FREMGANGSMAADE TIL FREMSTILLING AF GLASRAAEMNE TIL OPTISKE FIBRE,申请号DK19850004550-传众专利搜索

FREMGANGSMAADE TIL FREMSTILLING AF GLASRAAEMNE TIL OPTISKE FIBRE

申请公布号：DK455085(A)

申请号：DK19850004550

申请日期：1985.10.04

申请公布日期：1986.04.06

申请人：

SUMITOMO ELECTRIC INDUSTRIES LTD.

发明人：HOSHIKAWA MASAO;KYOTO MICHIHISA;YANO KOJI;TANAKA GOTARO

分类号：C03C13/04;C03B37/014;C03B37/12;C03B37/14;G02B6/00;(IPC1-7):C03B/

主分类号：C03C13/04

摘要：<p>An optical fiber comprising a core essentially made of quartz and a cladding made of fluorine added quartz is fabricated with good productivity from a glass preform produced by a method comprising maintaining a hollow cylindrical porous glass preform in a first high temperature atmosphere comprising at least one fluorine-containing compound with jetting a cooling gas through the central hollow part of the porous glass preform to grade the amount of fluorine to be added in the radial direction of the porous glass preform and then sintering the porous glass preform in a second high temperature atmosphere kept at a temperature higher than the first high temperature atmosphere to make it transparent.</p>