Investigate on the Feasibility of Introducing Dopants with High Phonon Enegy into Tellurite Host to Enhance 1.5μm Emission Efficiency

The glasses samples of Er doped boro-tellurite, germanium-tellurite, phosphate-tellurite with alternant- changed components have been prepared. The obtained data indicated that introducing the dopants (H₃BO₃ and NaPO₃) into tellurite hosts can not enhance 1.5 mum emission efficiency because of higher phonon energy and the lower refractive indexes n and GeO₂ owing to lower phonon energy than that of borate and phosphate can enhance 1.5 mum emission efficiency when introduced into tellurite hosts. In order to obtain higher 1.5 mum emission efficiency the dopants owing to higher the index of refraction is suggested.