Study on the spectral properties of erbium ytterbium co-doped bismuth phosphate glass

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 0.6×10-20cm2 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.