C band and L band erbium doped fiber amplifiers(EDFAs) are made by this high concentration EDF.The fluorescence spectrum and gain characteristics of these two EDFAs are measured.

• 利用这种铋镓铝共掺的高浓度掺铒光纤制成了C波段和L波段的掺铒光纤放大器(EDFA),测试这两种放大器的荧光谱和增益谱线。