Tellurite glass: a new candidate for fiber devices

Abstract The physical properties of R2O-ZnO-TeO2 glasses have been studied for their feasibility for fiber drawing and rare earth doping. A tellurite glass fiber with less than 1 dB/m loss has been made by the rod-in-tube method. The spectroscopic properties of rare earth ions (Pr3+, Nd3+, Er3+, and Tm3+) in tellurite glass are discussed and compared with silica, fluoride and chalcogenide glasses.