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    OPTICAL FIBER PREFORM AND METHOD OF MANUFACTURING OPTICAL FIBER
    1.
    发明申请
    OPTICAL FIBER PREFORM AND METHOD OF MANUFACTURING OPTICAL FIBER 有权

    公开(公告)号：US20170283301A1

    公开(公告)日：2017-10-05

    申请号：US15631442

    申请日：2017-06-23

    申请人： FURUKAWA ELECTRIC CO., LTD.

    发明人： Mitsuhiro KAWASAKI

    IPC分类号： C03B37/012 ,  G02B6/02

    CPC分类号： C03B37/012 ,  C03B37/01251 ,  C03B37/0253 ,  C03B37/02772 ,  C03B2205/40 ,  C03B2205/44 ,  C03B2205/45 ,  C03B2205/47 ,  C03B2205/72 ,  C03C19/00 ,  G02B6/02

    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 BASE MATERIAL MACHINING METHOD
    3.
    发明申请
    OPTICAL FIBER BASE MATERIAL MACHINING METHOD 有权
    光纤基材加工方法

    公开(公告)号：US20160264450A1

    公开(公告)日：2016-09-15

    申请号：US15063437

    申请日：2016-03-07

    申请人： Shin-Etsu Chemical Co., Ltd.

    发明人： Hideki FUJII ,  Takashi KOSHIGAI

    IPC分类号： C03B37/012 ,  C03C25/00

    CPC分类号： C03B37/01251 ,  C03B37/02772 ,  C03B2205/47 ,  C03C25/002 ,  Y02P40/57

    摘要： An optical fiber base material machining method for forming spindle-shaped portions at ends of the optical fiber base material by severing the optical fiber base material after reducing an outer diameter of the optical fiber base material to a predetermined target outer diameter at a predetermined machining position, comprising: reducing the outer diameter to a predetermined intermediate outer diameter between the outer diameter before the machining and the target outer diameter at the machining position; flame polishing a surface of the optical fiber base material in a region including the machining position; and further reducing the outer diameter of the optical fiber base material.

    摘要翻译： 1.一种光纤母材加工方法，其特征在于，在将所述光纤基材的外径在规定的加工位置缩小到规定的目标外径之后切断所述光纤基材，在所述光纤基材的端部形成纺锤状部 包括：将加工前的外径和加工位置的目标外径之间的外径减小到规定的中间外径; 在包括加工位置的区域中对光纤基材的表面进行火焰抛光; 并进一步减小光纤基材的外径。

    Method for drawing grin lens fiber
    4.
    发明授权
    Method for drawing grin lens fiber 有权
    绘制咧嘴透镜光纤的方法

    公开(公告)号：US09422186B2

    公开(公告)日：2016-08-23

    申请号：US13257410

    申请日：2009-03-30

    申请人： Toshiaki Fukuda

    发明人： Toshiaki Fukuda

    IPC分类号： C03B37/025 ,  C03B37/027 ,  G02B6/028 ,  G02B3/00

    CPC分类号： C03B37/02772 ,  C03B2203/26 ,  C03B2205/47 ,  G02B3/0087 ,  G02B6/028

    摘要： When drawing of a GRIN lens from a preform is started, wastage of the preform is reduced and the amount of time taken from the start of elongation of the preform to the start of winding is reduced. A preform, to a lower end of which a weight formed of silica is fused, is set in a heating furnace, and drawing of the preform is started by heating a fused portion where the preform and the weight are fused to each other. This can reduce wastage of the preform. Since an elongation speed of the preform is increased by the weight of the weight, the amount of time taken from the start of the elongation of the preform to the start of winding can be decreased.

    摘要翻译： 当从预成型件拉出GRIN透镜时，预成型件的浪费减少，并且从预成型件伸长开始到开始卷绕所花费的时间减少。 在其下端将由二氧化硅形成的重量熔融的预制件放置在加热炉中，并通过加热预成型件和重量彼此熔合的熔融部分来开始拉伸预成型件。 这可以减少预制件的浪费。 由于预制件的伸长速度通过重量的重量而增加，所以可以减少从预成型件伸长开始到开始卷绕所花费的时间。

    METHOD OF MANUFACTURING AN OPTICAL FIBER
    6.
    发明申请
    METHOD OF MANUFACTURING AN OPTICAL FIBER 有权

    公开(公告)号：US20130327097A1

    公开(公告)日：2013-12-12

    申请号：US13911372

    申请日：2013-06-06

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

    发明人： Yuji ABE ,  Ryutaro MIYAZAKI

    IPC分类号： C03B37/025

    CPC分类号： C03B37/0253 ,  C03B37/025 ,  C03B37/02736 ,  C03B37/02772 ,  C03B2205/07 ,  C03B2205/47

    摘要： A manufacturing method that enables stably making a high-quality optical fiber is provided. The manufacturing method of the present invention comprises: a softened portion falling step in which an optical fiber preform is heated in a heating furnace and a dropping part of softened portion of the preform thus heat-softened is allowed to drop; and a drawing step for drawing the preform such that the softened glass is drawn into a fiber by applying a tension with a take-up means after the softened portion falling step, whereas the preform is rotated about its axis at the softened portion falling step.

    Method of manufacturing an optical fiber
    9.
    发明授权
    Method of manufacturing an optical fiber 有权
    制造光纤的方法

    公开(公告)号：US09169151B2

    公开(公告)日：2015-10-27

    申请号：US13911372

    申请日：2013-06-06

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

    发明人： Yuji Abe ,  Ryutaro Miyazaki

    IPC分类号： C03B37/025 ,  C03B37/027

    CPC分类号： C03B37/0253 ,  C03B37/025 ,  C03B37/02736 ,  C03B37/02772 ,  C03B2205/07 ,  C03B2205/47

    摘要： A manufacturing method that enables stably making a high-quality optical fiber is provided. The manufacturing method of the present invention comprises: a softened portion falling step in which an optical fiber preform is heated in a heating furnace and a dropping part of softened portion of the preform thus heat-softened is allowed to drop; and a drawing step for drawing the preform such that the softened glass is drawn into a fiber by applying a tension with a take-up means after the softened portion falling step, whereas the preform is rotated about its axis at the softened portion falling step.

    摘要翻译： 提供了能够稳定地制造高质量光纤的制造方法。 本发明的制造方法包括：软化部分落下步骤，其中在加热炉中加热光纤预制件并使预热器的软化部分的下降部分被加热软化， 以及拉伸步骤，用于拉伸预成型体，使得软化玻璃通过在软化部分下降步骤之后施加带有卷取装置的张力而被拉入纤维中，而预成型件在软化部分下降步骤期间绕其轴线旋转。