公开(公告)号：US20140245796A1

公开(公告)日：2014-09-04

申请号：US14354130

申请日：2012-10-17

Applicant: HERAEUS QUARZGLAS GMBH & CO. KG ,  FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG

Inventor： Thomas Bernard ,  Harald Hain ,  Thomas Bogdahn ,  Oliver Ganz

IPC: C03B37/025

CPC classification number: C03B37/0253 ,  C03B37/01242 ,  C03B2205/63 ,  C03B2205/72

Abstract: A method for using a temperature control loop in order to further develop process control during elongation of a cylindrical preform such that a component strand with high dimensional accuracy can be drawn even in the presence of temperature-effective defects during the elongation process: (a) the continuous measurement of a first temperature value, Ttop, at an upper measuring point on the surface of the cylindrical preform; (b) the continuous measurement of a second temperature value, Tbottom, at a lower measuring point; (c) calculation of a temperature distribution in the region between the measuring points Ttop and Tbottom, and determination of a modelled deformation temperature, Tmodel, using an algorithmic model taking with first and the second temperature values as model input parameters, and the modelled deformation temperature, Tmodel, as a regulating variable and the heating-zone temperature Toven as a manipulated variable for the temperature-control loop.

Abstract translation: 一种使用温度控制回路的方法，以便在圆柱形预成型件伸长期间进一步开发工艺控制，使得即使在延伸过程中存在温度有效的缺陷的情况下，也可以拉伸具有高尺寸精度的部件股线：（a） 在圆柱形预成型件的表面上的上测量点连续测量第一温度值Ttop; （b）在较低测量点连续测量第二温度值Tbottom; （c）计算测量点Ttop和Tbottom之间的区域中的温度分布，并使用以第一和第二温度值为模型输入参数的算法模型确定模型化变形温度Tmodel，以及模拟变形 温度，Tmodel，作为调节变量，加热区温度Toven作为温度控制回路的操作变量。

公开(公告)号：US20120192594A1

公开(公告)日：2012-08-02

申请号：US13411121

申请日：2012-03-02

Applicant: Nobuaki ORITA ,  Takashi SUZUKI ,  Yoshiyuki SAKATA

Inventor： Nobuaki ORITA ,  Takashi SUZUKI ,  Yoshiyuki SAKATA

IPC: C03B37/029

CPC classification number: C03B37/029 ,  C03B37/027 ,  C03B2205/40 ,  C03B2205/42 ,  C03B2205/45 ,  C03B2205/63 ,  C03B2205/69 ,  Y02P40/57

Abstract: Drawing methods and drawing furnaces for drawing an optical fiber with small non-circularity by simple drawing system are provided. An optical fiber preform is received into a muffle tube and heated by a primary heater placed to surround the muffle tube. The optical fiber preform is heated such that a starting position of a meniscus portion is higher in its position than the top of the primary heater, wherein the meniscus portion is created at the bottom portion of the optical fiber preform.

Abstract translation: 提供了绘制方法和绘图炉，用于通过简单的绘图系统绘制具有小非圆形度的光纤。 光纤预制件被接纳到马弗管中，并通过放置在围绕马弗管的主加热器加热。 加热光纤预制件，使得弯月面部分的起始位置在其比初级加热器的顶部更高的位置，其中弯月面部分在光纤预制件的底部产生。

公开(公告)号：US06907757B2

公开(公告)日：2005-06-21

申请号：US10078269

申请日：2002-02-20

Applicant: Kazuya Kuwahara ,  Katsuya Nagayama ,  Ichiro Tsuchiya ,  Masashi Onishi

Inventor： Kazuya Kuwahara ,  Katsuya Nagayama ,  Ichiro Tsuchiya ,  Masashi Onishi

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029 ,  C03B37/07 ,  C03B37/02

CPC classification number: C03B37/029 ,  C03B2205/63 ,  Y02P40/57

Abstract: The drawing method of the present invention uses a drawing furnace comprising a furnace muffle tube, a furnace body and a heater. According to the method, an optical fiber preform is inserted from the inlet of the furnace muffle tube, the optical fiber preform is melted by means of a heater, under a specified gas atmosphere, and is drawn toward the outlet of the furnace muffle tube by means of a specified drawing tension. The optical fiber preform and the drawing furnace used in this method both satisfy the condition of below-indicated formula (1): L/D≧8  (1) wherein L indicates the length of the furnace body in the drawing direction and D indicates the diameter of the optical fiber preform. Through this method, even for the case of drawing optical fibers having a large relative index difference between the central core and the cladding, optical fibers wherein residual amounts of lattice defects are sufficiently reduced and degradation of characteristics under a hydrogen atmosphere is sufficiently suppressed can be obtained efficiently and at low cost.

Abstract translation: 本发明的拉拔方法使用包括炉马弗管，炉体和加热器的拉丝炉。 根据该方法，从炉马弗管的入口插入光纤预制棒，在特定的气体气氛下，通过加热器将光纤预制棒熔化，并通过炉管马弗管的出口向炉马弗管的出口拉出 指定图纸张力的手段。 本方法中使用的光纤预制棒和拉丝炉均满足下述式（1）的条件：<？in-line-formula description =“In-line formula”end =“lead”？> L / D > = 8（1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中L表示炉体在拉伸方向上的长度，D表示光纤的直径 预制件。 通过这种方法，即使在中心纤芯和包层之间绘制相对折射率差大的光纤的情况下，也可充分地抑制晶格缺陷残留量的充分降低，氢气氛下的特性劣化得到充分抑制的光纤， 有效地以低成本获得。

公开(公告)号：US06810692B2

公开(公告)日：2004-11-02

申请号：US10445814

申请日：2003-05-28

Applicant: Toshiki Taru ,  Katsuya Nagayama ,  Kazuya Kuwahara ,  Ichiro Tsuchiya

Inventor： Toshiki Taru ,  Katsuya Nagayama ,  Kazuya Kuwahara ,  Ichiro Tsuchiya

IPC: C03B37027

CPC classification number: C03B37/029 ,  C03B2205/63 ,  C03B2205/74 ,  C03B2205/80 ,  C03B2205/90 ,  C03B2205/92 ,  C03B2205/98

Abstract: A furnace for drawing an optical fiber provided with a muffle tube (10) and inner tubes (5,5′) connected to the upper end of the core tube, wherein a preform (1) supported by a dummy rod (2) at the upper part thereof is disposed inside the muffle tube (10) and inner tubes (5,5′) so as to be movable downward together with dummy rod (2), the preform (1) is heated and melted by a heater (11) from the outside of the muffle tube (10) and an optical fiber (1a) is pulled out from the lower end of the preform (1); the furnace is further provided with one or a plurality of sets of separating plates (4, 17) adapted to partition a space in the inner tubes (5,5′) above the preform (1) into a plurality of portions in the advance direction of the preform and disposed in the space, and with gas blowing inlets (8) disposed in the parts of wall surfaces of the inner tubes (5,5′) which are below the separating plates (4, 17) and adapted to blow an inert gas into the inner tubes (5,5′) and the muffle tube (10), thereby preventing variations in diameter of the optical fiber (1a).

Abstract translation: 一种用于拉制设置有马弗管（10）的光纤和连接到芯管的上端的内管（5,5'）的炉，其中，在所述芯管的上端由所述虚拟棒（2）支撑的预成型件（1） 其上部设置在马弗管（10）和内管（5,5'）的内部，以便与虚拟棒（2）一起向下移动，预成型件（1）由加热器（11）加热和熔化， 从马弗管（10）的外部和光纤（1a）从预成型件（1）的下端拉出; 炉还设置有一组或多组分离板（4,17），其适于将预成型件（1）上方的内管（5,5'）中的空间分隔成前进方向的多个部分 并且设置在所述空间中，并且具有设置在所述分隔板（4,17）下方的内管（5,5'）的壁表面的部分中的气体吹入口（8），并且适于吹塑 惰性气体进入内管（5,5'）和马弗管（10），从而防止光纤（1a）的直径变化。

公开(公告)号：US20040033043A1

公开(公告)日：2004-02-19

申请号：US10415688

申请日：2003-09-11

Inventor： Tanya Mary Monro ,  David John Richardson

IPC: G02B006/20 ,  C03B037/022

CPC classification number: G02B6/02338 ,  C03B37/0122 ,  C03B37/029 ,  C03B2203/14 ,  C03B2203/36 ,  C03B2203/42 ,  C03B2205/63 ,  C03B2205/72 ,  G02B6/02 ,  G02B6/02257 ,  G02B6/02271 ,  G02B6/02347 ,  G02B6/02352 ,  G02B6/02357 ,  G02B6/02366 ,  G02B6/105

Abstract: An optical fibre is provided with dispersion tuning holes (510) arranged in the wings of the modal field distribution (512). These dispersion tuning holes can be used in a holey or conventional fibre geometry to tune the fibre dispersion independently from the other modal properties, such as the mode shape, to generate birefringence and for other dispersion tuning applications. These holes contrast from the usual nullholey fibrenull holes in that they are generally carefully placed laterally offset from the geometrical axis of the optical fibre by a distance of the same order as the mode field radius. The placement and size of the proposed nulldispersion tuning holesnull ensures that they affect the dispersion of the mode in a desired manner.

Abstract translation: 光纤设置有布置在模态场分布（512）的翼中的色散调谐孔（510）。 这些色散调谐孔可以用于多孔或常规光纤几何形状，以独立于其它模态性质（例如模式形状）调节光纤色散，以产生双折射和用于其它色散调谐应用。 这些孔与通常的“多孔纤维”孔形成对比，因为它们通常小心地从光纤的几何轴线偏离距离与模场半径相同的距离。 所提出的“色散调谐孔”的位置和尺寸确保了它们以期望的方式影响模式的色散。

公开(公告)号：US06668592B1

公开(公告)日：2003-12-30

申请号：US09622827

申请日：2000-08-24

Applicant: Toshiki Taru ,  Katsuya Nagayama ,  Kazuya Kuwahara ,  Ichiro Tsuchiya

Inventor： Toshiki Taru ,  Katsuya Nagayama ,  Kazuya Kuwahara ,  Ichiro Tsuchiya

IPC: C03B37029

CPC classification number: C03B37/029 ,  C03B2205/63 ,  C03B2205/74 ,  C03B2205/80 ,  C03B2205/90 ,  C03B2205/92 ,  C03B2205/98

Abstract: A furnace for drawing an optical fiber provided with a muffle tube (10) and inner tubes (5,5′) connected to the upper end of the core tube, wherein a preform (1) supported by a dummy rod (2) at the upper part thereof is disposed inside the muffle tube (10) and inner tubes (5,5′) so as to be movable downward together with dummy rod (2), the preform (1) is heated and melted by a heater (11) from the outside of the muffle tube (10) and an optical fiber (1a) is pulled out from the lower end of the preform (1); the furnace is further provided with one or a plurality of sets of separating plates (4, 17) adapted to partition a space in the inner tubes (5, 5′) above the preform (1) into a plurality of portions in the advance direction of the preform and disposed in the space, and with gas blowing inlets (8) disposed in the parts of wall surfaces of the inner tubes (5, 5′) which are below the separating plates (4,17) and adapted to blow an inert gas into the inner tubes (5,5′) and the muffle tube (10), thereby preventing variations in diameter of the optical fiber (1a).

Abstract translation: 一种用于拉制设置有马弗管（10）的光纤和连接到芯管的上端的内管（5,5'）的炉，其中，在所述芯管的上端由所述虚拟棒（2）支撑的预成型件（1） 其上部设置在马弗管（10）和内管（5,5'）的内部，以便与虚拟棒（2）一起向下移动，预成型件（1）由加热器（11）加热和熔化， 从马弗管（10）的外部和光纤（1a）从预成型件（1）的下端拉出; 该炉还设置有一组或多组分离板（4,17），其适于将预成型件（1）上方的内管（5,5'）中的空间分隔成前进方向的多个部分 并且设置在所述空间中，并且具有设置在所述分离板（4,17）下方的内管（5,5'）的壁表面的部分中的气体吹入口（8），并且适于吹塑 惰性气体进入内管（5,5'）和马弗管（10），从而防止光纤（1a）的直径变化。

公开(公告)号：US6044663A

公开(公告)日：2000-04-04

申请号：US47865

申请日：1998-03-25

Applicant: Daniel D. Uhm ,  Robert A. Spencer

Inventor： Daniel D. Uhm ,  Robert A. Spencer

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029 ,  F27B1/14 ,  H05B3/03 ,  H05B3/62 ,  C03B13/16

CPC classification number: C03B37/029 ,  H05B3/03 ,  H05B3/62 ,  C03B2205/63 ,  C03B2205/70

Abstract: The present invention provides an improvement to a fiber optic draw furnace for drawing an optical fiber from a preform. The fiber optic draw furnace has a heating element having a shape for enclosing and heating the preform, and has a graphite liner having a corresponding shape to the shape of the heating element for providing a barrier between the heating element and the preform. In the fiber optic draw furnace, either the graphite liner is a high density extruded graphite liner that is impregnated with vitreous carbon completely through its entire graphite liner matrix, or the heating element is a high density extruded graphite heating element that is impregnated with vitreous carbon completely through its entire graphite heating element matrix, or both.

Abstract translation: 本发明提供了一种用于从预成型件拉制光纤的光纤拉制炉的改进。 光纤拉制炉具有用于封闭和加热预成型件的形状的加热元件，并且具有与加热元件的形状相对应的形状的石墨衬垫，用于在加热元件和预型件之间提供阻挡层。 在光纤拉制炉中，石墨衬垫是高密度挤压石墨衬垫，其通过其整个石墨衬垫基体完全浸透玻璃碳，或者加热元件是用玻璃碳浸渍的高密度挤压石墨加热元件 完全通过其整个石墨加热元件基体，或两者。

公开(公告)号：US4608473A

公开(公告)日：1986-08-26

申请号：US727998

申请日：1985-04-29

Applicant: Un C. Paek ,  Charles M. Schroeder, Jr.

Inventor： Un C. Paek ,  Charles M. Schroeder, Jr.

IPC: C03B37/029 ,  H05B6/02 ,  H05B6/30 ,  C03B27/02 ,  F27B14/10

CPC classification number: C03B37/029 ,  C03B2205/63 ,  C03B2205/64 ,  C03B2205/70

Abstract: A high temperature induction furnace (10) for drawing lightguide fiber (52) from a silica preform (44) has an axially located tubular zirconium dioxide susceptor (34) therein. Prior to use, at least a portion of the inside surface of the susceptor (34) is coated with a vapor deposited silica "soot" (54). The silica soot (54) is then consolidated at an elevated temperature. Surprisingly, such a technique substantially eliminates migration of zirconium dioxide particles from the susceptor (34) to the preform (44) and/or the fiber (52) without deleteriously affecting the susceptor (34) and/or the operation of the furnace (10).

Abstract translation: 用于从二氧化硅预制件（44）拉制光导纤维（52）的高温感应炉（10）在其中具有轴向定位的管状二氧化锆基座（34）。 在使用之前，基座（34）的内表面的至少一部分涂覆有气相沉积二氧化硅“烟炱”（54）。 然后将二氧化硅烟灰（54）在升高的温度下固化。 令人惊奇的是，这种技术基本上消除了二氧化锆颗粒从基座（34）到预成型件（44）和/或纤维（52）的迁移，而不会有害地影响基座（34）和/或炉子（10）的操作 ）。

公开(公告)号：US4030901A

公开(公告)日：1977-06-21

申请号：US706927

申请日：1976-07-19

Applicant: Peter Kaiser

Inventor： Peter Kaiser

IPC: C03B37/029 ,  C03B37/02

CPC classification number: C03B37/029 ,  C03B2205/63 ,  C03B2205/80 ,  C03B2205/82 ,  C03B2205/83 ,  C03B2205/90 ,  C03B2205/98 ,  Y10S277/906

Abstract: A method for drawing silica fibers utilizing an electrical resistance furnace includes the steps of heating a preform so that it begins to flow forming a fiber; pulling the fiber from the furnace; and flushing the preform and the fiber within the furnace with counteracting inert gas flows, the gas flows protecting the preform and the fiber from contamination.Apparatus used with the above-described method is also disclosed.

Abstract translation: 利用电阻炉来制造二氧化硅纤维的方法包括以下步骤：加热预成型件使其开始流动形成纤维; 从炉子拉出纤维; 并且通过抵消惰性气体流在炉内冲洗预制件和纤维，保护预制件和纤维免受污染的气体流动。

公开(公告)号：US20180251393A1

公开(公告)日：2018-09-06

申请号：US15909912

申请日：2018-03-01

Applicant: Shin-Etsu Chemical Co., Ltd.

Inventor： Tetsuya OTOSAKA

IPC: C03B37/03 ,  C03C13/04

CPC classification number: C03B37/032 ,  C03B37/02772 ,  C03B37/029 ,  C03B2205/63 ,  C03B2205/90 ,  C03C13/04 ,  Y02P40/57

Abstract: A wire-drawing optical fiber base material manufacturing method of heating an optical fiber base material by a heater and forming a drawing shape portion at an end portion. The manufacturing method includes: forming, by a flow-regulating member disposed adjacent to the heater, a gas flow such that formation, along a surface of the optical fiber base material, of a flow of a gas containing a Si compound generated from the optical fiber base material heated by the heater is inhibited; and forming, while maintaining the gas flow, the drawing shape portion by pulling part of the optical fiber base material softened by being heated by the heater.