Manufacture of optical fibre preforms
Номер патента: CA1232569A
Опубликовано: 09-02-1988
Автор(ы): Adrian C. Greenham, Bruce A. Nichols, Ronald A. Evans, Steven L. Cundy
Принадлежит: General Electric Co PLC
Опубликовано: 09-02-1988
Автор(ы): Adrian C. Greenham, Bruce A. Nichols, Ronald A. Evans, Steven L. Cundy
Принадлежит: General Electric Co PLC
Реферат: ABSTRACT In a method of manufacturing optical fibre preforms by causing a chemical reaction to take place in a gaseous reaction mixture (5) so as to form a coating (14) on a glass substrate (1) wherein the reaction is promoted by the production of a plasma in the mixture by means of a microwave cavity (12) powered by a microwave generator (15) and conductive tube (16) positioned around the reaction tube system, it has been found that if the conductive tube is made of metal, metal ions diffuse through to the substrate and contaminate it. Therefore, the conductive tube according to the invention is made of graphite.
Manufacture of preforms for optical fibres
Номер патента: GB2235191A. Автор: Sergent Christian Le,Josiane Ramos. Владелец: Alcatel NV. Дата публикации: 1991-02-27.