Octahedral [ pbi6 ] works as network modifier and they are homogeneously dispersed in the disordered network by linking with [ ass3 / 2 ] pyramids by s - i bonds . systematical studies on these three glass systems indicate that they are all promising candidates for ir optical fiber materials . and ges2 - ga2s3 - cscl glasses are potential host glasses for re doped 1 . 3 m amplifiers 实验结果表明：三个系统的玻璃均为较有前途的中远红外光纤材料，且ges _ 2 - ga _ 2s _ 3 - cscl玻璃是潜在的稀土离子掺杂1 . 3 m光纤放大器的基质材料。
