公开(公告)号：US20080276651A1

公开(公告)日：2008-11-13

申请号：US11801365

申请日：2007-05-09

申请人： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

发明人： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

IPC分类号： C03B37/15

CPC分类号： C03B37/01211 ,  C03B37/01245 ,  C03B37/014

摘要： An optical fiber preform is fabricated by inserting a number of core body pieces end-to-end inside a glass cylinder, wherein the pieces may have a cladding-to-core diameter (D/d) ratio within the range of one to four. The cylinder with the inserted core body pieces is mounted vertically on a furnace and heated so that the cylinder becomes elongated and its outside diameter collapses to form a core rod from which core rod sections with D/d ratios greater than five, can be cut. A soot overcladding is deposited on the circumference of a core rod section until the diameter of the deposited soot builds to a determined value. The core rod section with the deposited soot overcladding is consolidated to obtain a finished optical fiber preform. The preform preferably has a D/d ratio of about 15 or more, and an optical fiber may be drawn directly from the preform.

摘要翻译： 光纤预制棒是通过在玻璃圆筒内端到端插入多个芯体片来制造的，其中，所述片可以具有在1至4的范围内的包芯到芯直径（D / d）比。 具有插入的芯体件的气缸垂直安装在炉子上并加热，使得气缸变长并且其外径塌陷以形成芯棒，从而可以切割D / d比大于5的芯棒部分。 烟炱外包层沉积在芯棒部分的圆周上，直到沉积的烟炱的直径建立到确定的值。 具有沉积的烟灰包层的芯棒部分被固结以获得成品的光纤预制件。 预成型体优选具有约15或更大的D / d比，并且可以从预成型件直接拉制光纤。

公开(公告)号：US08196437B2

公开(公告)日：2012-06-12

申请号：US12902316

申请日：2010-10-12

申请人： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

发明人： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

IPC分类号： C03B37/01 ,  C03B37/012 ,  C03B37/02

CPC分类号： C03B37/01211 ,  C03B37/01245 ,  C03B37/014

摘要： Core rod sections useable for production of finished optical fiber preforms are fabricated by inserting one or more core body pieces axially end-to-end inside a glass cylinder, thereby defining joints between adjacent ones of the inserted pieces. The cylinder is mounted with the contained core body pieces in the region of a furnace. The glass cylinder and core body pieces are heated together in the furnace, thereby elongating the cylinder and the core body pieces contained in the cylinder, and the cylinder collapses to form a finished core rod. Core rod sections are cut from the finished core rod at positions that coincide with the joints between the core body pieces. One or more of the cut core rod sections are useable for the production of optical fiber preforms.

摘要翻译： 用于生产成品光纤预制棒的芯棒部分通过将一个或多个芯体件沿轴向端对端插入玻璃圆筒内而制成，从而限定相邻插入件之间的接合部。 气缸在炉的区域中安装有包含的芯体件。 玻璃圆筒和芯体片在炉中一起加热，从而使容纳在圆筒中的圆筒和芯体片伸长，并使圆筒塌缩，形成成品芯棒。 在与核心体部件之间的接合部重合的位置处，从完成的芯棒切割出芯棒部分。 一个或多个切割芯棒部分可用于生产光纤预制棒。

公开(公告)号：US20110023551A1

公开(公告)日：2011-02-03

申请号：US12902316

申请日：2010-10-12

申请人： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

发明人： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

IPC分类号： C03B37/15 ,  C03B37/16

CPC分类号： C03B37/01211 ,  C03B37/01245 ,  C03B37/014

摘要： Core rod sections useable for production of finished optical fiber preforms are fabricated by inserting one or more core body pieces axially end-to-end inside a glass cylinder, thereby defining joints between adjacent ones of the inserted pieces. The cylinder is mounted with the contained core body pieces in the region of a furnace. The glass cylinder and core body pieces are heated together in the furnace, thereby elongating the cylinder and the core body pieces contained in the cylinder, and the cylinder collapses to form a finished core rod. Core rod sections are cut from the finished core rod at positions that coincide with the joints between the core body pieces. One or more of the cut core rod sections are useable for the production of optical fiber preforms.

摘要翻译： 用于生产成品光纤预制棒的芯棒部分通过将一个或多个芯体件沿轴向端对端插入玻璃圆筒内而制成，从而限定相邻插入件之间的接合部。 气缸在炉的区域中安装有包含的芯体件。 玻璃圆筒和芯体片在炉中一起加热，从而使容纳在圆筒中的圆筒和芯体片伸长，并使圆筒塌缩，形成成品芯棒。 在与核心体部件之间的接合部重合的位置处，从完成的芯棒切割出芯棒部分。 一个或多个切割芯棒部分可用于生产光纤预制棒。

公开(公告)号：US07641969B2

公开(公告)日：2010-01-05

申请号：US11088076

申请日：2005-03-23

申请人： Joseph P. Fletcher, III

发明人： Joseph P. Fletcher, III

IPC分类号： G02B6/036 ,  D02G3/22

CPC分类号： C03B37/01211 ,  C03B2201/03 ,  C03B2201/04 ,  Y10T428/2913

摘要： An optical fiber preform is assembled by inserting core rod segments axially end to end inside of a first glass overclad tube having a first, relatively low concentration of a given impurity that contributes to signal attenuation in an optical fiber to be drawn from the preform. The first overclad tube with the contained core rod segments are inserted in a second glass tube having a second concentration of the given impurity which is higher than the first concentration. The wall thickness of the first overclad tube is preferably less than that of the second overclad tube, thus reducing the amount of high purity glass needed to form the first overclad tube and attendant manufacturing costs. The core rod segments may include salvageable remnants from a single long core rod produced, for example, by vapor axial deposition (VAD).

摘要翻译： 通过将芯棒片段轴向端对端插入第一玻璃外包层管内装配光纤预制件，第一玻璃外包管具有第一相对低浓度的给定杂质，这有助于从预成型件中拉出的光纤中的信号衰减。 将具有所述芯棒段的第一外包管插入具有高于第一浓度的给定杂质的第二浓度的第二玻璃管中。 第一外包层管的壁厚优选小于第二外包层管的壁厚，从而减少形成第一外包层管所需的高纯度玻璃的量和伴随的制造成本。 芯棒段可以包括来自例如通过气相轴向沉积（VAD）产生的单个长芯棒的可补救残余物。

公开(公告)号：US07722777B2

公开(公告)日：2010-05-25

申请号：US11582168

申请日：2006-10-17

申请人： Joseph P. Fletcher, III ,  Lazhar Mazlout ,  Michael Pate

发明人： Joseph P. Fletcher, III ,  Lazhar Mazlout ,  Michael Pate

IPC分类号： C03C15/00 ,  B08B3/00

CPC分类号： B08B3/04 ,  B08B2240/02 ,  C03B37/01205 ,  Y02P40/57

摘要： Core rods or other glass components associated with optical fiber preforms are cleaned by loading them into a number of first sleeves, and partially obstructing entrance and exit ends of the sleeves to retain the components. The sleeves are contained inside a second sleeve so that the entrance ends of the first sleeves face an entrance end of the second sleeve. A fluid delivery system supplies cleaning fluids to the entrance end of the second sleeve, so that the fluids enter the first sleeves and contact exposed surfaces of the loaded components. The fluids leave the exit ends of the first sleeves and purge from an exit end of the second sleeve. Separators may be placed between the components in the first sleeves to enhance cleaning action and to cushion adjacent end faces of the components. Cleaned components may be unloaded from the first sleeves without risk of contamination.

摘要翻译： 与光纤预制件相关联的芯棒或其他玻璃部件通过将其装入多个第一套筒中而被清洁，并且部分地阻塞套筒的入口和出口端部以保持部件。 袖子被容纳在第二套筒内，使得第一套筒的入口端面向第二套筒的入口端。 流体输送系统将清洁流体提供给第二套筒的入口端，使得流体进入第一套筒并接触所加载的部件的暴露表面。 流体离开第一套筒的出口端并从第二套筒的出口端排出。 分离器可以放置在第一套筒中的部件之间以增强清洁作用并缓冲部件的相邻端面。 清洁的部件可以从第一个套筒卸载，没有污染的风险。

公开(公告)号：US07143611B2

公开(公告)日：2006-12-05

申请号：US10665623

申请日：2003-09-19

申请人： Joseph P. Fletcher, III ,  Andrew W. Jones ,  Thomas J. Miller ,  Don H. Smith ,  Shunhe Xiong

发明人： Joseph P. Fletcher, III ,  Andrew W. Jones ,  Thomas J. Miller ,  Don H. Smith ,  Shunhe Xiong

IPC分类号： C03B37/028 ,  B32B9/00

CPC分类号： C03B37/02754 ,  C03B37/01211 ,  C03B2205/14 ,  C03B2205/16 ,  Y10T428/2933 ,  Y10T428/2964

摘要： Embodiments of the invention include an optical fiber preform assembly and a method for making optical fiber using the preform assembly. The assembly includes a preform core rod, at least one overclad tube formed around the preform core rod, a handle attached to one end of the overclad tube, and a refractory material positioned in the overclad tube between the preform core rod and the handle. The refractory material reduces if not prevents movement of the preform core rod into the handle during the fiber draw process. Preferably, the refractory material is made of, e.g., magnesium oxide and/or aluminum oxide, and has a melting point, e.g., greater than approximately 2000 degrees Celsius. Embodiments of the invention also include a method for making optical fiber using this preform assembly.

摘要翻译： 本发明的实施例包括光纤预制组件和使用该预制组件制造光纤的方法。 该组件包括预制棒芯棒，至少一个围绕预制棒芯棒形成的外包层管，附接到外包层管的一端的手柄，以及位于预型芯棒和手柄之间的外包层管中的耐火材料。 如果不是在纤维拉伸过程中防止预成型芯棒移动到把手中，则耐火材料减少。 优选地，耐火材料由例如氧化镁和/或氧化铝制成，并且具有例如大于约2000摄氏度的熔点。 本发明的实施例还包括使用该预制组件制造光纤的方法。

公开(公告)号：US07836728B2

公开(公告)日：2010-11-23

申请号：US11801365

申请日：2007-05-09

申请人： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

发明人： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

IPC分类号： C03B37/01 ,  C03B37/012 ,  C03B37/02

CPC分类号： C03B37/01211 ,  C03B37/01245 ,  C03B37/014

摘要： An optical fiber preform is fabricated by inserting a number of core body pieces end-to-end inside a glass cylinder, wherein the pieces may have a cladding-to-core diameter (D/d) ratio within the range of one to four. The cylinder with the inserted core body pieces is mounted vertically on a furnace and heated so that the cylinder becomes elongated and its outside diameter collapses to form a core rod from which core rod sections with D/d ratios greater than five, can be cut. A soot overcladding is deposited on the circumference of a core rod section until the diameter of the deposited soot builds to a determined value. The core rod section with the deposited soot overcladding is consolidated to obtain a finished optical fiber preform. The preform preferably has a D/d ratio of about 15 or more, and an optical fiber may be drawn directly from the preform.

摘要翻译： 光纤预制棒是通过在玻璃圆筒内端到端插入多个芯体片来制造的，其中，所述片可以具有在1至4的范围内的包芯到芯直径（D / d）比。 具有插入的芯体件的气缸垂直安装在炉子上并加热，使得气缸变长并且其外径塌陷以形成芯棒，从而可以切割D / d比大于5的芯棒部分。 烟炱外包层沉积在芯棒部分的圆周上，直到沉积的烟炱的直径建立到确定的值。 具有沉积的烟灰包层的芯棒部分被固结以获得成品的光纤预制件。 预成型体优选具有约15或更大的D / d比，并且可以从预成型件直接拉制光纤。