| 摘要 |
PURPOSE:To produce a GeO2 based glass for near infrared ray transmission optical fiber having a composition which is improved in stability to crystallization and reduces Rayleigh scattering in a GeO2 based glass. CONSTITUTION:In the germanium oxide based glass composition consisting of germanium oxide (GeO2), phosphorous pentoxide (P2O5) and fluoride (MFx, M is cation, X is the number of fluorine ions), and <=40mol.% P2O5, <=40mol.% MFx, the sum of the number of ions of P and M is >=2% of that of total cations. |
