公开(公告)号：US06584806B2

公开(公告)日：2003-07-01

申请号：US09916324

申请日：2001-07-30

申请人： Emmanuel Petitfrere ,  Gérard Lavanant ,  Benoit Gouez

发明人： Emmanuel Petitfrere ,  Gérard Lavanant ,  Benoit Gouez

IPC分类号： C03B37018

CPC分类号： C03B37/01291 ,  Y02P40/57

摘要： A method of manufacturing a preform, the method comprising rotating a primary preform about an axis X, establishing relative displacement in translation between the preform and a plasma torch, and introducing a glass powder into the plasma flame, the glass powder being accelerated prior to penetrating into the plasma flame by an accelerator gas introduced into the flow of glass powder, said process being performed in an enclosure and said introduction being performed into an atmosphere at a regulated pressure lower than the pressure outside the enclosure. Apparatus for manufacturing the preform comprises an enclosure connected to a unit for regulating the pressure inside the enclosure.

公开(公告)号：US06314767B2

公开(公告)日：2001-11-13

申请号：US09280394

申请日：1999-04-05

申请人： Didier Pezet ,  Gérard Lavanant

发明人： Didier Pezet ,  Gérard Lavanant

IPC分类号： C03B37029

CPC分类号： C03B37/01486 ,  C03B23/045 ,  C03B37/01884 ,  C03B37/02736

摘要： An apparatus and method for manufacturing an optical fiber preform from a tube of vitreous material. A holding device holds the tube during manufacture of the preform and a heater supplies the necessary heat energy for preform manufacturing. A diffuser is disposed adjacently to an end of the tube of vitreous material to trap and diffuse light radiation generated in the tube by the heater. The invention can be used in an apparatus for drawing an optical fiber from a preform. The diffuser traps and diffuses light radiation generated in the optical fiber preform by a fiber drawing oven.

摘要翻译： 一种用于从玻璃质材料管制造光纤预制件的装置和方法。 保持装置在制造预制件期间保持管，并且加热器为预制件制造提供必要的热能。 扩散器邻近于玻璃质材料管的端部设置，以通过加热器捕获和扩散在管中产生的光辐射。 本发明可用于从预成型件拉制光纤的装置。 扩散器通过纤维拉伸炉捕获并扩散在光纤预制件中产生的光辐射。