Process for drawing glass fiber using prediction of future geometric
parameter of the fiber
    11.
    发明授权
    Process for drawing glass fiber using prediction of future geometric parameter of the fiber 失效
    使用预测光纤的未来几何参数绘制玻璃纤维的工艺

    公开(公告)号:US6098428A

    公开(公告)日:2000-08-08

    申请号:US723770

    申请日:1996-09-30

    摘要: A glass blank is sent to a heating zone where it is softened region by region and drawn continuously in a controlled manner as a drawing bulb is formed. Estimates of at least one controlled variable are predicted free of dead time; in addition, at least one geometric variable of the component which can be correlated with the controlled variable is measured continuously, and the measurement values thus obtained are used to adjust the predicted estimates. On the basis of the predicted estimates thus adjusted, the nominal-actual deviation of the controlled variable is determined and converted to a change in a controlling variable. To ensure the production of a component with especially high dimensional accuracy, a geometric variable is measured at a first measurement site in the area of the drawing bulb for the prediction of the estimate, and the temperature of the drawing bulb be measured and used as a controlled variable. A measuring device to which a measurement site in the softened area of the blank is assigned is preferably provided to detect the geometric variable of the component.

    摘要翻译: 将玻璃坯料送入加热区域,在该加热区域逐渐软化,随着形成拉丝灯泡,以受控的方式连续地拉伸。 预测至少一个受控变量的预计没有死时间; 此外,连续地测量可与受控变量相关联的分量的至少一个几何变量,并且使用如此获得的测量值来调整预测的估计。 根据这样调整的预测估计值,确定控制变量的名义实际偏差,并将其转换为控制变量。 为了确保具有特别高的尺寸精度的部件的生产,在绘图灯泡的区域中的第一测量位置处测量几何变量以用于预测估计,并且测量绘制灯泡的温度并将其用作 控制变量。 优选地,设置分配了坯料的软化区域中的测量部位的测量装置,以检测部件的几何变量。

    Optical fiber preform and method of manufacturing optical fiber

    公开(公告)号:US09856164B2

    公开(公告)日:2018-01-02

    申请号:US15631442

    申请日:2017-06-23

    IPC分类号: G02B6/02 C03B37/012

    摘要: An optical fiber preform includes: a columnar portion having an approximately constant radius of r; and a taper portion located adjacent to the columnar portion in a lengthwise direction and having a radius decreasing along the lengthwise direction. The taper portion includes: a first taper portion including a portion having a radius varying between 0.9r and 0.6r; and a second taper portion including a portion having a radius varying between 0.4r and 0.15r. A diameter of the first taper portion in the portion having the radius varying between 0.9r and 0.6r decreases so as to form a maximum angle θ1 between 40 degrees and 60 degrees with respect to the columnar portion, a diameter of the second taper portion in the portion having the radius varying between 0.4r and 0.15r decreases so as to form an average angle θ2 between 5 degrees and 30 degrees with respect to a central axis in the lengthwise direction, and a volume of the taper portion is smaller than or equal to 45% of a volume of a column having a same outer diameter as a maximum outer diameter of the taper portion and having a same length as the taper portion.

    Optical fiber preform and method of manufacturing optical fiber using optical fiber preform
    13.
    发明授权
    Optical fiber preform and method of manufacturing optical fiber using optical fiber preform 有权
    光纤预制棒和使用光纤预制棒制造光纤的方法

    公开(公告)号:US09321670B2

    公开(公告)日:2016-04-26

    申请号:US13669682

    申请日:2012-11-06

    申请人: FUJIKURA LTD.

    发明人: Kenji Okada

    IPC分类号: C03B37/027 C03B37/012

    摘要: An optical fiber preform that is used in a method in which a core rod that forms a core is inserted into a quartz tube that forms a cladding, and at the same time as they are fiber-drawn, the quartz tube and the core rod are formed into a single body, includes: a tapered portion that is formed by grinding an outer circumferential portion of a distal end portion of the quartz tube into a tapered shape; and a conical portion that is formed by welding a dummy tube that has substantially the same outer diameter as the outer diameter of a distal end portion of the tapered portion to the distal end portion of the tapered portion, and by applying heat to the dummy tube and stretching out the dummy tube, where the core rod is inserted inside the quartz tube.

    摘要翻译: 用于将形成芯的芯棒插入形成包层的石英管中的方法中使用的光纤预制棒,并且在被纤维拉伸的同时,石英管和芯棒是 形成为单体,包括:通过将石英管的前端部的外周部研磨为锥形而形成的锥形部, 以及圆锥形部分,其通过将具有与锥形部分的远端部分的外径基本相同的外径的虚拟管焊接到锥形部分的远端部分并且通过将热量施加到虚拟管 并将芯棒插入石英管内部延伸出虚拟管。

    OPTICAL FIBER PREFORM AND METHOD OF MANUFACTURING OPTICAL FIBER USING OPTICAL FIBER PREFORM
    14.
    发明申请
    OPTICAL FIBER PREFORM AND METHOD OF MANUFACTURING OPTICAL FIBER USING OPTICAL FIBER PREFORM 有权
    光纤纤维预制件和使用光纤预制件制造光纤的方法

    公开(公告)号:US20130061637A1

    公开(公告)日:2013-03-14

    申请号:US13669682

    申请日:2012-11-06

    申请人: Fujikura Ltd.

    发明人: Kenji OKADA

    IPC分类号: C03B37/027

    摘要: An optical fiber preform that is used in a method in which a core rod that forms a core is inserted into a quartz tube that forms a cladding, and at the same time as they are fiber-drawn, the quartz tube and the core rod are formed into a single body, includes: a tapered portion that is formed by grinding an outer circumferential portion of a distal end portion of the quartz tube into a tapered shape; and a conical portion that is formed by welding a dummy tube that has substantially the same outer diameter as the outer diameter of a distal end portion of the tapered portion to the distal end portion of the tapered portion, and by applying heat to the dummy tube and stretching out the dummy tube, where the core rod is inserted inside the quartz tube.

    摘要翻译: 用于将形成芯的芯棒插入形成包层的石英管中的方法中使用的光纤预制棒,并且在被纤维拉伸的同时,石英管和芯棒是 形成为单体,包括:通过将石英管的前端部的外周部研磨为锥形而形成的锥形部, 以及圆锥形部分,其通过将具有与锥形部分的远端部分的外径基本相同的外径的虚拟管焊接到锥形部分的远端部分并且通过将热量施加到虚拟管 并将芯棒插入石英管内部延伸出虚拟管。

    OPTICAL FIBER DRAWING METHODS AND DRAWING FURNACES
    15.
    发明申请
    OPTICAL FIBER DRAWING METHODS AND DRAWING FURNACES 审中-公开
    光纤绘图方法和绘图法

    公开(公告)号:US20120192594A1

    公开(公告)日:2012-08-02

    申请号:US13411121

    申请日:2012-03-02

    IPC分类号: C03B37/029

    摘要: 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.

    摘要翻译: 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。

    Method for optical fibre manufacture
    19.
    发明授权
    Method for optical fibre manufacture 失效
    光纤制造方法

    公开(公告)号:US4801324A

    公开(公告)日:1989-01-31

    申请号:US161331

    申请日:1988-02-19

    申请人: Fred Hyland

    发明人: Fred Hyland

    IPC分类号: C03B37/025 C03B37/027

    摘要: In the manufacture of high quality optical fibre for telecommunications, a preform (1) is advanced towards a furnace (9) until a tip detector (5) automatically stops the preform (1) at a predetermined position (11) in front of the furnace to provide a reference datum for a second mode of operation in which the computer (12) can be initiated manually (12B) to advance (4) the preform (1) by a predetermined amount into the furnace to commence drawing the optical fibre. Preferably the tip detector is a paddle (6) pivotally mounted (7) and operates an optical sensor (8).

    摘要翻译: 在用于电信的高品质光纤的制造中,预成型件(1)朝向炉(9)前进,直到尖端检测器(5)在炉前面的预定位置(11)处自动停止预成型件(1) 以提供第二操作模式的参考数据,其中可以手动启动计算机(12B)以将预成型件(1)预定量推进(4)预定量到炉中以开始拉伸光纤。 优选地,尖端检测器是枢转地安装(7)并操作光学传感器(8)的桨(6)。