公开(公告)号：US07814767B2

公开(公告)日：2010-10-19

申请号：US09986622

申请日：2001-11-09

申请人： Giacomo Stefano Roba ,  Massimo Nutini ,  Franco Veronelli

发明人： Giacomo Stefano Roba ,  Massimo Nutini ,  Franco Veronelli

IPC分类号： C03B37/023 ,  C03B37/07

CPC分类号： H05B6/20 ,  C03B37/0124 ,  C03B37/029 ,  C03B2205/64 ,  C03B2205/70 ,  C03B2205/80 ,  C03B2205/81 ,  C03B2205/82 ,  C03B2205/92 ,  C03B2205/96 ,  C03B2205/98 ,  Y02P40/57

摘要： An induction furnace capable of drawing large diameter preforms of up to 130 mm is described. The induction furnace has top and bottom chimneys surrounding the entire preform during operation of the furnace with an inert conditioning gas which is introduced into the top chimney and flows downward through the furnace body and bottom chimney without significant turbulence. A distributor ring inside the top chimney redirects flow from a circumferential direction to a downward direction. The top chimney also includes a resilient seal to releasably hold the top of the preform. The bottom chimney has a smoothly decreasing cross-sectional area preventing turbulence at the furnace exit. The furnace insulation is preferably a rigid self-supporting graphite cylinder. A method of drawing large diameter preforms either to an optical fiber or to a preform of smaller diameter using such a furnace is also described.

摘要翻译： 描述了能够拉伸高达130mm的大直径预制件的感应炉。 感应炉在炉子运行期间具有围绕整个预制件的顶部和底部烟囱，其中惰性调节气体被引入到顶部烟囱中并且向下流过炉体和底部烟囱而没有显着的湍流。 顶部烟囱内的分配器环将流动从圆周方向重新定向到向下的方向。 顶部烟囱还包括弹性密封件以可释放地保持预制件的顶部。 底部烟囱具有平滑减小的横截面积，防止炉出口处的湍流。 炉绝缘体优选为刚性自支撑石墨圆筒。 还描述了使用这种炉将大直径预成型件拉到光纤或更小直径的预成型件的方法。

公开(公告)号：US4407666A

公开(公告)日：1983-10-04

申请号：US298059

申请日：1981-08-31

申请人： Alfred D. Briere

发明人： Alfred D. Briere

IPC分类号： C03B37/029 ,  C03B37/07 ,  C03B37/01

CPC分类号： C03B37/029 ,  C03B2205/63 ,  C03B2205/81 ,  C03B2205/83

摘要： An optical fiber drawing furnace includes a graphite element of generally cylindrical shape with a reduced central cross-sectional configuration having a flange at opposite ends thereof and having an axial hole therethrough including a central internal element chamber for receiving a glass preform, means for water cooling the flanges, and means for applying electric power across the flanges to resistively heat the reduced cross-sectional configuration and, hence, the central internal element chamber so that an optical fiber can be drawn from the preform. The invention relates to prolonging the useful life of the graphite element by suitable methods and apparatus. The water used for cooling the flanges can be regulated to a temperature such as to avoid condensation of atmospheric moisture within the room (in which the furnace is located) upon the furnace. The application of electric power across the flanges can be increased and decreased at a gradual rate so as to avoid thermal shock to the graphite element.

摘要翻译： 一种光纤拉丝炉包括大致圆柱形的石墨元件，中心横截面形状减小，在相对两端具有凸缘，并具有一个轴向孔，其中包括一个用于容纳玻璃预制件的中心内部元件室，用于水冷的装置 凸缘和用于跨过凸缘施加电力的装置，以电阻地加热所述减小的横截面构型，并因此中心内部元件室，以使得光纤能够从所述预制件中拉出。 本发明涉及通过合适的方法和装置延长石墨元件的使用寿命。 用于冷却凸缘的水可以被调节到一个温度，以避免在炉子之间的房间（炉子位于其中）处的大气湿气冷凝。 跨越法兰的电力的施加可以逐渐增加和减少，以避免对石墨元件的热冲击。

公开(公告)号：US08631669B2

公开(公告)日：2014-01-21

申请号：US13090693

申请日：2011-04-20

申请人： Kenji Okada

发明人： Kenji Okada

IPC分类号： C03B37/029

CPC分类号： C03B37/029 ,  C03B37/02736 ,  C03B2205/80 ,  C03B2205/81

摘要： An optical fiber manufacturing apparatus including: a heating furnace in which an optical fiber is formed by melt-drawing an optical fiber preform; a sealing mechanism which is provided on an opening portion located at an upstream of the heating furnace and seals the heating furnace with an inert gas; a first pipe which is connected to the heating furnace and introduces the gas into the heating furnace; a second pipe which is connected to a lowermost compartment closest to the heating furnace among the compartments and introduces the gas into the lowermost compartment; and a gas flow rate control unit which controls a total sum of a flow rate of a gas supplied from the first pipe into the heating furnace and a flow rate of a gas supplied from the second pipe into the lowermost compartment to be substantially constant.

摘要翻译： 一种光纤制造装置，包括：加热炉，其中通过熔融拉伸光纤预制棒形成光纤; 密封机构，设置在位于加热炉的上游侧的开口部，用惰性气体密封加热炉; 第一管，其连接到加热炉并将气体引入加热炉; 第二管，其连接到隔室中最靠近加热炉的最下室，并将气体引入最下室; 以及气体流量控制单元，其控制从第一管供给到加热炉中的气体的流量与从第二管供给到最下室的气体的流量的总和大致恒定。

公开(公告)号：US06474109B1

公开(公告)日：2002-11-05

申请号：US09712040

申请日：2000-11-13

申请人： Marinus Jacob deFouw ,  Antonius Henricus Elisabeth Breuls

发明人： Marinus Jacob deFouw ,  Antonius Henricus Elisabeth Breuls

IPC分类号： C03B37025

CPC分类号： C03B37/029 ,  C03B2205/81 ,  C03B2205/92

摘要： The invention relates to a device for drawing optical fibers from a preform, comprising: a furnace comprising a tube for heating one end of said preform to the drawing temperature thereof, which tube comprises: i) a central tube, ii) an upper extension tube connected to the lower part of said central tube so as to obtain a gas tight seal against an ambient atmosphere exterior said furnace, wherein the upper extension tube comprises an inlet for an inert gas in the top region of the upper extension tube, as a result of which the preform and the fiber to be drawn therefrom are surrounded by an inert gas, iii) a lower extension tube connected to said upper extension tube in such a manner that a gas tight seal against an ambient atmosphere exterior said furnace is obtained, iv) a tube outlet connected to said lower extension tube, means for drawing the fiber, means for supporting the preform in the furnace.

摘要翻译： 本发明涉及一种用于从预成型件拉制光纤的装置，包括：炉，其包括用于将所述预成型坯的一端加热到其拉伸温度的管，该管包括：i）中心管，ii）上延伸管 连接到所述中心管的下部，以便获得与所述炉外部的环境气氛的气密密封，其中上延伸管包括在上延伸管的顶部区域中的惰性气体入口，结果 其中预制件和待拉出的纤维由惰性气体包围，iii）连接到所述上延伸管的下延伸管，以便获得在所述炉外面的环境气氛的气密密封，iv ）连接到所述下延伸管的管出口，用于拉伸纤维的装置，用于将预成型件支撑在炉中的装置。

公开(公告)号：US20020078714A1

公开(公告)日：2002-06-27

申请号：US10017767

申请日：2001-12-13

发明人： Lindwood A. Bird ,  James H. Faler ,  Dale R. Powers ,  Bruce W. Reding ,  Manivannan Ravichandran

IPC分类号： C03B037/018

CPC分类号： C03B37/01406 ,  C03B37/0142 ,  C03B37/0146 ,  C03B37/0253 ,  C03B37/027 ,  C03B37/02736 ,  C03B37/029 ,  C03B2205/30 ,  C03B2205/40 ,  C03B2205/44 ,  C03B2205/63 ,  C03B2205/80 ,  C03B2205/81 ,  C03B2207/50 ,  C03B2207/52 ,  C03B2207/62 ,  C03B2207/66 ,  C03B2207/70 ,  Y02P40/57

摘要： A method an apparatus for continuously producing optical waveguide fiber and preforms. A continuous supply of core cane is provided to a walled deposition chamber upon which glass soot is deposited to form a soot preform. The preform is passed through an aligned drying, consolidation and draw chambers from which an optical fiber may be drawn. In one embodiment, a plurality of burners are positioned at different radial distances from a longitudinal axis of the cane in the deposition chamber. One or more environmental seal(s) are provided to prevent process gasses or contaminants from flowing into or between the chambers.

摘要翻译： 一种用于连续生产光波导纤维和预制件的设备的方法。 将核心甘蔗的连续供应提供给壁沉积室，在其上沉积玻璃烟炱以形成烟炱预制件。 将预成型件通过对准的干燥，固结和拉伸室，可从中拉出光纤。 在一个实施例中，多个燃烧器定位在与沉积室中的拐杖的纵向轴线不同的径向距离处。 提供一个或多个环境密封件以防止过程气体或污染物流入室中或室之间。

公开(公告)号：US06192715B1

公开(公告)日：2001-02-27

申请号：US09245340

申请日：1999-02-05

申请人： Nobuaki Orita ,  Tetsuya Kumada ,  Yoshiyuki Sakata ,  Hisashi Koaizawa

发明人： Nobuaki Orita ,  Tetsuya Kumada ,  Yoshiyuki Sakata ,  Hisashi Koaizawa

IPC分类号： C03B3707

CPC分类号： C03B37/029 ,  C03B2205/63 ,  C03B2205/81 ,  C03B2205/83 ,  Y02P40/57

摘要： An optical fiber drawing furnace capable of the prevention of entry of an ambient gas into an inner space thereof both effectively and economically, provided with a lower gas introduction portion through which inert gas is introduced into the inner space of the optical fiber drawing furnace, a chamber separated by a lower partition, and a bottom cover. The lower partition is arranged immediately below the lower gas introduction portion and has a first hole through which the chamber and the inner space are communicated. The bottom cover has a second hole through which the chamber and the atmosphere are communicated. An optical fiber is passed through the first and second holes. A controller detects a differential pressure between a pressure P1 in the inner space and a pressure P2 in the chamber and controls the suction flow by a pump for evacuating the gas in the chamber to maintain P1>P2. The sizes of the first and second holes are defined as (L1/D1)

摘要翻译： 一种能够有效地和经济地防止环境气体进入其内部空间的光纤拉丝炉，其具有将惰性气体引入到光纤拉制炉的内部空间中的下部气体导入部， 室由下隔板分隔开，底盖。 下部分隔部布置在下部气体导入部的正下方，具有第一孔，室与内部空间连通。 底盖具有第二孔，室和大气通过该孔连通。 光纤通过第一和第二孔。 控制器检测内部空间中的压力P1和室内的压力P2之间的压差，并且通过用于排出腔室中的气体的泵来控制吸入流以保持P1> P2。 第一和第二孔的尺寸被定义为（L1 / D1）<（L2 / D2），其中L1和L2是孔的长度，D1和D2是孔的直径。

公开(公告)号：US5974838A

公开(公告)日：1999-11-02

申请号：US111234

申请日：1998-07-07

申请人： Daniel D. Uhm ,  Robert A. Spencer

发明人： Daniel D. Uhm ,  Robert A. Spencer

IPC分类号： C03B37/025 ,  C03B37/027 ,  C03B37/029 ,  C03B37/07

CPC分类号： C03B37/02736 ,  C03B37/0253 ,  C03B37/029 ,  C03B2205/80 ,  C03B2205/81 ,  C03B2205/82 ,  C03B2205/83

摘要： An optical fiber furnace having an access port for a preform is disclosed. The access port includes a gas pressure generation and sensing device and an automatic shutter door assembly. The gas pressure generation and sensing device responds to a sensed gas pressure built up around a new preform being inserted into the optical fiber furnace, for providing an automatic shutter door opening signal. The gas pressure generation and sensing device also responds to a sensed outwardly flowing purge gas pressure escaping around an exhausted preform being removed from the optical fiber furnace, for providing an automatic shutter door closing signal. The automatic shutter door assembly responds to the automatic shutter door opening signal, for opening the automatic shutter door assembly for inserting the new preform into the optical fiber furnace. The automatic shutter door assembly also responds to the automatic shutter door closing signal, for closing the automatic shutter door assembly after removing the exhausted preform from the optical fiber furnace.

摘要翻译： 公开了一种具有用于预制件的入口的光纤炉。 进入端口包括气体压力产生和感测装置和自动快门门组件。 气体压力产生和感测装置响应于被插入到光纤炉中的新预型件周围形成的感测气体压力，以提供自动快门开门信号。 气体压力产生和感测装置还响应于从光纤炉除去的排出的预制件周围逃逸的感测向外流动的净化气体压力，以提供自动快门门关闭信号。 自动快门门组件响应于自动快门门打开信号，用于打开自动快门门组件以将新预成型件插入光纤炉中。 自动快门门组件还响应于自动快门门关闭信号，用于在从光纤炉中去除耗尽的预成型件之后关闭自动快门门组件。

公开(公告)号：US09751796B2

公开(公告)日：2017-09-05

申请号：US15080467

申请日：2016-03-24

申请人： Shin-Etsu Chemical Co., Ltd.

发明人： Kazuya Uchida ,  Tetsuya Otosaka

IPC分类号： C03B37/012 ,  C03B19/06 ,  C03B37/014

CPC分类号： C03B37/0146 ,  C03B2205/81

摘要： A sintering apparatus for sintering a porous glass base material, including a furnace core tube surrounded by heaters, the furnace core tube housing the porous glass base material; a lid member having an insertion hole through which a holding rod coupled with the porous glass base material is inserted, the lid member mounted at one end of the furnace core tube; a sealing chamber having a supply port that introduces seal gas and a discharging port that discharges the seal gas, the sealing chamber provided at the lid member covering the insertion hole; and a cylindrical member that causes a pressure difference between gas inside of the tube of an inside the furnace core tube and gas inside of the sealing chamber to be generated while the holding rod is inserted through the cylindrical member inside of the sealing chamber.

公开(公告)号：US20090038345A1

公开(公告)日：2009-02-12

申请号：US12189440

申请日：2008-08-11

申请人： Tetsuya OTOSAKA ,  Yoshiaki SHIMIZU

发明人： Tetsuya OTOSAKA ,  Yoshiaki SHIMIZU

IPC分类号： C03B37/085 ,  C03B37/029

CPC分类号： C03B37/029 ,  C03B2205/10 ,  C03B2205/81

摘要： In an apparatus for fabricating an optical fiber, the apparatus includes a drawing furnace provided with an insertion opening for receiving an optical fiber perform, a feed mechanism configured to support one end of the optical fiber preform so as to feed into the drawing furnace, a first sealing unit configured to seal a clearance gap between the optical fiber preform and the insertion opening, and a second sealing unit configured to seal a gap between the optical fiber preform and the first sealing unit when a tapered portion formed at the one end side of the optical fiber preform passes through the insertion opening. As a result, the available entirety of the optical fiber preform can be changed to an optical fiber, so that the cost for fabricating the optical fiber can be significantly reduced.

摘要翻译： 在一种制造光纤的装置中，该装置包括设置有用于接收光纤执行的插入口的拉丝炉，配置成将光纤预制件的一端支撑以供入拉丝炉的进给机构， 第一密封单元，其构造成密封光纤预制件和插入开口之间的间隙;以及第二密封单元，其构造成当形成在所述光纤预制件的一端侧的锥形部分时，密封所述光纤预制件和所述第一密封单元之间的间隙 光纤预制棒穿过插入口。 结果，光纤预制棒的可用整体可以改变为光纤，从而可以显着地减少制造光纤的成本。

公开(公告)号：US06945079B2

公开(公告)日：2005-09-20

申请号：US10619786

申请日：2003-07-15

申请人： Sung-Koog Oh ,  Jin-Han Kim

发明人： Sung-Koog Oh ,  Jin-Han Kim

IPC分类号： G02B6/00 ,  C03B37/027 ,  C03B37/029 ,  C03B37/12 ,  G02B6/02 ,  C03B37/07

CPC分类号： C03B37/029 ,  C03B37/02718 ,  C03B2203/06 ,  C03B2203/36 ,  C03B2205/81 ,  C03B2205/83 ,  C03B2205/98

摘要： Disclosed is a system for drawing an optical fiber for controlling polarization mode dispersion. A furnace is provided for uniformly heating an optical fiber preform in the drawing system mounted to an optical fiber draw tower. The furnace comprises: (a) a main body; (b) a sub-body placed coaxially with the main body and having a diameter smaller than that of the main body; and (c) an upper gas feeding section over the main body, wherein the upper gas feeding section includes a first hollow rotary body having at least one slit in the inner surface thereof along the longitudinal direction of an optical fiber and at least one opening extended in the direction of the center, whereby a gas artificially/periodically creates non-contact polarization to the optical fiber by the first hollow rotary body. Effective non-contact control can be carried out about polarization mode dispersion of the optical fiber.

摘要翻译： 公开了一种用于绘制用于控制偏振模色散的光纤的系统。 提供了一种用于在安装到光纤拉制塔的绘图系统中均匀加热光纤预制件的炉子。 该炉包括：（a）主体; （b）与主体同轴放置且直径小于主体的直径的子体; 以及（c）主体上方的上部供气部，其中，所述上部气体供给部包括第一中空旋转体，所述第一中空旋转体在其内表面中沿着光纤的长度方向具有至少一个狭缝，并且至少一个开口延伸 在中心的方向上，由此人造/周期性地通过第一中空旋转体向光纤产生非接触极化。 关于光纤的偏振模色散可以进行有效的非接触控制。