公开(公告)号：US6053013A

公开(公告)日：2000-04-25

申请号：US049030

申请日：1998-03-27

申请人： Seung-Hun Oh ,  Ki-Un Namkoong ,  Man-Seok Seo ,  Un-Chul Paek ,  Kyung-Hwan Oh ,  Ghie-Hugh Song ,  Mun-Hyun Do ,  Young-Joo Chung

发明人： Seung-Hun Oh ,  Ki-Un Namkoong ,  Man-Seok Seo ,  Un-Chul Paek ,  Kyung-Hwan Oh ,  Ghie-Hugh Song ,  Mun-Hyun Do ,  Young-Joo Chung

IPC分类号： C03B23/043 ,  C03B23/045 ,  C03B37/012 ,  C03B37/018 ,  C03B37/027 ,  C03B37/029 ,  C03B37/028 ,  C03B37/10 ,  C03B37/07 ,  C03C25/02

CPC分类号： C03B37/01248 ,  C03B23/043 ,  C03B23/045 ,  C03B37/01211 ,  C03B37/01257 ,  C03B37/01807 ,  C03B37/027 ,  C03B37/029 ,  C03B2205/08 ,  Y02P40/57

摘要： There are provided an optical fiber rod overcladding apparatus and method, and an optical fiber drawing method. In the preform rod overcladding method, a preform rod is clamped in a top chuck and leveled, and a glass tube is mounted in a bottom chuck and leveled. The preform rod is coaxially inserted into a glass tube. Then, the glass tube is preheated by the furnace and heated by the burner until the glass tube reaches a softening point. The preform rod is completely sealed in the glass tube by sucking air in a clearance between the preform rod and the glass tube by application of a negative vacuum pressure. Thus, a preform is completed.

摘要翻译： 提供了一种光纤棒外包装置和方法，以及一种光纤拉丝方法。 在预成型棒包覆方法中，将预成型棒夹在顶卡盘中并平整，并将玻璃管安装在底卡盘中并平整。 预制棒同轴地插入玻璃管中。 然后，玻璃管由炉预热并通过燃烧器加热直到玻璃管达到软化点。 通过施加负真空压力，将预制棒通过在预成型棒和玻璃管之间的间隙中吸入空气而完全密封在玻璃管中。 因此，完成预成型件。

公开(公告)号：US06519974B1

公开(公告)日：2003-02-18

申请号：US08872876

申请日：1997-06-10

申请人： Seung-Hun Oh ,  Ki-Un Namkoong ,  Jin-Han Kim

发明人： Seung-Hun Oh ,  Ki-Un Namkoong ,  Jin-Han Kim

IPC分类号： C03B37027

CPC分类号： C03B37/02754 ,  C03B37/0253 ,  C03B37/02736 ,  C03B2205/14 ,  C03B2205/16 ,  C03B2205/40 ,  C03B2205/42 ,  Y02P40/57

摘要： Disclosed is an apparatus for fabricating an optical fiber, which comprises a furnace for melting a sealed preform assembly to draw an uncoated optical fiber, a coater for coating the uncoated optical fiber, a capstan for drawing the optical fiber from the optical fiber preform by applying a drawing force, an adjoiner for holding a primary optical fiber preform inserted centrally into an overcladding tube with an equidistant space between the outer surface of the primary optical fiber preform and the inner surface of the overcladding tube, and a preform positioner for supporting the sealed preform assembly in a specified position with respect to the furnace. The adjoiner has passages that provide an inlet for receiving a flow of gas, a channel in which the flow of gas generates a reduced pressure region, and a suction tube for extending the reduced pressure region to the interior space of the overcladding tube, whereby fusing of the overcladding tube to the primary optical fiber preform is achieved during the drawing operation.

摘要翻译： 公开了一种用于制造光纤的设备，其包括用于熔化密封的预制组件以拉制未涂覆的光纤的炉，用于涂覆未涂覆的光纤的涂布机，用于通过施加从光纤预制件拉制光纤的绞盘 牵引力，用于将主光纤预制棒中心插入到外包层中的主光纤预制棒的外表面与外包层管的内表面之间具有等间隔的空间的连接器和用于支撑密封的预成型件定位器 预成型件组装在相对于炉子的指定位置。 连接器具有通道，该通道提供用于接收气体流的入口，气体流动产生减压区域的通道，以及用于将减压区域延伸到外包管内部空间的吸管，由此熔化 在拉丝操作期间实现了包层管到主光纤预制棒。

公开(公告)号：US06307993B1

公开(公告)日：2001-10-23

申请号：US09152503

申请日：1998-09-14

申请人： Un-Chul Paek ,  Kyung-Hwan Oh ,  Ghie-Hugh Song ,  Xiao-Jun Li ,  Ki-Un Namkoong ,  Seung-Hun Oh

发明人： Un-Chul Paek ,  Kyung-Hwan Oh ,  Ghie-Hugh Song ,  Xiao-Jun Li ,  Ki-Un Namkoong ,  Seung-Hun Oh

IPC分类号： G02B622

CPC分类号： G02B6/03633 ,  G02B6/02271 ,  G02B6/0281 ,  G02B6/0286

摘要： An optical fiber for wavelength division multiplexing (WDM) communications, includes: an inner core having a predetermined refractive index, formed to a first predetermined radius from a central axis of the optical fiber, an outer core having a refractive index which is lower than the refractive index of the inner core and gets linearly smaller from its inner side to its outer side, formed on an outer side of the inner core to have a second predetermined radius, and a cladding formed on an outer side of the outer core to have a third predetermined radius.

摘要翻译： 一种用于波分复用（WDM）通信的光纤，包括：具有从光纤的中心轴线形成到第一预定半径的具有预定折射率的内芯，外芯的折射率低于 内芯的折射率从其内侧到外侧线性地变小，形成在内芯的外侧，具有第二预定半径;以及包层，形成在外芯的外侧，以具有 第三预定半径。