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1. 发明授权

US06381990B1 Draw furnace sealing assembly and method 失效
标题翻译：绘图炉密封组装及方法
公开(公告)号：US06381990B1
公开(公告)日：2002-05-07
申请号：US09400155
申请日：1999-09-21
申请人： Steven Craig Ball , John Morris Barnard, Sr. , James Alan Snipes
发明人： Steven Craig Ball , John Morris Barnard, Sr. , James Alan Snipes
IPC分类号： C03B37029
CPC分类号： C03B37/02736 , C03B37/029 , C03B2205/63 , C03B2205/80 , C03B2205/96 , Y02P40/57
摘要： An apparatus and method for sealing the top of an optical waveguide draw furnace is disclosed. The apparatus includes an assembly constructed and arranged to removably cover the top of the draw furnace while mating with the downfeed handle. The apparatus includes an elongated sleeve having a base and a sealing mechanism positioned on the sleeve at a location remote from the base. The sleeve defines a chamber for receiving the downfeed handle, and the sealing mechanism is arranged with respect to the sleeve to mate with the downfeed handle received in the chamber. In one aspect of the invention, the apparatus further includes an inert gas purge for providing an inert atmosphere within the chamber. A method of sealing the top of an optical waveguide draw furnace is also disclosed.
摘要翻译：公开了一种用于密封光波导拉制炉顶部的装置和方法。该装置包括构造和布置成可拆卸地覆盖拉制炉的顶部同时与向下进给手柄配合的组件。该装置包括细长的套筒，其具有底座和位于远离基座的位置处的套筒上的密封机构。套筒限定了用于接收向下进给手柄的腔室，并且密封机构相对于套筒布置以与容纳在腔室中的向下进给手柄相配合。在本发明的一个方面，所述设备还包括用于在所述室内提供惰性气氛的惰性气体吹扫。还公开了一种密封光波导拉制炉顶部的方法。

2. 发明授权

US06668592B1 Optical fiber drawing furnace having adjustable partitions 有权
标题翻译：光纤拉丝炉具有可调隔板
公开(公告)号：US06668592B1
公开(公告)日：2003-12-30
申请号：US09622827
申请日：2000-08-24
申请人： Toshiki Taru , Katsuya Nagayama , Kazuya Kuwahara , Ichiro Tsuchiya
发明人： Toshiki Taru , Katsuya Nagayama , Kazuya Kuwahara , Ichiro Tsuchiya
IPC分类号： C03B37029
CPC分类号： C03B37/029 , C03B2205/63 , C03B2205/74 , C03B2205/80 , C03B2205/90 , C03B2205/92 , C03B2205/98
摘要： 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).
摘要翻译：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。

3. 发明授权

US06546760B1 Optical fiber drawing furnace with a zig zag heating element 失效
标题翻译：光纤拉丝炉采用锯齿形加热元件
公开(公告)号：US06546760B1
公开(公告)日：2003-04-15
申请号：US08674865
申请日：1996-07-03
申请人： Ichiro Tsuchiya , Kohei Kobayashi , Hiroaki Ohta , Kazuya Kuwahara , Katsuyuki Tsuneishi , Hideo Miyaki , Yasuo Matsuda
发明人： Ichiro Tsuchiya , Kohei Kobayashi , Hiroaki Ohta , Kazuya Kuwahara , Katsuyuki Tsuneishi , Hideo Miyaki , Yasuo Matsuda
IPC分类号： C03B37029
CPC分类号： C03B37/029 , C03B2205/63 , H05B3/145 , H05B3/44
摘要： There is provided an optical fiber drawing furnace capable of drawing an optical fiber having small non circularity, which drawing furnace includes a muffle tube, in which an optical fiber preform is supplied, a heater surrounding the muffle tube, a plurality of electrode connecting portion extending from the heater, a plurality of electrodes connected to electrode connecting portions, and in conjunction therewith to an electric power source, and unifying means for unifying the temperature distribution along the circumferential direction.
摘要翻译：提供了一种能够拉伸小圆形光纤的光纤拉丝炉，该拉丝炉包括一个马弗管，其中提供了一个光纤预制棒，一个围绕马弗管的加热器，多个电极连接部分延伸从加热器，连接到电极连接部分的多个电极，以及与电源连接的多个电极，以及用于统一沿着周向的温度分布的统一装置。

4. 发明授权

US06519977B2 Optical fiber preform suspending and supporting apparatus and optical fiber preform processing apparatus 有权
标题翻译：光纤预制件悬挂支撑装置和光纤预制棒加工装置
公开(公告)号：US06519977B2
公开(公告)日：2003-02-18
申请号：US09810507
申请日：2001-03-19
申请人： Toshihiro Mikami , Yukio Kohmura
发明人： Toshihiro Mikami , Yukio Kohmura
IPC分类号： C03B37029
CPC分类号： C03B37/01486
摘要： An optical fiber preform suspending and supporting apparatus able to prevent deformation of a pin placed in a high temperature environment and able to support a porous optical fiber preform without adversely influencing supports of the pin and without causing inclination relative to the vertical line of a main shaft, wherein a movable connector is fitted into an enlarged-diameter portion of the lower end of a main shaft, this enlarged-diameter portion is connected with the movable connector by a pin so that the movable connector is able to swing around the pin, a holding portion including a supporting portion is formed integrally at the bottom of the movable connector to hold an enlarged-diameter portion of the upper end of a starting preform, and the diameter of the pin is in the range of 20% to 50% of the outside diameter of the enlarged-diameter portion of the lower end of the main shaft, and an optical fiber processing apparatus including the same.
摘要翻译：一种光纤预制件悬挂和支撑装置，其能够防止放置在高温环境中的销的变形，并且能够支撑多孔光纤预制件而不会不利地影响销的支撑并且不会相对于主轴的垂直线引起倾斜其特征在于，可动连接器嵌入主轴的下端部的扩径部，该扩径部通过销与活动连接器连接，能够使活动连接器能够在销周围摆动，包括支撑部的保持部一体地形成在可动连接器的底部，以保持起始预制件的上端的扩径部分，并且销的直径在该直径部分的20％至50％的范围内主轴下端的扩径部的外径和包括该主轴的下端的光纤加工装置。

5. 发明授权

US06543256B1 Optical fiber coupler making apparatus made from zirconia and method 失效
标题翻译：由氧化锆制成的光纤耦合器制造装置及方法
公开(公告)号：US06543256B1
公开(公告)日：2003-04-08
申请号：US09590166
申请日：2000-06-09
申请人： Toshiki Taru , Ichiro Tsuchiya
发明人： Toshiki Taru , Ichiro Tsuchiya
IPC分类号： C03B37029
CPC分类号： C03B37/15 , G02B6/2835 , G02B6/2856 , Y02P40/57
摘要： In an optical fiber coupler making apparatus which makes an optical fiber coupler by thermally fusing a plurality of optical fibers together by use of a heater and then elongating thus thermally fused part, the heater comprises a heating element which is made of zirconia and which has a slit for containing the optical fibers. The inner face of the heating element is preferentially heated due to a characteristic of its material. Consequently, if optical fibers are contained in the fiber receiving slit, then they can be thermally fused at a sufficiently high temperature in a short period of time, whereby reducing mingling of impurities into the optical fiber coupler. Therefore, the heating element made of zirconia is effective as means for preventing impurities from mingling from the outside thereof. Also, performances of the heating element can be maintained over a long period of time even if the optical fibers are thermally fused at a high temperature. Further, the evaporation of impurities, which may adversely affect characteristics of the optical fiber coupler, hardly occurs from the heating element.
摘要翻译：在通过使用加热器将多根光纤热熔合在一起并随后拉伸这样的热熔融部分而制造光纤耦合器的光纤耦合器制造装置中，加热器包括由氧化锆制成的加热元件，用于容纳光纤的狭缝。由于其材料的特性，加热元件的内表面被优先加热。因此，如果在光纤接收狭缝中包含光纤，则可以在短时间内以足够高的温度热熔融，从而减少杂质混入光纤耦合器中。因此，由氧化锆制成的加热元件作为防止杂质从其外部混合的手段是有效的。此外，即使光纤在高温下热熔融，也可以长时间保持加热元件的性能。此外，可能不利地影响光纤耦合器的特性的杂质的蒸发几乎不会从加热元件发生。

6. 发明授权

US06354113B2 Fiber optic draw furnace featuring a fiber optic preform heating and fiber drawing programmable logic controller 有权
标题翻译：光纤拉丝炉具有光纤预制件加热和光纤绘制可编程逻辑控制器
公开(公告)号：US06354113B2
公开(公告)日：2002-03-12
申请号：US09233816
申请日：1999-01-20
申请人： Daniel D. Uhm
发明人： Daniel D. Uhm
IPC分类号： C03B37029
CPC分类号： C03B37/0253 , C03B2205/40 , C03B2205/72
摘要： The present invention provides a fiber optic draw furnace having a fiber optic heating and draw control system that controls the heating of a fiber optic preform which is partially melted by a furnace and the drawing of an optical fiber from the fiber optic preform by a fiber drawing device. The fiber optic heating and draw control system features a fiber optic heating and drawing device controller that responds to a furnace power consumption control signal from a fiber optic preform heating device in the furnace, for providing a furnace heating control signal to the fiber optic preform heating device in the furnace and a fiber tension draw control signal to the fiber drawing device to maintain a desired fiber draw tension on the optical fiber. In one embodiment, the fiber optic heating and drawing device controller is a programmable logic controller. One advantage of the present invention is that it eliminates the need for an optical pyrometer port, which results in a symmetrical temperature profile around the circumference of the preform and also helps eliminate induced stresses that can cause defects in an optical fiber.
摘要翻译：本发明提供了一种光纤拉制炉，其具有光纤加热和拉制控制系统，该系统控制由炉子部分熔化的光纤预制件的加热，以及通过光纤拉丝从光纤预制件拉制光纤设备。光纤加热和绘图控制系统具有光纤加热和绘图装置控制器，其响应来自炉中的光纤预制件加热装置的炉子功率消耗控制信号，用于向光纤预制件加热提供炉加热控制信号炉中的装置和纤维拉伸控制信号到纤维拉伸装置以保持光纤上所需的纤维拉伸张力。在一个实施例中，光纤加热和拉制装置控制器是可编程逻辑控制器。本发明的一个优点是它消除了对光学高温计端口的需要，这导致围绕预成型件的圆周的对称的温度曲线，并且还有助于消除可能导致光纤中的缺陷的引起的应力。

7. 发明授权

US06314767B2 Apparatus for manufacturing an optical fiber preform and including a ring for trapping and diffusing light radiation 失效
标题翻译：用于制造光纤预制件并且包括用于捕获和漫射光辐射的环的装置
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。

8. 发明授权

US06257023B1 Fiber optic draw furnace having a heating element and a furnace shell, featuring rigidified high purity graphite felt insulation therebetween 失效
标题翻译：具有加热元件和炉壳的光纤拉制炉，其间具有硬化的高纯度石墨毡
公开(公告)号：US06257023B1
公开(公告)日：2001-07-10
申请号：US09047864
申请日：1998-03-25
申请人： Daniel D. Uhm , Robert A. Spencer
发明人： Daniel D. Uhm , Robert A. Spencer
IPC分类号： C03B37029
CPC分类号： C03B37/029 , C03B2205/63 , C03B2205/70 , H05B3/03 , H05B3/62
摘要： The present invention provides an improvement to a fiber optic draw furnace having a heating element (22) arranged inside a furnace shell (20) for drawing an optical fiber (F) from a preform (P). The fiber optic draw furnace (10) has one or more pieces of fiber draw furnace insulation (14, 16, 18) to separate the heating element (22) from the furnace shell (20) for reducing the thermal transfer therebetween. At least one of the pieces of fiber draw furnace insulation (14, 16, 18) is made from rigidified high purity graphite felt that provides highly efficient thermal insulation between the heating element (22) and the outer furnace shell (20). The rigidified high purity graphite felt insulation (14), (16, 18) includes either a bottom insulation ring (14), a cylindrical insulation insert (16) or a cylindrical insulation canister (18).
摘要翻译：本发明提供一种具有设置在炉壳（20）内的用于从预成型件（P）拉出光纤（F）的加热元件（22）的光纤拉制炉的改进。光纤拉制炉（10）具有一个或多个纤维拉制炉绝缘体（14,16,18），以将加热元件（22）与炉壳（20）分开，以减少它们之间的热传递。纤维拉制炉绝缘体（14,16,18）中的至少一个由刚性高纯度石墨毡制成，其在加热元件（22）和外炉壳（20）之间提供高效的热绝缘。刚性化的高纯度石墨毡绝缘体（14）（16,18）包括底部绝缘环（14），圆柱形绝缘插入件（16）或圆柱形绝缘罐（18）。

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