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In this communication we report the study of novel optical fibers doped by semiconductor quantum dots (QDs). Different approaches have been investigated to realize liquid-core fibers filled with PbSe QDs and hollow-core fibers with deposition of layers of these nanoparticles. The optical characterization demonstrates good levels of QD emission which can be tunable over a wide range of IR wavelengths. Finally, for the first time, we propose also the fabrication of PbS QDs solid-core fibers by melt and draw technique. These promising results could give birth to a new family of amplifiers and laser photonic devices. [ABSTRACT FROM PUBLISHER]

PbS QDs embedded in silicate glass have been prepared and studied for their absorption and emission characteristics. The control and the understanding of heat-treatment conditions have enabled successful fabrication of QDs doped optical fibers. [ABSTRACT FROM PUBLISHER]