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17 May 2010 Helical core optical fibre made of Nd3+/Yb3+-doped oxyfluoride silicate glass
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Abstract
The properties of helical-core optical fibre made by authors from Nd3+/Yb3+-doped oxyfluoride silicate glass are presented. The construction and forming conditions of the helical-core optical fibre enabled to obtain the helix pitch from several mm and the off-set ranging from 10 μm to 200 μm. The paper also presents optimisation of Nd3+/Yb3+ ratio to enhance the emission bandwidth at 1 μm. In consequence of matching the values of the emission cross-section σem(Nd)and the absorption cross-section σabs(Yb) in the glass doped with 0.15Nd3+:0.45Yb3+ a broad (Δλ = 100nm) luminescence band in the vicinity of 1μm was obtained, which was the result of overlapping emission transitions: 2F5/22F7/2 in ytterbium and 4F3/24I11/2 in neodymium.
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D. Dorosz, M. Kochanowicz, J. Zmojda, and J. Dorosz "Helical core optical fibre made of Nd3+/Yb3+-doped oxyfluoride silicate glass", Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77211B (17 May 2010); https://doi.org/10.1117/12.854766
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