Drawing method for bare optical fiber with suppressed hydrogen diffusion
    1.
    发明授权
    Drawing method for bare optical fiber with suppressed hydrogen diffusion 有权
    具有抑制氢扩散的裸光纤的拉制方法

    公开(公告)号:US07658086B2

    公开(公告)日:2010-02-09

    申请号:US11433576

    申请日:2006-05-15

    IPC分类号: C03B37/023

    摘要: A drawing method for a bare optical fiber, comprises the steps of: melting an optical fiber preform using a heating device and drawing the bare optical fiber; and naturally cooling down the bare optical fiber or forcibly cooling down the bare optical fiber by a cooling device after the heating and melting step, wherein a temperature history during the drawing the optical fiber preform to obtain the bare optical fiber in the heating device satisfies a relational expression: T≦−0.01X+12 where a time period when the heated and molten portion of the optical fiber preform heated and molten by the heating device reaches 1800° C. or higher is T (min) and a OH group concentration in a cladding layer of the optical fiber preform is X (wtppm).

    摘要翻译: 一种裸光纤的拉丝方法,包括以下步骤:使用加热装置熔化光纤预制棒并拉制裸光纤; 并且在加热熔融步骤之后自然地冷却裸光纤或强制地冷却裸光纤,其中在加热装置中获得裸光纤的拉伸期间的温度历史满足了 关系表达式:T <= -0.01X + 12其中加热装置加热熔化的光纤预制件的加热和熔融部分达到1800℃或更高的时间段为T(min),OH基浓度 在光纤预制件的包覆层中为X(wtppm)。

    Optical fiber drawing and twisting apparatus
    2.
    发明授权
    Optical fiber drawing and twisting apparatus 有权
    光纤拉丝加捻装置

    公开(公告)号:US07966846B2

    公开(公告)日:2011-06-28

    申请号:US12540831

    申请日:2009-08-13

    IPC分类号: C03B37/029

    摘要: An optical fiber twisting apparatus that prevents line distortion in an optical fiber undergoing a drawing process and provides a consistent coating on a bare optical fiber. This optical fiber twisting apparatus includes a twist roller apparatus that having a twist roller that, by imparting a twist to an optical fiber, imparts a twist to a molten portion of an optical fiber preform positioned on an upstream side of the optical fiber, and a support portion that supports the twist roller. The accuracy of the outer circumference of the twist roller when the twist roller is forming a part of the twist roller apparatus is 15 μm or less.

    摘要翻译: 一种光纤加捻装置,其防止经历拉伸工艺的光纤中的线变形,并在裸光纤上提供一致的涂层。 这种光纤加捻装置包括一个加捻辊装置,该加捻辊装置具有一个加捻辊,通过赋予光纤的扭曲,对位于光纤的上游侧的光纤预制件的熔融部分施加扭曲, 支撑扭转辊的支撑部分。 当加捻辊形成加捻辊装置的一部分时,加捻辊的外周的精度为15μm以下。

    Drawing method for bare optical fiber, manufacturing method for optical fiber, and optical fiber
    3.
    发明申请
    Drawing method for bare optical fiber, manufacturing method for optical fiber, and optical fiber 有权
    裸光纤拉丝方法,光纤制造方法和光纤

    公开(公告)号:US20060204193A1

    公开(公告)日:2006-09-14

    申请号:US11433576

    申请日:2006-05-15

    IPC分类号: G02B6/02

    摘要: A drawing method for a bare optical fiber, comprises the steps of: melting an optical fiber preform using a heating device and drawing the bare optical fiber; and naturally cooling down the bare optical fiber or forcibly cooling down the bare optical fiber by a cooling device after the heating and melting step, wherein a temperature history during the drawing the optical fiber preform to obtain the bare optical fiber in the heating device satisfies a relational expression: T≦−0.01X+12 where a time period when the heated and molten portion of the optical fiber preform heated and molten by the heating device reaches 1800° C. or higher is T (min) and a OH group concentration in a cladding layer of the optical fiber preform is X (wtppm).

    摘要翻译: 一种裸光纤的拉丝方法,包括以下步骤:使用加热装置熔化光纤预制棒并拉制裸光纤; 并且在加热熔融步骤之后自然地冷却裸光纤或强制地冷却裸光纤,其中在加热装置中获得裸光纤的拉伸期间的温度历史满足了 关系表达式:T <= -0.01X + 12其中加热装置加热熔化的光纤预制件的加热和熔融部分达到1800℃或更高的时间段为T(min),OH基浓度 在光纤预制件的包覆层中为X(wtppm)。

    OPTICAL FIBER TWISTING APPARATUS, METHOD OF MANUFACTURING OPTICAL FIBER, AND OPTICAL FIBER
    4.
    发明申请
    OPTICAL FIBER TWISTING APPARATUS, METHOD OF MANUFACTURING OPTICAL FIBER, AND OPTICAL FIBER 有权
    光纤双绞设备,制造光纤的方法和光纤

    公开(公告)号:US20090303464A1

    公开(公告)日:2009-12-10

    申请号:US12540831

    申请日:2009-08-13

    摘要: An optical fiber twisting apparatus that prevents line distortion in an optical fiber undergoing a drawing process and provides a consistent coating on a bare optical fiber. This optical fiber twisting apparatus includes a twist roller apparatus that having a twist roller that, by imparting a twist to an optical fiber, imparts a twist to a molten portion of an optical fiber preform positioned on an upstream side of the optical fiber, and a support portion that supports the twist roller. The accuracy of the outer circumference of the twist roller when the twist roller is forming a part of the twist roller apparatus is 15 μm or less.

    摘要翻译: 一种光纤加捻装置,其防止经历拉伸工艺的光纤中的线变形,并在裸光纤上提供一致的涂层。 这种光纤加捻装置包括一个加捻辊装置,该加捻辊装置具有一个加捻辊,通过赋予光纤的扭曲,对位于光纤的上游侧的光纤预制件的熔融部分施加扭曲, 支撑扭转辊的支撑部分。 当加捻辊形成加捻辊装置的一部分时,加捻辊的外周的精度为15μm以下。

    Optical fiber twisting apparatus, method of manufacturing optical fiber, and optical fiber
    5.
    发明申请
    Optical fiber twisting apparatus, method of manufacturing optical fiber, and optical fiber 有权
    光纤加捻装置,光纤制造方法及光纤

    公开(公告)号:US20060245713A1

    公开(公告)日:2006-11-02

    申请号:US11471662

    申请日:2006-06-21

    IPC分类号: G02B6/00

    摘要: An optical fiber twisting apparatus that prevents line distortion in an optical fiber undergoing a drawing process and provides a consistent coating on a bare optical fiber. This optical fiber twisting apparatus includes a twist roller apparatus that having a twist roller that, by imparting a twist to an optical fiber, imparts a twist to a molten portion of an optical fiber preform positioned on an upstream side of the optical fiber, and a support portion that supports the twist roller. The accuracy of the outer circumference of the twist roller when the twist roller is forming a part of the twist roller apparatus is 15 μm or less.

    摘要翻译: 一种光纤加捻装置,其防止经历拉伸工艺的光纤中的线变形,并在裸光纤上提供一致的涂层。 这种光纤加捻装置包括一个加捻辊装置,该加捻辊装置具有一个加捻辊,通过赋予光纤的扭曲,对位于光纤的上游侧的光纤预制件的熔融部分施加扭曲, 支撑扭转辊的支撑部分。 当加捻辊形成加捻辊装置的一部分时,加捻辊的外周的精度为15μm以下。

    Optical fiber twisting apparatus with a roller having an accuracy of 15 microns or less
    6.
    发明授权
    Optical fiber twisting apparatus with a roller having an accuracy of 15 microns or less 有权
    具有精度为15微米以下的辊的光纤加捻装置

    公开(公告)号:US07845195B2

    公开(公告)日:2010-12-07

    申请号:US11471662

    申请日:2006-06-21

    IPC分类号: C03B37/027 C03B37/075

    摘要: An optical fiber twisting apparatus that prevents line distortion in an optical fiber undergoing a drawing process and provides a consistent coating on a bare optical fiber. This optical fiber twisting apparatus includes a twist roller apparatus that having a twist roller that, by imparting a twist to an optical fiber, imparts a twist to a molten portion of an optical fiber preform positioned on an upstream side of the optical fiber, and a support portion that supports the twist roller. The accuracy of the outer circumference of the twist roller when the twist roller is forming a part of the twist roller apparatus is 15 μm or less.

    摘要翻译: 一种光纤加捻装置,其防止经历拉伸工艺的光纤中的线变形,并在裸光纤上提供一致的涂层。 这种光纤加捻装置包括一个加捻辊装置,该加捻辊装置具有一个加捻辊,通过赋予光纤的扭曲,对位于光纤的上游侧的光纤预制件的熔融部分施加扭曲, 支撑扭转辊的支撑部分。 当加捻辊形成加捻辊装置的一部分时,加捻辊的外周的精度为15μm以下。

    Single Mode Optical Fiber and Manufacturing Method Therefor
    7.
    发明申请
    Single Mode Optical Fiber and Manufacturing Method Therefor 审中-公开
    单模光纤及其制造方法

    公开(公告)号:US20090084141A1

    公开(公告)日:2009-04-02

    申请号:US12327993

    申请日:2008-12-04

    IPC分类号: C03B37/018

    摘要: An optical fiber is formed by performing vapor phase deposition of SiO2 on the outside of a glass rod comprising a core section and a first cladding section and drawing a glass preform which formed by a second cladding section. Also, a single mode optical fiber is manufactured so that the ratio of the diameter D of the first cladding section and the diameter d of the core section is in a range of 4.0 to 4.8, and OH concentration is 0.1 ppm or less. Also, an optical fiber is manufactured so that a value of D/d>4.8, and the OH concentration is 0. 1 ppm or less. It is thereby possible to maintain an initial loss in the 1380 nm wavelength range even if hydrogen diffusion occurs.

    摘要翻译: 通过在包括芯部和第一包层部分的玻璃棒的外部进行SiO 2的气相沉积并且拉制由第二包层部形成的玻璃预制件来形成光纤。 此外,制造单模光纤,使得第一包层部分的直径D和芯部分的直径d的比率在4.0至4.8的范围内,并且OH浓度为0.1ppm或更小。 此外,制造光纤,使得D / d> 4.8的值和OH浓度为0.1ppm以下。 因此即使发生氢扩散,也可以保持1380nm波长范围的初始损耗。

    RADIOWAVE ABSORBER
    9.
    发明申请
    RADIOWAVE ABSORBER 有权
    RADIOWAVE吸收器

    公开(公告)号:US20130257639A1

    公开(公告)日:2013-10-03

    申请号:US13681713

    申请日:2012-11-20

    IPC分类号: H01Q17/00

    CPC分类号: H01Q17/00 H01Q17/004

    摘要: A radiowave absorber of an embodiment includes: core-shell particles each including: a core portion that contains at least one magnetic metal element selected from a first group including Fe, Co, and Ni, and at least one metal element selected from a second group including Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, rare-earth elements, Ba, and Sr; and a shell layer that coats at least part of the core portion, and includes an oxide layer containing at least one metal element selected from the second group and contained in the core portion; and a binding layer that binds the core-shell particles, and has a higher resistance than the resistance of the core-shell particles. The volume filling rate of the core-shell particles in the radiowave absorber is not lower than 10% and not higher than 55%.

    摘要翻译: 一个实施方案的无线电波吸收器包括:核 - 壳颗粒,每个核 - 壳颗粒包括:芯部,其包含选自包含Fe,Co和Ni的第一组中的至少一种磁性金属元素,以及选自第二组的至少一种金属元素 包括Mg,Al,Si,Ca,Zr,Ti,Hf,Zn,Mn,稀土元素,Ba和Sr; 以及壳层,其涂覆至少部分芯部,并且包括含有选自第二组并且包含在芯部中的至少一种金属元素的氧化物层; 和结合层,其结合核 - 壳颗粒,并且具有比核 - 壳颗粒的电阻更高的电阻。 无线电波吸收体中核 - 壳颗粒的体积填充率不低于10%且不高于55%。