| 摘要 |
PURPOSE:To enable ready formation of a glass body for optical transmission having a constant dopant concentration gradient, by dipping porous glass homogeneously soaked with the dopant in hot water, taking out the porous glass, drying the porous glass at a specific temperature or above and sintering the dried porous glass. CONSTITUTION:A dopant is diffused into porous glass and the resultant sample is placed in a solvent to produce distribution in the dopant concentration. The dopant concentration is then fixed and the sample is subsequently passed through drying and sintering to provide a glass body having refractive index distribution which is a glass body for optical transmission. In the process for producing the glass body, the following method is used. That is distribution is formed in the sample homogeneously soaked with the dopant in hot water and the sample is directly dried at >=150 deg.C temperature in producing distribution of dopant concentration and fixing the distribution thereof. |
