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Quantum Dots coatings inside Photonic Crystal Fibers for temperature sensing

Temperature sensitive nanofilms based on quantum dots (QDs) has been deposited on the inner holes of a photonic crystal fiber (PCF) using the layer by layer electrostatic self-assembly method. The sensing structure is based on a PCF fiber segment spliced between two multimode fibers (MMF) of different diameters. The sensors showed a linear variation of the intensity and wavelength emission for a temperature range from -20degC to 70degC.