| 摘要 |
PCT No. PCT/CH92/00108 Sec. 371 Date Jan. 26, 1993 Sec. 102(e) Date Jan. 26, 1993 PCT Filed Jun. 4, 1992 PCT Pub. No. WO92/21629 PCT Pub. Date Dec. 10, 1992.A method for producing an optical fibre which has been treated with titanium dioxide to improve its corrosion resistance includes stretching an assembly consisting of an outer sleeve having engaged therein a bar which is partially or entirely made of synthetic silica. When treating said fibre, the outside of the coupling sleeve is coated, prior to assembling the components, with a deposit of vitrified synthetic silica containing titanium dioxide.
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