GLASS FOR OPTICAL AMPLIFIER FIBER

摘要

A germanate glass composition suitable for use in a fiber amplifier for broadband amplification of optical signals is provided. The glass preferably includes 35-75 % GeO2, 0-45 % PbO, 5-20 % BaO, 5-20 % ZnO, and 2-10 % R2O (R=Na, Li, K). It is doped with thulium ions (Tm<3+>) and codoped with holmium ions (Ho<3+>). The glass composition of the invention results in a remarkably large bandwidth as compared with previous glasses. It is also highly compatible with existing silica optical fibers.