Active nanowaveguides in polymer doped with CdSe-ZnS core-shell quantum dots

We report a strategy for the fabrication of active nanowaveguides (nanoWGs) in polymer doped with CdSe-ZnS core-shell quantum dots (QDs). The nanoWGs, with an absorption coefficient of 247 cm(-1) and a self-absorption coefficient of 77 cm(-1), were fabricated by a direct drawing method. The characterization indicates that the nanoWGs, in which the QDs act as nanoemitters under an optical pump, exhibit high photoluminescence efficiency and high photo-bleaching resistance. The QD-doped polymer nanoWGs would be a promising active waveguide for miniaturized nanophotonic integration.