Process for producing a preform for an optical fibre and a substrate tube suitable for use in the process
摘要
A substrate tube is inserted using glazing of tubular porous silicon dioxide green body present in a core glass layer which is produced. A first doping material increasing the refractive index of quartz glass is added to the partial region of the silicon dioxide green body, before glazing. Process for producing a preform for an optical fiber for optical communications included preparing a quartz glass substrate tube which has doping in different radial direction regions, introducing of core glass into the substrate tube from synthetic quartz glass and coating of substrate tube with a cover glass-tube.
申请公布号
EP1000909(A3)
申请公布日期
2001.01.24
申请号
EP19990122598
申请日期
1999.11.12
申请人
HERAEUS QUARZGLAS GMBH & CO. KG
发明人
SCHAPER, HARTWIG;TREBER, NORBERT;HUMBACH, OLIVER;HAKEN, UWE;JABLONOWSKI, DONALD PAUL