| 摘要 |
PURPOSE:To connect optical fibers with a small loss, by immersing the end part of one optical fiber in a liquid, which etches a dopant containing quartz glass faster than a quartz glass, and immersing the end part of the other optical fiber in a liquid, which etches the dopant containing quartz glass slower than the quartz glass, and butting both end faces. CONSTITUTION:An optical fiber where an SiO2 containing a GeO2 is used for a core 12 and an SiO2 which does not contain a dopant is used for a clad 11 is immersed in an HF liquid and is etched to obtain an end face 14 where the core 12 is recessed. Meanwhile, a liquid where the HF liquid is added to NH4F is used as the etching liquid to an end face 13 where the core 12 projects. Both optical fiber end faces 13 and 14 are butted. Thus, it is unnecessary to connect them while monitoring the intensity of light, and optical fibers are connected with a small loss. |
