We also described the amplification mechanism of erbium doped fiber amplifier and thulium doped fiber amplifier, obtaine文章介绍了掺铒和掺铥放大光纤的光放大机理，综述了掺铒碲酸盐和掺铥碲酸盐玻璃放大光纤的研究近况，得出了稀土掺杂碲酸盐玻璃放大光纤越来越接近实用化的结论。