Science Daily October 7, 2020
2D materials – combined with optical fibers – can enable novel applications in the areas of sensors, non-linear optics, and quantum technologies. An international team of researchers (Germany, Australia) studied the chemical vapor deposition of monolayer MoS2 and WS2 crystals on the core of microstructured exposed‐core optical fibers and their interaction with the fibers’ guided modes. Two distinct application possibilities of 2D‐functionalized waveguides to exemplify their potential are demonstrated. First, the excitonic 2D material photoluminescence is simultaneously excited and collected with the fiber modes. Then it is shown that third‐harmonic generation is modified by the highly localized nonlinear polarization of the monolayers, yielding a new avenue to tailor nonlinear optical processes in fibers. The results may lead to significant advances in optical‐fiber‐based technologies…read more. Open Access TECHNICAL ARTICLE
a) Artist’s impression of a PL experiment with an ECF‐based 2DFWG, where PL is excited with the fiber mode and is emitted into free space and into the fiber mode which can be detected in either way…Credit: Advanced Materials Communication, October 6, 2020