基于光通信技术发展对光放大器材料的带宽要求，研究了掺铒铋磷酸盐玻璃的结构、熔制性能，以及其光谱性能，并且用Judd－Ofelt理论进行了光谱计算分析。得到了一种以铋磷酸盐为基质的光放大器玻璃材料，其折射率为1．778，荧光半峰全宽为54nm，发射截面为0．61×10^－20cm²，其荧光寿命达到了8ms。结果表明，铒镱共掺铋磷酸盐玻璃是一种良好的宽带放大器材料。

Because of the need for broad bandwidth of optical materials with the development of optical communication,the spectral properties,the fusion properties and the structure of erbium doped bismuth phosphate glass were studied,and the spectrum was calculated based on the Judd-Ofelt theory. A suitable material for optical amplifiers was obtainedwith refractive index of 1.778,half of the fluorescence width of 54nm,the emission cross section of 0.6 × 10^－20 cm² and the fluorescence lifetime of 8ms. The results show that erbium ytterbium co-doped bismuth phosphate glass is a good material for broad bandwidth amplifiers.