Triply-doped germanate glasses for ultra-broadband optical devices

Abstract

Ultra-broadband emission from 1300 to 1600 nm were obtained in Nd³⁺/Tm³⁺/Er³⁺ triply-doped germanate glasses, and single mode K⁺-Na⁺ion-exchanged channel waveguides at 1550 nm were obtained. The rare earth ions triply doped glasses are promising for the realization of ultra-broadband amplifiers, tunable lasers and broadband light sources.