform with a pump-power-limited output power of 47 mW and a slope efficiency of 67%.
    Original languageUndefined
    Title of host publicationProceedings of the 2011 Annual Symposium of the IEEE Photonics Benelux Chapter
    Place of PublicationGhent, Belgium
    PublisherGhent University
    Number of pages4
    ISBN (Print)978-90-76546-00-1
    Publication statusPublished - 1 Dec 2011
    Event16th Annual Symposium of the IEEE Photonics Benelux Chapter 2011 - Ghent, Belgium
    Duration: 1 Dec 20112 Dec 2011
    Conference number: 16

    Publication series

    NameProceedings of the 2011 Anual Symposium of the IEEE Photonics Benelux Chapter
    PublisherDepartment of Information Technology, Ghent University


    Conference16th Annual Symposium of the IEEE Photonics Benelux Chapter 2011
    Internet address


    • METIS-285007
    • EWI-21290
    • IR-79369

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