| 摘要 |
In the production of an optical waveguide preform, particularly for the production of mono-mode optical waveguides, a tube, or several tubes, of quartz glass are fused onto a crude preform rod of quartz glass. In a known device, the crude preform rod and the quartz glass tube slid over this are clamped at the same end into jaw chucks in the headstock of the glass lathe. Since it happens that optical waveguides that have been drawn from an optical waveguide preform produced with the known device show an inadmissibly high core eccentricity, it is proposed that another jaw chuck be provided in the tailstock for the other end of the tube preform.
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