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Ga8Sb32S60 chalcogenide glass is modified by arsenic (As) to further improve its thermal stability against crystallization, and the 3–5 μm mid-infrared (MIR) luminescent properties of Dy3+ ions in the modified glasses are studied. Furthermore, fibers consisting of Dy3+-doped glass core and undoped glass cladding are drawn, and the transmission losses and MIR luminescence of the fibers are investigated...
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