Lu, Gd codoped KY(WO4)2:Yb epitaxial layers: Towards integrated optics based on KY(WO4)2

Florent Gardillou, A.J. Campillo (Editor), Yaroslav E. Romanyuk, Camelia N. Borca, René-Paul Salathé, Markus Pollnau

    Research output: Contribution to journalArticleAcademicpeer-review

    75 Citations (Scopus)


    Codoping $KY{(WO_4)}_2$:Yb layers with optically inert Lu and Gd ions allows a large increase of the refractive index contrast with respect to $KY{(WO_4)}_2$ substrates. This paves the way for the realization of integrated optical circuits based on this very promising material. First riblike waveguide structures have been fabricated and propagation losses below 1 dB/cm have been evaluated. A Y-junction with a splitting ratio close to 1:1 and additional losses of 1.4 dB has also been demonstrated.
    Original languageUndefined
    Pages (from-to)488-490
    Number of pages3
    JournalOptics letters
    Issue numberLNCS4549/5
    Publication statusPublished - 2 Feb 2007


    • IOMS-APD: Active Photonic Devices
    • IR-61937
    • METIS-241937
    • EWI-11124

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