Glass improving on ZBLAN compositions for use in optical telecommunication systems operating in the third window waveband, contains specified oxide proportions

摘要

In the glass composition, the value R = 1.3 is given by (X2O + YO)/(Al2O3 + B2O3), where X2O is the sum of alkaline oxides in the composition and YO is the sum of alkaline earth oxides, plus ZnO and PbO in the composition.