| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved technology for drawing an optical fiber from a preform which is assembled by using a sol-gel over-cladding pipe. SOLUTION: This technology provides a core-rod and a core-rod assembly having a bushing installed on its end. The core-rod assembly is inserted into, hung, and fixed to the over-cladding pipe 20 which is not yet sintered. Both of the assembly and the pipe are heated to sinter the pipe, which results in the formation of a preform assembly. This assembly is arranged to the drawing tower by the drawing handle 14 mounted on it and is drawn for a formation of an optical fiber by over-cladding.
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