公开(公告)号：US20120304701A1

公开(公告)日：2012-12-06

申请号：US13484282

申请日：2012-05-31

Applicant: Dai INOUE

Inventor： Dai INOUE

IPC: C03B37/018

CPC classification number: C03B37/01446 ,  C03B37/01453 ,  C03B2201/12 ,  G02B6/0283 ,  G02B6/0365

Abstract: Provided is a method for manufacturing an optical fiber base material, comprising manufacturing a soot deposition body having a core with a high refractive index at a center thereof, using VAD or OVD; dehydrating the soot deposition body within a heating furnace, with a temperature that does not vitrify the soot deposition body and in a helium atmosphere containing chlorine; after the dehydration, forming a core rod by vitrifying the soot deposition body at a temperature that vitrifies the soot deposition body, in a helium atmosphere; and applying cladding on the outside of the core rod. The helium atmosphere in the heating furnace when vitrifying the soot deposition body includes a gas containing a fluorine compound, and concentration of the fluorine in the atmospheric gas is in a range of 0.1 mol % to 10 mol %.

Abstract translation: 本发明提供一种光纤基材的制造方法，其特征在于，使用VAD或OVD，制造在中心具有高折射率的芯的烟灰沉积体; 使烟炱沉积体在加热炉内脱水，其中不会使烟炱沉积体和含氯气的氦气中的玻璃化温度; 在脱水之后，在氦气氛中通过在烟炱沉积体的玻璃化的温度下使烟炱沉积体玻璃化来形成芯棒; 并在芯棒的外侧施加包层。 当对烟灰沉积体进行玻璃化时，加热炉中的氦气体包括含氟化合物的气体，并且气氛中的氟浓度在0.1mol％至10mol％的范围内。

公开(公告)号：US20100011813A1

公开(公告)日：2010-01-21

申请号：US12504414

申请日：2009-07-16

Applicant: Dai INOUE ,  Takaaki Nagao ,  Hiroyuki KOIDE

Inventor： Dai INOUE ,  Takaaki Nagao ,  Hiroyuki KOIDE

IPC: C03B18/20 ,  C03B5/24

CPC classification number: C03B37/01413 ,  C03B37/0142 ,  C03B2201/02 ,  C03B2201/31 ,  C03B2207/36 ,  C03B2207/70 ,  C03B2207/85 ,  C03B2207/87 ,  Y02P40/57

Abstract: Provided is a quartz glass manufacturing method that involves using one or more burners, supplying hydrogen and oxygen to the one or more burners to generate an oxyhydrogen flame, introducing a silicide into the oxyhydrogen flame, forming a porous base material by depositing silicon dioxide generated from a flame hydrolysis reaction with the silicide, and heating and sintering the porous base material to form transparent glass, the method comprising supplying hydrogen that is stored or made at a normal temperature to the one or more burners; controlling a hydrogen flow rate using a measurement apparatus or control apparatus that performs measurement based on heat capacity of a gas; vaporizing liquid hydrogen stored in a low-temperature storage chamber, and supplying the vaporized liquid hydrogen to the one or more burners as backup hydrogen; switching from the hydrogen to the backup hydrogen; and when switching, adjusting the hydrogen flow rate to a value obtained by multiplying the hydrogen flow rate immediately after switching by a predetermined correction coefficient.

Abstract translation: 提供了一种石英玻璃制造方法，其包括使用一个或多个燃烧器，向一个或多个燃烧器供应氢气和氧气以产生氢氧焰，将硅化物引入氢氧焰中，通过沉积二氧化硅形成多孔基材， 与所述硅化物进行火焰水解反应，以及加热和烧结所述多孔基材以形成透明玻璃，所述方法包括将在常温下储存或制造的氢气供应给所述一个或多个燃烧器; 使用基于气体的热容量进行测量的测量装置或控制装置控制氢气流量; 蒸发存储在低温储存室中的液态氢，并将蒸发的液体氢气作为备用氢气供给到一个或多个燃烧器; 从氢气切换到备用氢气; 并且当切换时，将氢气流量调节到通过将切换之后的氢气流量乘以预定校正系数而获得的值。

公开(公告)号：US20120186303A1

公开(公告)日：2012-07-26

申请号：US13357620

申请日：2012-01-25

Applicant: Dai INOUE

Inventor： Dai INOUE

IPC: C03B37/012 ,  B32B1/08

CPC classification number: C03B37/01228 ,  C03B37/01466 ,  Y02P40/57 ,  Y10T428/131

Abstract: A method for manufacturing an optical fiber preform that includes preparing a glass cylinder with inner and outer surfaces forming at least part of a cladding portion are repeatedly polished, and a glass core rod that includes a core portion having a higher refractive index than the cladding portion; and inserting the core rod into the glass cylinder and heating the glass cylinder and core rod to form a single body. The repeated polishing of the inner surface of the glass cylinder includes passing pure water that does not contain a cutting fluid over the inner surface for at least the final polishing. The polishing is preferably performed using a polishing cloth to which are affixed diamond abrasive grains. The glass core rod and the glass cylinder are preferably formed of composite quartz glass.

Abstract translation: 一种光纤预制棒的制造方法，其特征在于，包括准备形成有包覆部的至少一部分的内外表面的玻璃圆筒的方法，其特征在于，包括具有比包层部折射率高的芯部的玻璃芯棒 ; 并将芯棒插入玻璃圆筒中并加热玻璃圆筒和芯棒以形成单体。 对玻璃圆筒的内表面的重复抛光包括将不含切削液的纯水通过内表面进行至少最终抛光。 抛光优选使用附着有金刚石磨粒的抛光布进行。 玻璃芯棒和玻璃圆筒优选由复合石英玻璃形成。

公开(公告)号：US20110107797A1

公开(公告)日：2011-05-12

申请号：US13006311

申请日：2011-01-13

Applicant: Dai INOUE ,  Takaaki NAGAO ,  Hiroyuki KOIDE

Inventor： Dai INOUE ,  Takaaki NAGAO ,  Hiroyuki KOIDE

IPC: C03B37/018 ,  G02B6/02

CPC classification number: C03B37/01413 ,  C03B37/014 ,  C03B2201/31 ,  C03B2207/70 ,  Y02P40/57

Abstract: An optical fiber base material manufacturing method includes: supplying oxygen, hydrogen, and silicide to a core deposition burner; depositing silicon dioxide; adjusting a drawing up speed so that a deposition tip position remains at the same position in accordance with growth of a porous base material; calculating an average of the drawing up speed at each preset time interval; calculating a difference of the calculated average from a preset value of the drawing up speed; correcting a flow rate of silicon tetrachloride when the supplied hydrogen is hydrogen produced or stored at normal temperature, and correcting a flow rate of hydrogen when the supplied hydrogen is hydrogen obtained by vaporizing liquid hydrogen, where when correcting the flow rate of hydrogen, a flow rate of hydrogen supplied to a cladding deposition burner is also corrected in a ratio of before and after the correction of the flow rate of the hydrogen.

Abstract translation: 一种光纤母材的制造方法，其特征在于，包括向氧化铁沉积燃烧器供给氧，氢，硅化物; 沉积二氧化硅; 调整拉拔速度，使得沉积尖端位置根据多孔基材的生长保持在相同的位置; 在每个预设时间间隔内计算绘图速度的平均值; 计算出计算出的平均值与绘图速度的预设值的差; 当供应的氢气在常温下产生或储存氢气时，校正四氯化硅的流量，并且当通过蒸发液态氢获得所供应的氢气为氢时校正氢气的流量，其中当校正氢气的流量时，流量 提供给包层沉积燃烧器的氢气的速率也以氢的流量校正之前和之后的比率进行校正。

公开(公告)号：US20100209859A1

公开(公告)日：2010-08-19

申请号：US12706646

申请日：2010-02-16

Applicant: Dai INOUE ,  Takaaki NAGAO ,  Hiroyuki KOIDE

Inventor： Dai INOUE ,  Takaaki NAGAO ,  Hiroyuki KOIDE

IPC: F23N1/00

CPC classification number: C03B37/01413

Abstract: There is provided an apparatus for supplying a hydrogen gas to a quartz glass manufacturing apparatus including a burner that generates an oxyhydrogen flame when supplied with the hydrogen gas, where the apparatus includes: a first hydrogen supply system that supplies a hydrogen gas in which isotopes are in equilibrium; a second hydrogen supply system that supplies a hydrogen gas in which isotopes are out of equilibrium; a flow rate control section that includes: a valve that changes a flow rate of the hydrogen gas to be supplied to the burner; a first flow rate measuring section that measures the flow rate of the hydrogen gas to be supplied to the burner by measuring a heat capacity; and a control section that controls the valve in such a manner that a measured value obtained by the first flow rate measuring section approaches a set value input from outside; a second flow rate measuring section that measures the flow rate of the hydrogen gas to be supplied to the burner by measuring a different factor than the heat capacity; and a set value compensating section that compensates the set value by multiplying the set value by a ratio between the measured value obtained by the first flow rate measuring section and a measured value obtained by the second flow rate measuring section.

Abstract translation: 提供了一种用于向包括在供给氢气时产生氢氧焰的燃烧器的石英玻璃制造装置供给氢气的装置，该装置包括：第一供氢系统，其供给同位素为 平衡 提供其中同位素不平衡的氢气的第二氢气供应系统; 流量控制部，其包括：阀，其改变供给到所述燃烧器的氢气的流量; 第一流量测量部，其通过测量热容量来测量供给到燃烧器的氢气的流量; 以及控制部，其以使得由所述第一流量测量部获得的测量值接近从外部输入的设定值的方式控制所述阀; 第二流量测量部，其通过测量不同于所述热容的因子来测量供给到所述燃烧器的氢气的流量; 以及设定值补偿部，其通过将所述设定值乘以由所述第一流量测量部获得的测量值与由所述第二流量测量部获得的测量值之间的比率来补偿所述设定值。

公开(公告)号：US20080236203A1

公开(公告)日：2008-10-02

申请号：US11963027

申请日：2007-12-21

Applicant: Dai INOUE

Inventor： Dai INOUE

IPC: C03B37/018

CPC classification number: G02B6/02 ,  C03C13/047 ,  C03C25/607

Abstract: Included are monitoring a loss value of the optical fiber with respect to propagation light having a wavelength at or in the vicinity of 1714 nm after the optical fiber is exposed to deuterium; and ending the exposure of the optical fiber to the deuterium when a change quantity of the loss value has exceeded a predetermined value. The monitoring of the loss value is pursued by, while exposing the optical fiber to an atmosphere that contains deuterium, causing propagation light having a wavelength at or in the vicinity of 1714 nm to be incident from one end of the optical fiber, monitoring the propagation light emitted from the other end of the optical fiber, and measuring a loss value of the optical fiber. According to this, it is possible to manufacture an optical fiber having an excellent hydrogen resistance characteristic assuredly and at low cost.

Abstract translation: 包括在光纤暴露于氘之后监测光纤相对于具有在1714nm附近或附近的波长的传播光的损耗值; 并且当损失值的变化量超过预定值时，结束光纤到氘的曝光。 通过在将光纤暴露于含有氘的气氛的同时使得具有波长为1714nm或其附近的波长的传播光从光纤的一端入射而追踪损耗值的监视，监视传播 从光纤的另一端发射的光，并测量光纤的损耗值。 据此，能够以低成本可靠地制造具有优异的耐氢特性的光纤。