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    Optical fiber splicing method and optical fiber
    3.
    发明授权
    Optical fiber splicing method and optical fiber 有权
    光纤拼接方法和光纤

    公开(公告)号：US06705772B2

    公开(公告)日：2004-03-16

    申请号：US10161624

    申请日：2002-06-05

    申请人： Motonori Nakamura ,  Osamu Kasuu ,  Daisuke Yokota ,  Yuichi Ohga

    发明人： Motonori Nakamura ,  Osamu Kasuu ,  Daisuke Yokota ,  Yuichi Ohga

    IPC分类号： G02B6255

    CPC分类号： G01N21/67 ,  G01N21/72

    摘要： An optical fiber splicing method capable of fully reducing the splice loss at room temperature is provided. In the optical fiber splicing method in accordance with the present invention, respective end faces of optical fibers are fused together in a splicing step (S101). In a condition setting step (S102), a set value &agr;0 is set. Thereafter, a heating step (S103), a measuring step (S104), and a termination determining step (S105) are carried out repeatedly. In the heating step, a region including the fusion-spliced point is heated under a predetermined heating condition. In the measuring step, splice loss is measured. In the termination determining step, the splice loss &agr;n measured in the measuring step and the set value &agr;0 set in the condition setting step are compared with each other in terms of magnitude. If the splice loss &agr;n is not greater than the set value &agr;0, then it is determined that the alternation should be terminated, whereby the optical fiber connecting operation is terminated.

    摘要翻译： 提供能够完全降低室温下的接头损耗的光纤接合方法。 在根据本发明的光纤拼接方法中，光纤的各个端面在拼接步骤中熔合在一起（S101）。 在条件设定步骤（S102）中，设定设定值α0。 此后，重复执行加热步骤（S103），测量步骤（S104）和终止确定步骤（S105）。 在加热步骤中，在预定加热条件下加热包含熔接点的区域。 在测量步骤中，测量接头损耗。 在终止确定步骤中，在测量步骤中测量的拼接损耗色差和在条件设置步骤中设置的设置值α0在幅度方面彼此进行比较。 如果接头损失字母不大于设定值α0，则确定应该终止交替，从而终止光纤连接操作。

    Process for producing optical fiber preform
    4.
    发明授权
    Process for producing optical fiber preform 有权
    生产光纤预制棒的工艺

    公开(公告)号：US06324871B1

    公开(公告)日：2001-12-04

    申请号：US09709321

    申请日：2000-11-13

    申请人： Motonori Nakamura ,  Yuichi Ohga ,  Toshio Danzuka

    发明人： Motonori Nakamura ,  Yuichi Ohga ,  Toshio Danzuka

    IPC分类号： C03B2000

    CPC分类号： C03B37/0142 ,  C03B2207/36 ,  C03B2207/52 ,  C03B2207/62 ,  C03B2207/70 ,  Y02P40/57

    摘要： In a process for producing an optical fiber preform, a starting member and a glass synthesizing burner are reciprocated relative to each other so that fine glass particles synthesized with the burner are deposited layer by layer on the starting member, and a heating power of the glass synthesizing burner in a nonsteady outside diameter portion at either end of the soot preform is adjusted to control the temperature of the nonsteady outside diameter portion at either end against local elevation. The starting member is formed of a transparent glass rod that is held within a vessel and rotatable about its own axis, the burner is fitted on a lateral side of the vessel at right angles to the rotating axis of the starting member and is movable towards or away from the starting member.

    摘要翻译： 在制造光纤预制件的过程中，起始构件和玻璃合成燃烧器相对于彼此往复运动，使得在燃烧器上合成的细微玻璃颗粒逐层沉积在起始构件上，并且玻璃的加热功率 在烟灰预制件的任一端的不稳定的外径部分中合成燃烧器被调节以控制任一端的不稳定的外径部分的温度抵抗局部升高。 起始构件由保持在容器内并可围绕其自身的轴线旋转的透明玻璃棒形成，燃烧器以与起始构件的旋转轴线成直角的方式装配在容器的横向侧上，并且可朝着或 远离起始成员。

    Method of producing glass particles deposit
    5.
    发明授权
    Method of producing glass particles deposit 失效
    生产玻璃颗粒沉积物的方法

    公开(公告)号：US06748769B2

    公开(公告)日：2004-06-15

    申请号：US09995857

    申请日：2001-11-29

    申请人： Toshihiro Ooishi ,  Yuichi Ohga ,  Yoshio Yokoyama ,  Motonori Nakamura

    发明人： Toshihiro Ooishi ,  Yuichi Ohga ,  Yoshio Yokoyama ,  Motonori Nakamura

    IPC分类号： C03B37014

    CPC分类号： C03B37/0142 ,  C03B2207/52 ,  C03B2207/66 ,  C03B2207/70 ,  Y02P40/57

    摘要： A plurality of glass particle synthesizing burners are disposed opposite to a rotating starting rod. The starting rod and the glass particle synthesizing burners are relatively reciprocally moved to each other in parallel to the axial direction, so that glass particles synthesized by the burners are sequentially deposited on the surface of the starting rod. The movement is stopped and restarted repeatedly once or more than once during one reciprocal movement.

    摘要翻译： 多个玻璃颗粒合成燃烧器与旋转起始杆相对设置。 起始杆和玻璃粒子合成燃烧器相对于轴向平行地相互往复移动，使得由燃烧器合成的玻璃颗粒依次沉积在起始杆的表面上。 在一个往复运动期间，运动被重复停止并重复重启一次或多次。

    Method of splicing two optical fibers
    6.
    发明授权
    Method of splicing two optical fibers 有权
    拼接两根光纤的方法

    公开(公告)号：US06550985B2

    公开(公告)日：2003-04-22

    申请号：US09845495

    申请日：2001-05-01

    申请人： Motonori Nakamura ,  Yuichi Ohga

    发明人： Motonori Nakamura ,  Yuichi Ohga

    IPC分类号： G02B6255

    CPC分类号： G02B6/2551 ,  G02B6/2552

    摘要： Two optical fibers to be spliced are prepared, coatings of resin are removed from end portions of the respective optical fibers to expose glass fibers, the glass fibers are aligned to each other, an a fusion step is carried out to heat the end faces of the glass fibers to cause fusion thereof to form a fusion-spliced portion. After that, an additive-diffusing step is carried out to diffuse an additive added in the glass fibers around the fusion-spiced portion, by a heat treatment around the fusion-spliced portion, by a heat treatment around the fusion-spliced portion at a first temperature of not less than 800° C. nor more than 1500° C. Further after the additive-diffusing step, a thermal-strain-removing step is carried out to remove thermal strain by a heat treatment of a wider region than heated regions in the fusion splice step and in the additive-diffusing step of the fusion-spliced portion, at a temperature of not less than 500° C. nor more than 1200° C.

    摘要翻译： 准备待接合的两根光纤，从各光纤的端部去除树脂涂层，露出玻璃纤维，玻璃纤维彼此对准，进行熔融步骤，以加热 玻璃纤维引起其熔合以形成熔接部分。 之后，通过在熔融部分周围的热处理，通过在熔融部分周围的热处理，在熔融加工的部分周围进行热处理，进行添加剂扩散步骤，使加入到熔融加工部分的玻璃纤维中的添加剂扩散 第一温度不低于800℃，也不超过1500℃。此外，在添加剂扩散步骤之后，进行热应变去除步骤以通过比加热区域更宽的区域的热处理来除去热应变 在融合接合步骤和熔融部分的添加剂扩散步骤中，在不低于500℃，不超过1200℃的温度下

    Method of producing optical fiber preform
    7.
    发明授权
    Method of producing optical fiber preform 有权
    生产光纤预制棒的方法

    公开(公告)号：US06895783B2

    公开(公告)日：2005-05-24

    申请号：US09956867

    申请日：2001-09-21

    申请人： Toshihiro Ohishi ,  Yuichi Ohga ,  Motonori Nakamura

    发明人： Toshihiro Ohishi ,  Yuichi Ohga ,  Motonori Nakamura

    IPC分类号： C03B37/018 ,  C03B8/04 ,  C03B37/014 ,  G02B6/00

    CPC分类号： C03B37/01486 ,  C03B37/0142 ,  C03B2207/52 ,  C03B2207/66 ,  C03B2207/70 ,  Y02P40/57

    摘要： A plurality of glass particles synthesizing burners are arranged at a predetermined burner interval opposite to a rotating starting rod. The starting rod and the glass particles synthesizing burners are relatively parallely reciprocally moved, and the soot deposition is conducted. A reciprocating speed v(mm/minute), axis rotating speed r (rpm), and burner interval L (mm) are set so that a value A expressed by the expression A=(r/v)×L is in a range 40≧A≧8.

    摘要翻译： 合成燃烧器的多个玻璃颗粒以与旋转起始杆相反的预定燃烧器间隔布置。 合成燃烧器的起始杆和玻璃颗粒相对平行地往复移动，并进行烟灰沉积。 设定往复速度v（mm /分钟），轴转速r（rpm）和燃烧器间隔L（mm），使得由表达式A =（r / v）×L表示的值A在40> = A> = 8。

    Method of manufacturing optical fiber preform
    8.
    发明授权
    Method of manufacturing optical fiber preform 有权
    制造光纤预制棒的方法

    公开(公告)号：US06889529B2

    公开(公告)日：2005-05-10

    申请号：US09983624

    申请日：2001-10-25

    申请人： Toshihiro Ooishi ,  Yuichi Ohga ,  Yoshio Yokoyama ,  Motonori Nakamura

    发明人： Toshihiro Ooishi ,  Yuichi Ohga ,  Yoshio Yokoyama ,  Motonori Nakamura

    IPC分类号： G02B6/00 ,  C03B37/014 ,  C03B37/07 ,  B05D1/10

    CPC分类号： C03B37/0142 ,  C03B37/01493 ,  C03B2207/36 ,  C03B2207/52 ,  C03B2207/66 ,  C03B2207/70 ,  Y02P40/57

    摘要： A method for producing an optical fiber preform is provided in which the variation of the outer diameter in the longitudinal direction is minimized and a target quantity of glass is accumulated as a whole. Based on a predetermined relationship between three variables: the outer diameter of a starting rod being a first variable, the outer diameter of an optical fiber preform a second variable, and the timing for ending the glass particles depositing process a third variable, the starting rod and burners are subjected to relative reciprocating movement so as to deposit glass particles on the starting rod until the timing for ending the depositing process, and then the resulting deposit body is vitrified. The third variable may be the traverse velocity, the glass particles deposition time, or the weight of a soot glass deposit body.

    摘要翻译： 提供了一种光纤预制棒的制造方法，其中，使长径方向的外径变化最小化，玻璃的目标量整体上累积。 基于三个变量之间的预定关系：起始杆的外径为第一变量，光纤预制件的外径为第二变量，以及用于结束玻璃颗粒沉积过程的第三变量的定时，起始杆 并对燃烧器进行相对往复运动，以将玻璃颗粒沉积在起始杆上直到结束沉积过程的时刻，然后使所得的沉积体被玻璃化。 第三个变量可以是横穿速度，玻璃颗粒沉积时间或烟灰玻璃沉积体的重量。

    Method for producing soot body
    9.
    发明授权
    Method for producing soot body 有权
    生产烟灰体的方法

    公开(公告)号：US06837077B2

    公开(公告)日：2005-01-04

    申请号：US10247514

    申请日：2002-09-20

    申请人： Motonori Nakamura ,  Toshihiro Ooishi ,  Yuichi Ohga

    发明人： Motonori Nakamura ,  Toshihiro Ooishi ,  Yuichi Ohga

    IPC分类号： C03B8/04 ,  C03B20/00 ,  C03B37/014 ,  C03B37/018

    CPC分类号： C03B37/01413 ,  C03B37/0142 ,  C03B2207/36 ,  C03B2207/52 ,  C03B2207/66 ,  C03B2207/70 ,  Y02P40/57

    摘要： Three or more glass particle synthesizing burners are arranged to be opposed to a rotating glass rod. The glass rod and the glass particle synthesizing burners are reciprocated in parallel and relatively to deposit glass particles synthesized by the burners on the surface of the glass rod, thereby producing a soot body. The glass particle synthesizing conditions of the burners arranged at both ends are changed to have a greater deposition amount of glass particles per unit time in part or all of its movement range than other burners.

    摘要翻译： 三个或更多个玻璃颗粒合成燃烧器被布置成与旋转的玻璃棒相对。 玻璃棒和玻璃颗粒合成燃烧器平行往复运动并相对于在玻璃棒的表面上沉积由燃烧器合成的玻璃颗粒，从而产生烟灰体。 布置在两端的燃烧器的玻璃颗粒合成条件被改变为具有比其他燃烧器的部分或全部移动范围更大的玻璃颗粒的每单位时间的沉积量。

    Apparatus for dehydrating and consolidating an optical fiber preform and method of the same
    10.
    发明授权
    Apparatus for dehydrating and consolidating an optical fiber preform and method of the same 有权
    用于脱水和固结光纤预型件的设备及其方法

    公开(公告)号：US06845636B2

    公开(公告)日：2005-01-25

    申请号：US09943418

    申请日：2001-08-31

    申请人： Takashi Yamazaki ,  Takashi Kogo ,  Yuichi Ohga ,  Tadashi Enomoto

    发明人： Takashi Yamazaki ,  Takashi Kogo ,  Yuichi Ohga ,  Tadashi Enomoto

    IPC分类号： G02B6/00 ,  C03B37/014 ,  C03B37/012

    CPC分类号： C03B37/0146 ,  Y10S65/90

    摘要： A dehydration and consolidation furnace and a dehydration and consolidation method in which gas in a chamber does not leak to a furnace body room and gas in a furnace body room does not leak into a chamber is provided. A furnace of one embodiment of this invention has first muffle tube 3 and second muffle tube 4. The second muffle tube 4 is arranged coaxially around the first muffle tube 3. An optical fiber preform is arranged in this furnace. During the dehydration and consolidation process the pressure of the intermediate room 10 is set lower than a pressure inside the first muffle tube and outside the second muffle tube, and a gas supply and exhaust of the intermediate room 10 are performed independent of the gas supply and exhaust of the first muffle tube and a furnace body room.

    摘要翻译： 提供了一种脱水和固结炉以及室内的气体不会泄漏到炉体室并且在炉体室中的气体不会泄漏到室中的脱水和固化方法。 本发明的一个实施例的炉子具有第一马弗管3和第二马弗管4。第二马弗管4同轴地布置在第一马弗管3的周围。光纤预制件布置在该炉中。 在脱水和固结过程中，中间室10的压力被设定为低于第一马弗管内部和第二马弗管外部的压力，中间室10的供气和排气独立于气体供应和 第一马弗管和炉体室的排气。