| 摘要 |
<p>The invention has as an object a plasma torch for overcladding a primary preform of an optical fibre, the plasma torch comprises a confinement tube for confining an induced plasma, preferable in quartz for reason of costs and resistance to temperature, and a torch base. The torch base has a surface internal to the confinement tube, said internal surface being created with a ceramic material. The plasma torch of the invention has an improved lifetime when it is used with high powers of the current generator.</p> |
