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1. 发明授权

US6050108A Method for producing glass preform 有权
标题翻译：制造玻璃预制棒的方法
公开(公告)号：US6050108A
公开(公告)日：2000-04-18
申请号：US149105
申请日：1998-09-08
申请人： Tomohiro Ishihara , Yuichi Ohga , Satoshi Tanaka
发明人： Tomohiro Ishihara , Yuichi Ohga , Satoshi Tanaka
IPC分类号： G02B6/00 , B01D19/00 , C03B37/014 , C03B19/06
CPC分类号： C03B37/01446 , C03B37/0146
摘要： A method for producing a glass preform by synthesizing a porous glass preform by a vapor-phase synthesizing method and heating said porous glass preform in a vacuum or reduced-pressure atmosphere so as to consolidate said porous glass preform, which comprises the steps of: a first step of degassing said porous glass preform to thereby remove gas adsorbed or contained therein; a second step of temporarily contracting said porous glass preform at a temperature higher than a temperature in the first step and lower than a consolidation temperature; and a third step of consolidating said porous glass preform at the consolidation temperature; the degassing of said first step is determined in accordance with the bulk density of said porous glass preform.
摘要翻译：一种通过气相合成法合成多孔玻璃预成型体并在真空或减压气氛中加热所述多孔玻璃预制件以固结所述多孔玻璃预制件的方法，该方法包括以下步骤：对所述多孔玻璃预制体进行脱气以除去吸附或包含在其中的气体的第一步骤; 在高于第一步骤中的温度并低于固化温度的温度下临时收缩所述多孔玻璃预制件的第二步骤; 以及在固结温度下固化所述多孔玻璃预制件的第三步骤; 所述第一步骤的脱气是根据所述多孔玻璃预制件的体积密度来确定的。

2. 发明授权

US07194171B2 Dispersion compensating optical fiber, dispersion compensating device, optical transmission line and optical transmission system 有权
标题翻译：色散补偿光纤，色散补偿装置，光传输线路和光传输系统
公开(公告)号：US07194171B2
公开(公告)日：2007-03-20
申请号：US10401606
申请日：2003-03-31
申请人： Masao Tsukitani , Eisuke Sasaoka , Eiji Yanada , Yuichi Ohga
发明人： Masao Tsukitani , Eisuke Sasaoka , Eiji Yanada , Yuichi Ohga
IPC分类号： G02B6/02
CPC分类号： G02B6/03644 , G02B6/02004 , G02B6/02242 , G02B6/02261 , G02B6/03627
摘要： A dispersion compensating optical fiber comprises a minimum wavelength at which an increase amount of an actual loss value with respect to a theoretical loss value is not less than 10 mdB/km in a use wavelength band and on a long wavelength side of the use wavelength band. The actual loss value is measured in a state that the fiber is looped around a bobbin. The minimum wavelength falls within a range of 1,565 to 1,700 nm. This dispersion compensating optical fiber is suitably used for an optical transmission line of a large-capacity high-speed WDM optical transmission system.
摘要翻译：色散补偿光纤包括在使用波长带和使用波长带的长波长侧的实际损耗值相对于理论损耗值的增加量不小于10mdB / km的最小波长。实际损耗值是在纤维环绕绕线管的状态下测量的。最小波长在1,565至1,700nm的范围内。该色散补偿光纤适用于大容量高速WDM光传输系统的光传输线路。

3. 发明授权

US06851282B2 Apparatus and method for making optical fiber 有权
标题翻译：光纤制造装置及方法
公开(公告)号：US06851282B2
公开(公告)日：2005-02-08
申请号：US09991820
申请日：2001-11-26
申请人： Katsuya Nagayama , Yuichi Ohga , Tatsuhiko Saitoh , Hiroshi Takamizawa
发明人： Katsuya Nagayama , Yuichi Ohga , Tatsuhiko Saitoh , Hiroshi Takamizawa
IPC分类号： C03B37/027 , C03B37/029 , C03B37/02 , C03B37/10
CPC分类号： C03B37/02718 , C03B37/029 , C03B2205/40 , C03B2205/56 , C03B2205/90
摘要： A drawing apparatus 1 has a drawing furnace 11, a heating furnace 21, and a resin curing section 31. The drawing furnace 11 has a muffle tube 13 to which an He gas supply passage 15 from an He gas supply section 14 is connected so as to supply He gas. The optical fiber 3 drawn upon heating by the drawing furnace 11 is fed to the heating furnace 21, whereby a predetermined part of the optical fiber 3 is annealed at a predetermined cooling rate. The heating furnace 21 has a muffle tube 23 to which an N2 gas supply passage 25 from an N2 gas supply section 24 is connected so as to supply N2 gas. Thereafter, the optical fiber 3 is coated with a UV resin 39 by a coating die 38, and the UV resin 39 is cured in the resin curing section 31, whereby a coated optical fiber 4 is formed.
摘要翻译：拉制装置1具有拉丝炉11，加热炉21和树脂固化部31.拉拔炉11具有马弗管13，从He气供给部14连接有He气体供给路15，供应他天然气。通过拉丝炉11加热而拉制的光纤3被送入加热炉21，由此光纤3的预定部分以预定的冷却速度退火。加热炉21具有马弗管23，从N 2气体供给部24连接有N 2气体供给路25，供给N 2气体。此后，通过涂布模具38将光纤3涂覆有UV树脂39，并且在树脂固化部分31中固化UV树脂39，从而形成涂覆的光纤4。

4. 发明授权

US06705772B2 Optical fiber splicing method and optical fiber 有权
标题翻译：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。

5. 发明授权

US5674305A Method for flame abrasion of glass preform 失效
标题翻译：玻璃预制件的火焰磨损方法
公开(公告)号：US5674305A
公开(公告)日：1997-10-07
申请号：US498425
申请日：1995-07-05
申请人： Yuichi Ohga , Susumu Uchida
发明人： Yuichi Ohga , Susumu Uchida
IPC分类号： C03B29/02 , C03B37/014 , C03B37/07 , G02B6/00 , C03B37/027
CPC分类号： C03B37/01446 , C03B29/02 , C03B37/01466
摘要： The present invention relates to a process wherein a large glass preform is flame abraded to have a clear and smooth surface. In particular, the present invention pertains to a method for flame abrading a surface of a rotating glass preform by an oxyhydrogen flame which moves along a length of the glass preform, in which a movement velocity of the oxyhydrogen flame or a flow rate of oxyhydrogen of the oxyhydrogen flame is varied to conduct the flame abrasion treatment.
摘要翻译：本发明涉及一种方法，其中大玻璃预制件被火焰磨损以具有透明和光滑的表面。特别地，本发明涉及一种用于通过沿着玻璃预成型件的长度移动的氢氧焰火焰研磨旋转的玻璃预制件的表面的方法，其中氢氧焰的移动速度或氢氧的流速改变氧氢火焰进行火焰磨损处理。

6. 发明申请

US20080107385A1 Optical Fiber And Manufacturing Method Thereof 有权
标题翻译：光纤及其制造方法
公开(公告)号：US20080107385A1
公开(公告)日：2008-05-08
申请号：US10556946
申请日：2004-05-18
申请人： Yuichi Ohga , Masashi Onishi , Osamu Kasuu , Shuichiro Kato , Toru Adachi , Takashi Sasaki , Masaaki Hirano
发明人： Yuichi Ohga , Masashi Onishi , Osamu Kasuu , Shuichiro Kato , Toru Adachi , Takashi Sasaki , Masaaki Hirano
IPC分类号： G02B6/02 , C03B37/027
CPC分类号： C03B37/01228 , C03B37/01211 , C03B37/01231 , C03B37/01248 , C03B37/02754 , Y02P40/57
摘要： A core rod is inserted into a cladding pipe, moisture in a space between the core rod and the cladding pipe is removed, and an optical fiber is drawn while the space is connected to a dry-gas atmosphere and/or being decompressed and while the core rod and the cladding pipe are being unified with each other. Alternatively, the core rod is inserted into the cladding pipe, and an optical fiber is drawn from one end while moisture on the surface of the core rod and the internal surface of the cladding pipe is being removed. Accordingly, a high quality optical fiber is manufactured with good productivity.
摘要翻译：将芯棒插入包层管中，去除芯棒和包层管之间的空间中的水分，并且在空间连接到干燥气体气氛和/或减压的同时拉出光纤，同时芯棒和包层管彼此统一。或者，将芯棒插入到包层管中，并且从一端抽出光纤，同时除去芯棒的表面和包层管的内表面上的水分。因此，以高生产率制造高品质的光纤。

7. 发明授权

US06324871B1 Process for producing optical fiber preform 有权
标题翻译：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。

8. 发明授权

US5755849A Method for elongating glass preform 失效
标题翻译：拉伸玻璃预制件的方法
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。

9. 发明授权

US5674306A Method and apparatus for drawing glass preform for optical fiber 失效
标题翻译：用于制作光纤玻璃预制件的方法和装置
公开(公告)号：US5674306A
公开(公告)日：1997-10-07
申请号：US370233
申请日：1995-01-09
申请人： Sumio Hoshino , Toshio Danzuka , Yuichi Ohga , Katsuzo Mukai
发明人： Sumio Hoshino , Toshio Danzuka , Yuichi Ohga , 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。

10. 发明授权

US5513983A Apparatus for vitrifying soot preform for optical fiber 失效
标题翻译：玻璃化用于光纤的烟灰预制件的装置
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。

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