Patent ID: 6660672
Filing Date: 2003-12-09
Classification: C03C,H01S

Abstract:
An alkali halide-doped sulfide glass for an optical amplifier, comprising:a three-component system of Geâ€”Gaâ€”S, said three-component doped with a Pr3+ and an alkai halide, wherein said three-component system comprises a mixture of GeGaS and CsBr, expressed in terms of mole percent on the sulfide basis, and wherein said mixture is selected from the group consisting of 90-92% (Ge0.25Ga0.10S0.65) and 8-10% (CsBr); 94.5-96.0% (Ge0.29Ga0.05S0.66) and 4-5.5% (CsBr); and, 84.2-85.25% (Ge0.18Ga0.18S0.64) and 14.75-15.75% (CsBr); wherein a specification concentration of CsBr/GaS3/2&gE;1.