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    METHOD OF MANUFACTURING OPTICAL FIBER BASE MATERIAL AND APPARATUS OF THE SAME
    23.
    发明申请
    METHOD OF MANUFACTURING OPTICAL FIBER BASE MATERIAL AND APPARATUS OF THE SAME 有权
    制造光纤基材的方法及其设备

    公开(公告)号：US20090211302A1

    公开(公告)日：2009-08-27

    申请号：US12341538

    申请日：2008-12-22

    Applicant: Dai Inoue ,  Hiroyuki Koide ,  Takaaki Nagao

    Inventor： Dai Inoue ,  Hiroyuki Koide ,  Takaaki Nagao

    IPC: C03B37/01 ,  C03B5/235 ,  C03B37/029 ,  C03B37/07

    CPC classification number: C03B37/01446 ,  C03B37/0146

    Abstract: A method of manufacturing an optical fiber base material includes: forming a porous glass base material by depositing glass particles; providing a vessel which employs a composite tube, the composite tube including a portion formed by jacketing a first quartz glass containing aluminum equal to or less than 0.01 ppm with a second quartz glass containing aluminum equal to or more than 15 ppm; introducing dehydration reaction gas and inert gas into the vessel; heating the jacketed portion in the vessel which contains the dehydration reaction gas and the inert gas; and inserting the porous glass base material into the heated vessel to dehydrate and sinter the porous glass base material.

    Abstract translation: 制造光纤基材的方法包括：通过沉积玻璃颗粒形成多孔玻璃基材; 提供采用复合管的容器，所述复合管包括通过用包含等于或大于15ppm的铝的第二石英玻璃将含有等于或小于0.01ppm的铝的第一石英玻璃护套形成的部分; 将脱水反应气体和惰性气体引入容器中; 加热含有脱水反应气体和惰性气体的容器中的夹套部分; 并将多孔玻璃基材插入加热的容器中以使多孔玻璃基材脱水并烧结。

    Optical fiber
    24.
    发明授权
    Optical fiber 有权
    光纤

    公开(公告)号：US07574087B2

    公开(公告)日：2009-08-11

    申请号：US11790833

    申请日：2007-04-27

    Applicant: Dai Inoue ,  Hiroshi Oyamada ,  Yuichi Morishita

    Inventor： Dai Inoue ,  Hiroshi Oyamada ,  Yuichi Morishita

    IPC: G02B6/02

    CPC classification number: G02B6/03611 ,  G02B6/02004 ,  G02B6/02019 ,  G02B6/0281

    Abstract: An optical fiber includes a clad portion and a core portion surrounded by the clad portion. Here, the clad portion is formed by substantially pure quartz, and the core portion has a higher refractive index than the clad portion. The optical fiber is characterized in that a relative refractive index difference of a center of the core portion falls within a range from 0.15% to 0.30%, and a maximum relative refractive index difference of the core portion falls within a range from 0.4% to 0.6%. Here, it is preferable that an average relative refractive index difference of the core portion falls within a range from 0.30% to 0.40%. Here, a mode field diameter of the optical fiber falls within a range from 8.6 μm to 9.5 μm at 1310 nm, and a cable cutoff wavelength of the optical fiber is equal to or lower than 1260 nm. Note that, after the optical fiber is subjected to hydrogen aging, a loss of the optical fiber is preferably equal to or lower than 0.4 dB/km at 1383 nm.

    Abstract translation: 光纤包括包层部分和由包层部分围绕的芯部分。 这里，包层部分由基本上纯的石英形成，并且芯部具有比包层部更高的折射率。 光纤的特征在于芯部的中心的相对折射率差在0.15％〜0.30％的范围内，芯部的最大相对折射率差落入0.4〜0.6的范围内 ％。 这里，芯部的平均相对折射率差优选在0.30〜0.40％的范围内。 这里，光纤的模场直径在1310nm处在8.6μm〜9.5μm的范围内，光纤的电缆截止波长为1260nm以下。 注意，在光纤经受氢老化之后，在1383nm处光纤的损耗优选等于或低于0.4dB / km。

    Production method and device of optical fiber parent material
    25.
    发明申请
    Production method and device of optical fiber parent material 审中-公开
    光纤母材的生产方法和装置

    公开(公告)号：US20070271961A1

    公开(公告)日：2007-11-29

    申请号：US11822992

    申请日：2007-07-11

    Applicant: Dai Inoue ,  Makoto Yoshida

    Inventor： Dai Inoue ,  Makoto Yoshida

    IPC: C03B37/07 ,  C03B37/018 ,  G01N21/43

    CPC classification number: C03B37/01486 ,  C03B2207/50 ,  C03B2207/60 ,  C03B2207/62 ,  C03B2207/70

    Abstract: A manufacturing method of an optical fiber base material 2 according to a VAD method includes: detecting a tip position of a soot core by means of a discrete value; averaging the value of the detected tip position by a predetermined time; and adjusting a manufacturing condition of the soot core so that the averaged value of the tip position is constant, where in the adjusting step, the manufacturing condition is sequentially adjusted so that a difference between the averaged value of the tip position and a value of a target position set between two adjacent values of the tip position discretely detectable in advance is 0.

    Abstract translation: 根据VAD方法的光纤基材2的制造方法包括：通过离散值检测烟灰芯的尖端位置; 将检测到的末端位置的值平均预定时间; 并且调整烟灰芯的制造条件使得尖端位置的平均值恒定，其中在调整步骤中依次调节制造条件，使得尖端位置的平均值与a的值之间的差 预先离散可检测的尖端位置的两个相邻值之间设定的目标位置为0。

    Optical fiber
    26.
    发明申请
    Optical fiber 有权
    光纤

    公开(公告)号：US20070196062A1

    公开(公告)日：2007-08-23

    申请号：US11790833

    申请日：2007-04-27

    Applicant: Dai Inoue ,  Hiroshi Oyamada ,  Yuichi Morishita

    Inventor： Dai Inoue ,  Hiroshi Oyamada ,  Yuichi Morishita

    IPC: G02B6/02

    CPC classification number: G02B6/03611 ,  G02B6/02004 ,  G02B6/02019 ,  G02B6/0281

    Abstract: An optical fiber includes a clad portion and a core portion surrounded by the clad portion. Here, the clad portion is formed by substantially pure quartz, and the core portion has a higher refractive index than the clad portion. The optical fiber is characterized in that a relative refractive index difference of a center of the core portion falls within a range from 0.15% to 0.30%, and a maximum relative refractive index difference of the core portion falls within a range from 0.4% to 0.6%. Here, it is preferable that an average relative refractive index difference of the core portion falls within a range from 0.30% to 0.40%. Here, a mode field diameter of the optical fiber falls within a range from 8.6 μm to 9.5 μm at 1310 nm, and a cable cutoff wavelength of the optical fiber is equal to or lower than 1260 nm. Note that, after the optical fiber is subjected to hydrogen aging, a loss of the optical fiber is preferably equal to or lower than 0.4 dB/km at 1383 nm.

    Abstract translation: 光纤包括包层部分和由包层部分围绕的芯部分。 这里，包层部分由基本上纯的石英形成，并且芯部具有比包层部更高的折射率。 光纤的特征在于芯部的中心的相对折射率差在0.15％〜0.30％的范围内，芯部的最大相对折射率差落入0.4〜0.6的范围内 ％。 这里，芯部的平均相对折射率差优选在0.30〜0.40％的范围内。 这里，光纤的模场直径在1310nm处在8.6μm〜9.5μm的范围内，光纤的电缆截止波长为1260nm以下。 注意，在光纤经受氢老化之后，在1383nm处光纤的损耗优选等于或低于0.4dB / km。

    Optical fiber processing apparatus, processing method, and optical fiber
    27.
    发明申请
    Optical fiber processing apparatus, processing method, and optical fiber 审中-公开
    光纤加工装置，加工方法和光纤

    公开(公告)号：US20060208918A1

    公开(公告)日：2006-09-21

    申请号：US11411801

    申请日：2006-04-27

    Applicant: Dai Inoue ,  Hiroshi Oyamada

    Inventor： Dai Inoue ,  Hiroshi Oyamada

    IPC: G08B17/10 ,  G01N7/00 ,  G02B26/02 ,  G01J5/02 ,  H01S3/00 ,  G01F23/00

    CPC classification number: C03C13/047 ,  C03C25/607

    Abstract: There are provided an optical fiber processing apparatus, a processing method, and an optical fiber capable of monitoring a process of an optical fiber by gas containing at least deuterium and simultaneously detecting the termination of the process. The apparatus for processing an optical fiber in a gas atmosphere includes a door of a treatment container that puts the optical fiber in and out, a gas introducing port, a gas exhausting port, and a sampling fiber taking-out port. Further, the apparatus includes a light source that is connected to the optical fiber drawn from the sampling fiber taking-out port, and a light power meter that measures an absorption loss. In order to judge the termination of the gas process, it is preferable to include mechanism that monitors a value of the light power meter and judges the termination from the change of the value.

    Abstract translation: 提供了一种光纤处理装置，处理方法和光纤，其能够通过至少包含氘的气体监测光纤的处理，并同时检测该过程的终止。 用于处理气体气体中的光纤的装置包括将光纤插入和取出的处理容器的门，气体导入口，排气口和取样纤维取出口。 此外，该装置包括连接到从取样纤维取出口拉出的光纤的光源和测量吸收损耗的光功率计。 为了判断气体处理的终止，优选包括监视光功率计的值并根据该值的变化判断终止的机构。

    Apparatus for fabricating soot preform for optical fiber
    28.
    发明授权
    Apparatus for fabricating soot preform for optical fiber 有权

    公开(公告)号：US07082791B2

    公开(公告)日：2006-08-01

    申请号：US10698657

    申请日：2003-10-31

    Applicant: Dai Inoue ,  Go Ogino ,  Tetsuya Otosaka ,  Tadakatsu Shimada ,  Hideo Hirasawa

    Inventor： Dai Inoue ,  Go Ogino ,  Tetsuya Otosaka ,  Tadakatsu Shimada ,  Hideo Hirasawa

    IPC: C03B37/018

    CPC classification number: C03B37/01406 ,  C03B2207/54

    Abstract: An apparatus for fabricating a soot preform for an optical fiber. The soot preform is fabricated by depositing glass particles on a starting rod capable of being rotated and pulled up. The apparatus comprises elements as follows. A reaction chamber is used for depositing the glass particles on the starting rod. An upper room is located above the reaction chamber for receiving the soot preform formed in the upper portion of the reaction chamber. At least one core burner is installed in the reaction chamber. A gas-supplying inlet is located in the top part of the sidewall of the reaction chamber closest to burner(s), and a gas-exhausting outlet is located in the top part of another sidewall opposite to the gas-supplying inlet. In addition, at least one cladding burner is installed in the reaction chamber. Thus, the exhausting efficiency for the stray glass particles is increased and the bubbles and impurities in the resulting preform are reduced such that the optical property in the lengthwise direction is stable.

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