Tellurite glass composition for enhancing 980 nm excitation efficiency of erbium ion and fiberization characteristics

摘要

PURPOSE: A tellurite glass composition doped with erbium ion(Er3+) and possibly GeO2 and In2O3 is provided, which improves pumping efficiency of 980nm region at optical amplifier and decreases crystallization in production of optical fibers besides advantages of a conventional tellurite glass. CONSTITUTION: An Er-doped tellurite glass composition is obtained by adding 0.05-5mol% of Er ion, 0-20mol% of GeO2 and/or 0-10mol% of In2O3 to a tellurite matrix glass comprising 40-80mol% of TeO2, 1-20mol% of B2O3, 5-30mol% of metal(2+) oxide, and 1-15mol% of alkali metal oxide, where the metal is at least one selected from the group consisting of Mg, Ca, Sr, Ba, Zn and Pb, and the alkali metal is at least one selected from the group consisting of Li, Na. K. Rb and Cs.