公开(公告)号：US06209358B1

公开(公告)日：2001-04-03

申请号：US09234313

申请日：1999-01-21

申请人： Bernard Wurier ,  Michel Hertz ,  Jean-Philippe Francois

发明人： Bernard Wurier ,  Michel Hertz ,  Jean-Philippe Francois

IPC分类号： C03B3702

CPC分类号： C03B37/027 ,  C03B37/02736 ,  C03B37/029 ,  C03B2205/30 ,  C03B2205/69 ,  Y02P40/57

摘要： In the fiber-drawing method, a first preform is lowered along a fiber-drawing axis through a fiber-drawing oven so as to be heated and drawn down into an optical fiber, and a second preform is lowered along the fiber-drawing axis through the fiber-drawing oven so as to be heated and drawn down in turn after the first preform has been withdrawn. While the first preform is being drawn down into a fiber, the second preform is heated in a preheating oven disposed adjacent to the fiber-drawing oven so as to raise the second preform to a temperature which is slightly below the fiber-drawing temperature, and the preheated second preform is transferred quickly onto the fiber-drawing axis after the first preform has been withdrawn therefrom. This method contributes to increasing the capacity for producing optical fibers.

摘要翻译： 在纤维拉伸法中，第一预成型体沿着拉丝轴线通过纤维拉伸炉降低，以被加热并拉伸成光纤，并且第二预成型体沿着拉丝轴线通过 该纤维拉伸炉在第一预型件已经被取出之后依次被加热和拉下。 当第一预成型件被拉伸成纤维时，第二预型件在与拉丝炉邻近设置的预热炉中加热，以将第二预制件升高到略低于拉丝温度的温度，以及 在第一预制件从其中取出之后，将预热的第二预型件快速地转移到拉丝轴上。 该方法有助于增加制造光纤的能力。

公开(公告)号：US5848093A

公开(公告)日：1998-12-08

申请号：US998810

申请日：1997-12-29

申请人： Jacques Goudeau ,  Henri Marc Michaud ,  Jean-Philippe Francois ,  Thierry Auvray ,  Michel Hertz ,  Patrick McKenzie

发明人： Jacques Goudeau ,  Henri Marc Michaud ,  Jean-Philippe Francois ,  Thierry Auvray ,  Michel Hertz ,  Patrick McKenzie

IPC分类号： C03B37/029 ,  H05B6/26

CPC分类号： C03B37/029 ,  C03B2205/64 ,  C03B2205/90 ,  Y02P40/57

摘要： The fiber-drawing furnace includes a graphite tube positioned vertically, heated by induction, and subjected internally to an inert atmosphere, said tube internally defining a fiber-drawing chamber. In the furnace said graphite tube is a double-walled tube having an inner wall and an outer wall, its inner wall is porous and separates the fiber-drawing chamber from a peripheral chamber defined between the walls and subjected to a flow of inert gas which diffuses through said porous wall into said fiber-drawing chamber. Application to drawing down an optical-fiber preform.

摘要翻译： 拉丝炉包括垂直定位的石墨管，通过感应加热，并在内部经受惰性气氛，所述管内部限定纤维拉伸室。 在炉中，所述石墨管是具有内壁和外壁的双壁管，其内壁是多孔的，并且将纤维拉伸室与限定在壁之间的周边室分离并且经受惰性气体流 通过所述多孔壁扩散到所述纤维拉伸室中。 用于拉制光纤预制棒的应用。

公开(公告)号：US06385379B1

公开(公告)日：2002-05-07

申请号：US09505771

申请日：2000-02-17

申请人： Jean-Claude Rousseau ,  Michel Hertz ,  Marianne Paillot ,  Raphaelle Sauvageon ,  Jean-Francois Chariot

发明人： Jean-Claude Rousseau ,  Michel Hertz ,  Marianne Paillot ,  Raphaelle Sauvageon ,  Jean-Francois Chariot

IPC分类号： G02B616

CPC分类号： G02B6/02214 ,  G02B6/02

摘要： A stepped index optical fiber is disclosed having a chromatic dispersion cancellation wavelength less than 1 280 nm or even 1 250 nm. The fiber can be used for wavelength-division multiplex transmission not only in the window around 1 550 nm but also in the window around 1 300 nm. The chromatic dispersion in the second window enables transmission without excessively penalizing non-linear effects. A fiberoptic transmission system which uses the above fiber as line fiber is also disclosed.

摘要翻译： 公开了一种具有小于1 280nm或甚至1 250nm的色散消除波长的阶梯折射率光纤。 该光纤不仅可以在大约1 550nm的窗口中，而且在大约1 300nm的窗口中用于波分复用传输。 第二窗口中的色散使得能够传输而不会过度惩罚非线性效应。 还公开了使用上述光纤作为线光纤的光纤传输系统。