Abstract
By melting a mixture of high-purity oxides in a platinum crucible under flowing purified oxygen, we have prepared (TeO2)0.75(WO3)0.25 glass with a total content of 3d transition metals (Fe, Ni, Co, Cu, Mn, Cr, and V) within 0.4 ppm by weight, a concentration of scattering centers larger than 300 nm in size below 102 cm−3, and an absorption coefficient for OH groups (λ ∼ 3 μm) of 0.008 cm−1. The absorption loss in the glass has been determined to be 115 dB/km at λ = 1.06 μm, 86 dB/km at λ = 1.56 μm, and 100 dB/km at λ = 1.97 μm. From reported specific absorptions of impurities in fluorozirconate glasses and the impurity composition of the glass studied here, the absorption loss at λ ∼ 2 μm has been estimated at ≤100 dB/km. The glass has been drawn into a glass-polymer fiber, and the optical loss spectrum of the fiber has been measured.
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Original Russian Text © A.N. Moiseev, V.V. Dorofeev, A.V. Chilyasov, V.G. Pimenov, T.V. Kotereva, I.A. Kraev, L.A. Ketkova, A.F. Kosolapov, V.G. Plotnichenko, V.V. Koltashev, 2011, published in Neorganicheskie Materialy, 2011, Vol. 47, No. 6, pp. 743–747.
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Moiseev, A.N., Dorofeev, V.V., Chilyasov, A.V. et al. Low-loss, high-purity (TeO2)0.75(WO3)0.25 glass. Inorg Mater 47, 665–669 (2011). https://doi.org/10.1134/S0020168511060161
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DOI: https://doi.org/10.1134/S0020168511060161