公开(公告)号：US5755849A

公开(公告)日：1998-05-26

申请号：US756483

申请日：1996-11-26

申请人： Sumio Hoshino ,  Yuichi Ohga ,  Masumi Ito ,  Toshio Danzuka ,  Tatsuhiko Saito

发明人： Sumio Hoshino ,  Yuichi Ohga ,  Masumi Ito ,  Toshio Danzuka ,  Tatsuhiko Saito

IPC分类号： C03B23/047 ,  C03B37/012 ,  C03B37/014 ,  C03B37/07

CPC分类号： C03B23/047 ,  C03B37/0124 ,  C03B37/01466

摘要： The present invention relates to a method for precisely elongating a glass preform of an optical fiber body having a desired outer diameter. In this method, a predetermined part of the glass preform is elongated as tensile stress is applied to one end of the glass preform while a predetermined part of the glass preform is heated and softened successively from one end toward the other end of the glass preform. In this elongating operation, while the outer diameter of the softening portion of the glass preform is measured, the tensile stress is adjusted such that the outer diameter of the softening portion coincides with a preset value of the control outer diameter. In particular, this method is characterized in that the preset value of the control outer diameter is changed at least during a predetermined period until termination of elongation or during a predetermined period from the start of elongation.

摘要翻译： 本发明涉及一种精确拉伸具有所需外径的光纤体的玻璃预制件的方法。 在这种方法中，玻璃预成型件的预定部分是细长的，因为拉伸应力被施加到玻璃预制件的一端，同时玻璃预制件的预定部分从玻璃预制件的一端向另一端依次加热软化。 在该拉伸操作中，在测量玻璃预制件的软化部分的外径的同时，调整拉伸应力使得软化部分的外径与控制外径的预设值一致。 特别地，该方法的特征在于，控制外径的预设值至少在延伸终止的预定时段期间或从伸长开始的预定时段期间改变。

公开(公告)号：US5676725A

公开(公告)日：1997-10-14

申请号：US623736

申请日：1996-03-29

申请人： Masumi Ito ,  Sumio Hoshino ,  Toshio Danzuka

发明人： Masumi Ito ,  Sumio Hoshino ,  Toshio Danzuka

IPC分类号： C03B37/014 ,  C03B37/018 ,  C03B37/07

CPC分类号： C03B37/0148 ,  C03B37/01413 ,  C03B37/0142 ,  C03B37/01466 ,  C03B2201/31 ,  C03B2203/24 ,  C03B2207/50 ,  C03B2207/54 ,  C03B2207/70

摘要： A method of manufacturing an optical fiber in which the deviation of a cutoff wavelength from a design value can be minimized. It is found that, upon diameter reduction of a porous core glass body by heat treatment, when the diameter reduction ratio is set to a value larger than 0.90, a "spike" in the refractive index distribution curve of a core can be prevented, and the deviation of the cutoff wavelength from the design value can be minimized. Therefore, there is provided a method comprising the first step of depositing fine SiO.sub.2 particles and fine GeO.sub.2 particles, which are produced by a core formation burner, to grow a porous core glass body from a distal end of a rotating starting rod in an axial direction, the second step of performing diameter reduction by heating the grown porous core glass body by heating means while growing the porous core glass body, and the third step of depositing fine SiO.sub.2 particles produced by a cladding formation burner to form a porous cladding glass layer on an outer surface of the diameter-reduced porous core glass body while performing growing and diameter reduction of the porous core glass body, wherein an outer diameter of the porous core glass body after the third step of depositing is larger than 0.90 times an outer diameter before diameter reduction.

摘要翻译： 制造其中截止波长与设计值的偏差可以最小化的光纤的方法。 发现通过热处理使多孔芯玻璃体直径减小时，当直径减小率设定为大于0.90的值时，可以防止芯的折射率分布曲线中的“尖峰”，并且 截止波长与设计值的偏差可以最小化。 因此，提供了一种方法，该方法包括沉积由芯形燃烧器产生的细SiO 2颗粒和细小的GeO 2颗粒的第一步骤，以从旋转起始杆的远端沿轴向方向生长多孔芯体玻璃体 第二步，通过在生长多孔芯玻璃体的同时通过加热装置加热生长的多孔芯玻璃体进行直径减小，以及第三步骤，沉积由包层形成燃烧器产生的细SiO 2颗粒，以形成多孔包层玻璃层 在减小多孔芯玻璃体的外表面，同时进行多孔芯玻璃体的生长和直径减小，其中在第三沉积步骤之后的多孔芯玻璃体的外径大于之前的外径的0.90倍 直径减小。

公开(公告)号：US5513983A

公开(公告)日：1996-05-07

申请号：US255875

申请日：1994-06-08

申请人： Masumi Ito ,  Ichiro Tuchiya ,  Toshio Danzuka ,  Yuichi Ohga ,  Sumio Hoshino

发明人： Masumi Ito ,  Ichiro Tuchiya ,  Toshio Danzuka ,  Yuichi Ohga ,  Sumio Hoshino

IPC分类号： C03B8/00 ,  C03B8/04 ,  C03B20/00 ,  C03B37/014 ,  F27B5/04

CPC分类号： C03B37/0146 ,  Y02P40/57

摘要： An apparatus for vitrifying a soot preform from which an optical fiber is produced by drawing, is composed of a main vacuum chamber 20 in which a muffle tube 70 for vitrifying the soot preform PF is located, and an auxiliary vacuum chamber 30 mounted on the main vacuum chamber 20 and communicated therewith through a passage, and a gate valve 60 for opening and closing the passage. The muffle tube 70 has a inner surface covered with silicon carbide layer 70a.

摘要翻译： 用于玻璃化烟灰预制件的装置由拉丝制成光纤的装置由主真空室20组成，主真空室20中安装用于玻璃化烟灰预成型体PF的马弗管70和安装在主体上的辅助真空室30 真空室20并通过通道与其连通，以及用于打开和关闭通道的闸阀60。 马弗管70具有覆盖有碳化硅层70a的内表面。

公开(公告)号：US5788734A

公开(公告)日：1998-08-04

申请号：US795016

申请日：1997-02-05

申请人： Sumio Hoshino ,  Toshio Danzuka ,  Yuichi Ohga ,  Masumi Ito ,  Katsuzo Mukai

发明人： Sumio Hoshino ,  Toshio Danzuka ,  Yuichi Ohga ,  Masumi Ito ,  Katsuzo Mukai

IPC分类号： C03B37/012 ,  C03B37/014 ,  C03B37/027

CPC分类号： C03B37/01205 ,  C03B37/014 ,  C03B37/0142 ,  C03B37/01446 ,  C03B37/01466 ,  C03B37/01486 ,  C03B37/02736 ,  C03B2207/60

摘要： A glass preform for an optical fiber is effectively drawn by connecting dummy rods to both ends of the glass preform and connecting the dummy rods to fitting members.

摘要翻译： 通过将虚拟棒连接到玻璃预制件的两端并将虚拟棒连接到配件构件来有效地拉制用于光纤的玻璃预制件。

公开(公告)号：US5693115A

公开(公告)日：1997-12-02

申请号：US204100

申请日：1994-03-02

申请人： Masumi Ito ,  Toshio Danzuka ,  Yuichi Ohga ,  Sumio Hoshino ,  Ichiro Tsuchiya

发明人： Masumi Ito ,  Toshio Danzuka ,  Yuichi Ohga ,  Sumio Hoshino ,  Ichiro Tsuchiya

IPC分类号： C03B8/04 ,  C03B20/00 ,  C03B37/014 ,  G02B6/00 ,  C03B37/012

CPC分类号： C03B37/01446

摘要： In order to provide an improved process for the production of a glass preform for an optical fiber which includes substantially no bubble formation therein and also has a substantially uniform shape, the present invention provides a process for the production of a glass preform which is at least partially formed from silica. In particular, a body is formed on a rod by depositing fine glass particles thereon, preferably by the vapor phase reactions, and heating the body to vitrify under a reduced atmosphere or a vacuumed atmosphere so that the glass preform is produced. According to this process, the heating includes a first heating step of degassing the body at a first heating temperature, a second heating step of shrinking the body at a second heating temperature which is higher than the first heating temperature and which is lower than a third heating temperature, and a third heating step of vitrifying the shrunken body at the third temperature which corresponds to a vitrification temperature of the fine glass particles so as to produce the glass preform.

摘要翻译： 为了提供用于生产用于光纤的玻璃预制棒的改进方法，其包括基本上不形成气泡并且还具有基本上均匀的形状，本发明提供了一种用于生产玻璃预制件的方法，所述玻璃预制件至少是 部分由二氧化硅形成。 特别地，通过优选通过气相反应在其上沉积微细玻璃颗粒而在棒上形成主体，并且在还原气氛或真空气氛下将体加热至玻璃化，从而制备玻璃预制件。 根据该方法，加热包括在第一加热温度下使本体脱气的第一加热步骤，在比第一加热温度高于第三加热温度的第二加热温度下使本体收缩的第二加热步骤， 加热温度，第三加热步骤，在与玻璃微细玻璃微粒的玻璃化温度对应的第三温度下使收缩体玻璃化，制成玻璃预制件。

公开(公告)号：US20130243379A1

公开(公告)日：2013-09-19

申请号：US13419767

申请日：2012-03-14

申请人： Kazuhiro YONEZAWA ,  Sumio Hoshino

发明人： Kazuhiro YONEZAWA ,  Sumio Hoshino

IPC分类号： G02B6/02

CPC分类号： G02B6/03644 ,  C03B37/027 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/26 ,  G02B6/02 ,  G02B6/0288 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/29377

摘要： The present invention relates to a GI-type multi-mode optical fiber in which the outer diameter 2a of a core is 47.5 to 52.5 μm or 60 to 65 μm. In the multi-mode optical fiber, stress in the optical axis direction remaining in an outermost peripheral portion of the cladding is tensile stress of 0 to 25 MPa, the outermost peripheral portion of the cladding being defined as a region having a diameter of 1.8b or more when the diameter of the cladding is 2b.

摘要翻译： 本发明涉及一种GI型多模光纤，其中芯的外径2a为47.5至52.5μm或60至65μm。 在多模光纤中，保留在包层的最外周部的光轴方向的应力为0〜25MPa的拉伸应力，包层的最外周部被定义为直径为1.8b的区域 或更大，当包层的直径为2b时。

公开(公告)号：US06698249B1

公开(公告)日：2004-03-02

申请号：US09807372

申请日：2001-07-16

申请人： Kanta Yagi ,  Sumio Hoshino ,  Wataru Kikuchi

发明人： Kanta Yagi ,  Sumio Hoshino ,  Wataru Kikuchi

IPC分类号： C03B1914

CPC分类号： C03B37/01406 ,  C03B37/0144

摘要： An object of the present invention is to reduce the adhesion of floating glass particulates to the surface of a soot preform during the manufacture of the soot preform, thereby reducing the voids generated in the transparent glass preform made from the soot preform, and to improve the quality of the optical fiber manufactured from the transparent glass preform. The equipment of the invention is equipped with a reaction vessel 1, a burner 2 provided within the reaction vessel 1 into which raw material gas and combustion gas are supplied so as to generate glass particulates by hydrolysis reaction, and a starting rod 5 onto which the glass particulates generated by the burner 2 are deposited. By drawing up the starting rod 5 while turning it around its axis, the glass particulates are deposited on the tip of or around the starting rod 5 to form a soot preform 6 in column-like shape. The equipment is provided with a partition board 8 that separates part of the space around the soot preform 6 in the reaction vessel 1 into upper and lower parts. An exhaust port 4 is provided below the partition board 8 in the inner wall of the reaction vessel 1, and the burner 2 is installed in the space below the partition board 8.

摘要翻译： 本发明的一个目的是在烟灰预制件的制造过程中减少漂浮的玻璃微粒对烟灰预制件表面的粘附，从而减少由烟炱预制件制成的透明玻璃预制件中产生的空隙，并改善 由透明玻璃预制件制造的光纤的质量。 本发明的设备配备有反应容器1，设置在反应容器1内的燃烧器2，原料气体和燃烧气体通过水解反应而产生玻璃微粒，原料气体和燃烧气体通过水解反应产生玻璃微粒; 沉积由燃烧器2产生的玻璃微粒。 通过在绕其轴线转动的同时拉起起始杆5，玻璃颗粒沉积在起始杆5的尖端或周围，以形成柱状形状的烟灰预制件6。 该设备设置有分隔板8，其将反应容器1中的烟灰预制件6周围的空间的一部分分离成上部和下部。 排气口4设置在反应容器1的内壁的分隔板8的下方，燃烧器2安装在隔板8的下方的空间内。

公开(公告)号：US08565566B2

公开(公告)日：2013-10-22

申请号：US13253445

申请日：2011-10-05

申请人： Sumio Hoshino ,  Kazuhiro Yonezawa

发明人： Sumio Hoshino ,  Kazuhiro Yonezawa

IPC分类号： G02B6/028

CPC分类号： C03C13/046 ,  C03B37/01446 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/26 ,  C03C2201/11 ,  C03C2201/31 ,  G02B6/0281 ,  G02B6/0288

摘要： The present invention relates to a multi-mode optical fiber having a structure enabling stable production and broadening of communication bandwidth as compared with the conventional structures. The multi-mode optical fiber has a core with a diameter 2a that is doped with GeO2 and chlorine. The chlorine concentration profile in the core along the diametric direction of the multi-mode optical fiber has a shape such that the chlorine concentration at a second measurement position within a range at a distance of from 0.9 a to 1.0 a from the center of the core in the radial direction thereof is higher than the chlorine concentration at a first measurement position at a distance of a/2 from the center of the core in the radial direction thereof.

摘要翻译： 本发明涉及一种具有与常规结构相比能够稳定生产和扩大通信带宽的结构的多模光纤。 多模光纤具有掺杂有GeO 2和氯的直径为2a的芯。 核心中沿着多模光纤的直径方向的氯浓度分布具有这样的形状，使得第二测量位置处的氯浓度在距芯的中心0.9a至1.0a之间的范围内 在径向方向上的距离高于核心的径向a / 2的距离处的第一测量位置处的氯浓度。

公开(公告)号：US08011209B2

公开(公告)日：2011-09-06

申请号：US11587357

申请日：2005-11-18

申请人： Keisei Morita ,  Sumio Hoshino

发明人： Keisei Morita ,  Sumio Hoshino

IPC分类号： C03B37/075

CPC分类号： C03B37/01453 ,  C03B37/01446 ,  C03B2201/12 ,  C03B2201/31 ,  Y02P40/57

摘要： A method of making a glass is provided in which the time needed for doping a refractive index control substance such as fluorine into a soot glass deposit body can be reduced. The method comprises the steps of: (1) putting a soot glass deposit body in a container; (2) doping a refractive index control substance into the soot glass deposit body by supplying an doping gas into the container, the doping gas containing the substance; and (3) consolidating the soot glass deposit body by heating, wherein the final set-value concentration of the substance is determined beforehand depending on the target refractive index of the glass, and in step (2), the container is supplied with the doping gas including the substance having a concentration set to be higher than the final set-value concentration, and subsequently, the doping gas including the substance having the final set-value concentration is supplied into the container.

摘要翻译： 提供一种制造玻璃的方法，其中可以减少将诸如氟的折射率控制物质掺入烟灰玻璃沉积物体所需的时间。 该方法包括以下步骤：（1）将烟灰玻璃沉积体置于容器中; （2）通过向容器内供给含有该物质的掺杂气体，将折射率控制物质掺入到烟灰玻璃沉积体中; 和（3）通过加热固化烟灰玻璃沉积体，其中，物质的最终设定值浓度根据玻璃的目标折射率预先确定，并且在步骤（2）中，向容器供给掺杂物 包括浓度设定为高于最终设定值浓度的物质的气体，随后将包含具有最终设定值浓度的物质的掺杂气体供给到容器中。

公开(公告)号：US07886561B2

公开(公告)日：2011-02-15

申请号：US10516115

申请日：2003-06-17

申请人： Kiichiro Kawasaki ,  Sumio Hoshino

发明人： Kiichiro Kawasaki ,  Sumio Hoshino

IPC分类号： C03B37/012

CPC分类号： C03B37/0124 ,  C03B23/047 ,  C03B37/01242

摘要： To provide a elongating method for elongating an optical fiber parent material with high reliability by implementing a high precision control for the outer diameter in short time. This elongating method includes a process for switching a control method for at least one of the control items of measurement object, based on at least one of a difference between measured value and target value and a change rate of the difference per unit time, in measuring the outer diameter of a glass parent material elongating portion and making a feedback control for the elongating conditions based on the difference from the target outer diameter.

摘要翻译： 为了提供一种通过在短时间内对外径实施高精度控制来提高可靠性的光纤母材的伸长方法。 这种延长方法包括：根据测量对象的控制项目中的至少一个控制项目，基于测量值和目标值之间的差异以及每单位时间差异的变化率中的至少一个来切换控制方法的处理， 玻璃母材伸长部分的外径，并根据与目标外径的差异对延长条件进行反馈控制。