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1. 发明授权

US5348564A Method for manufacturing a hermetically coated optical fiber 失效
标题翻译：制造密封型光纤的方法
公开(公告)号：US5348564A
公开(公告)日：1994-09-20
申请号：US835892
申请日：1992-02-14
申请人： Haruhiko Aikawa , Katsuya Nagayama , Yoichi Ishiguro , Ichiro Yoshimura , Yutaka Katsuyama , Nobuyuki Yoshizawa
发明人： Haruhiko Aikawa , Katsuya Nagayama , Yoichi Ishiguro , Ichiro Yoshimura , Yutaka Katsuyama , Nobuyuki Yoshizawa
IPC分类号： C03C25/10 , C03C25/22 , C03B37/025
CPC分类号： C03C25/1075 , C03C25/223
摘要： An apparatus for manufacturing a hermetically coated optical fiber having a single reaction chamber into which a fare fiber and raw gas are to be introduced for applying a hermetic coating to the bare fiber while the bare fiber passes through the reaction chamber is characterized by that the reaction chamber has a plurality of inlet tubes to introduce the raw gas, and the plurality of inlet tubes open to the reaction chamber at different positions from each other in a direction of movement of the bare fiber passing through said reaction chamber.
摘要翻译：一种用于制造具有单个反应室的气密涂层光纤的装置，其中在裸光纤通过反应室的同时，将导入纤维和原料气体的空气涂层施加到裸露的纤维上，其特征在于反应室具有多个入口管以引入原料气体，并且多个入口管在通过所述反应室的裸纤维的运动方向上彼此不同的位置处朝向反应室开口。

2. 发明授权

US5281247A Method for producing hermetic coated optical fiber 失效
标题翻译：密封涂层光纤的制造方法
公开(公告)号：US5281247A
公开(公告)日：1994-01-25
申请号：US985113
申请日：1992-12-03
申请人： Haruhiko Aikawa , Yoichi Ishiguro , Katsuya Nagayama , Ichiro Yoshimura , Yutaka Katsuyama , Nobuyuki Yoshizawa
发明人： Haruhiko Aikawa , Yoichi Ishiguro , Katsuya Nagayama , Ichiro Yoshimura , Yutaka Katsuyama , Nobuyuki Yoshizawa
IPC分类号： C03C25/10 , C03C25/22 , C03C25/42 , C03B37/023
CPC分类号： C03C25/223 , C03C25/1075
摘要： A hermetic coated optical fiber is produced by preparing a bare optical fiber by melting and drawing an optical fiber preform in a fiber drawing furnace and introducing the bare optical fiber in a reactor in which a raw material gas is introduced and forming a hermetic coating film around a surface of the bare optical fiber by a chemical vapor deposition method or pyrolysis in the reactor, wherein a part of an inert gas for purging the fiber drawing furnace which has been heated by a heater equipped in the furnace is exhausted and a rest of the inert gas is introduced in the reactor for diluting the raw material gas.
摘要翻译：通过在纤维拉伸炉中熔融拉伸光纤预制件并将裸光纤引入到其中引入原料气体并形成密封涂膜的反应器中来制备密封涂层光纤裸机光纤的表面通过化学气相沉积法或反应器中的热解，其中一部分用于吹扫由在炉中装备的加热器加热的纤维拉丝炉的惰性气体被排出，其余的在反应器中引入惰性气体来稀释原料气体。

3. 发明申请

US20050259932A1 Optical fiber and a method for manufacturing same 审中-公开
标题翻译：光纤及其制造方法
公开(公告)号：US20050259932A1
公开(公告)日：2005-11-24
申请号：US10520619
申请日：2003-07-10
申请人： Katsuya Nagayama , Keisei Morita
发明人： Katsuya Nagayama , Keisei Morita
IPC分类号： C03B37/027 , C03C13/04 , G02B6/02 , G02B6/036 , G02B6/16
CPC分类号： G02B6/02 , C03B37/02718 , C03B37/02727 , C03B2201/31 , C03B2203/22 , C03B2203/23 , C03B2203/36 , C03B2205/55 , C03B2205/56 , C03C13/045 , C03C13/046 , G02B6/02261 , G02B6/02276 , G02B6/03627 , G02B6/03633 , Y02P40/57
摘要： There is prepared an optical fiber preform 2 whose core region is doped with Ge in such a quantity of dopant that the relative refractive-index difference [Ge] expressed in % with respect to pure SiO2 satisfies the condition [Ge]≧0.3%, where upon after being heat drawn with a drawing furnace 11 into an optical fiber 3, the optical fiber 3 is annealed in a heating furnace 21 downstream of the drawing furnace 11 under a condition that the cooling speed is 2000° C./second or less, and the period of annealing time is equal to or longer than the relaxation time. Further, the annealed optical fiber 3 is introduced into a cooling means 31 at an entry temperature of 700° C. or more, and the optical fiber 3 is forcibly cooled by the cooling means 31. As a consequence, there are achieved an optical fiber and a method of fabricating the same capable of fabricating the optical fiber having a reduced Rayleigh scattering loss as well as excellent hydrogen-resisting property with favorably high productivity.
摘要翻译：准备了光纤预制棒2，其核心区掺杂有这样的掺杂剂的Ge，使得相对于纯SiO 2 <2％以％表示的相对折射率差[Ge]满足条件 [Ge]> = 0.3％，其中在用拉丝炉11拉入光纤3之后，将光纤3在拉制炉11下游的加热炉21中退火，其条件是冷却速度为 2000℃/秒以下，退火时间等于或长于弛豫时间。此外，退火的光纤3在700℃以上的入口温度下被引入冷却装置31中，并且光纤3被冷却装置31强制冷却。因此，实现了能够制造具有降低的瑞利散射损耗的光纤以及优异的耐氢性能并且具有良好的高生产率的光纤及其制造方法。

4. 发明授权

US06519404B1 Method and apparatus for fabricating coated optical fiber, and coated optical fiber 有权
标题翻译：用于制造涂覆光纤和涂覆光纤的方法和装置
公开(公告)号：US06519404B1
公开(公告)日：2003-02-11
申请号：US09890166
申请日：2001-07-27
申请人： Motohide Yoshida , Katsuyuki Tsuneishi , Masao Koida , Katsuya Nagayama
发明人： Motohide Yoshida , Katsuyuki Tsuneishi , Masao Koida , Katsuya Nagayama
IPC分类号： G02B602
CPC分类号： C03B37/032 , C03B37/027 , C03B37/02745 , C03B2203/06 , C03B2203/19 , C03B2203/36 , C03B2205/06 , C03C25/12 , C03C25/18
摘要： In a fabrication method of coated optical fiber 21, the coated optical fiber 21 is fabricated by heating to soften an end of an optical fiber preform 11 to draw a glass fiber 13 out therefrom, laying coatings 16, 19 on the glass fiber 13 to make the coated optical fiber 21, and guiding the coated optical fiber 21 via a swing guide roller 23 periodically swinging, to twist the coated optical fiber 21, thereby imparting twists about the axis to the glass fiber 13 inside the coated optical fiber 21. The fabrication method comprises a step of passing the coated optical fiber 21 having passed the swing guide roller 23, through a free zone (between 26 and 27) in which the coated optical fiber 21 is allowed to freely rotate about the axis, and thereby longitudinally canceling out elastic torsion stored in the coated optical fiber 21 because of longitudinally alternate inversion of twist directions thereof, wherein a zone length L (m) of the free zone is not less than Lo (m) defined as follows: Lo (m)=[a maximum drawing speed of the coated optical fiber (m/min)]/[the number of clockwise and counterclockwise swing motions per unit time of the swing guide roller (motions/min)].
摘要翻译：在涂覆光纤21的制造方法中，通过加热来制造涂覆光纤21，以软化光纤预制棒11的端部，从中拉出玻璃纤维13，将玻璃纤维13上涂覆涂层16,19 涂布光纤21，经由摆动导向辊23周期性摆动地引导被覆光纤21，使被覆光纤21扭曲，从而使被覆光纤21内的玻璃纤维13绕轴线扭曲。方法包括使已经通过摆动引导辊23的涂覆光纤21通过允许涂覆光纤21绕轴线自由旋转的自由区（26和27之间）的步骤，从而纵向消除由于其扭转方向的纵向交替反转，存储在涂覆光纤21中的弹性扭转，其中自由区的区段长度L（m）不小于如下定义的Lo（m）：Lo（m）= [涂覆光纤的最大拉伸速度（m / min）] / [摆动导辊的每单位时间的顺时针和逆时针摆动运动的数量（运动/分钟）]。

5. 发明授权

US5472128A Method and apparatus for sucking an optical fiber 失效
标题翻译：吸收光纤的方法和装置
公开(公告)号：US5472128A
公开(公告)日：1995-12-05
申请号：US123841
申请日：1993-09-09
申请人： Katsuya Nagayama , Toshifumi Hosoya
发明人： Katsuya Nagayama , Toshifumi Hosoya
IPC分类号： B65H54/88 , B65H63/036 , B65H63/06 , B65H65/00 , G01M11/08 , G02B6/44 , B65H20/00
CPC分类号： B65H57/003 , B65H54/88 , B65H63/036 , B65H63/06 , B65H65/00 , G01M11/088 , G02B6/4457 , B65H2701/32
摘要： A method and apparatus for sucking a free end of an optical fiber includes a sucking nozzle. The sucking nozzle is positioned downstream of a capstan wheel around which the optical fiber is wound. The opening of the sucking nozzle is positioned within a range of movement of a path line of the free end of the optical fiber. The path line of the end of the optical fiber moves in accordance with the speed of travel of the optical fiber. The sucking nozzle is positioned perpendicular to a plane defined by the path line of movement of the end of the optical fiber and transverse to an axis of the capstan. Thus, the sucking nozzle is positioned to reliably suck a free end of the optical fiber for a broad range of speeds of the optical fiber.
摘要翻译：用于吸入光纤自由端的方法和装置包括吸嘴。吸嘴位于卷绕在光纤周围的绞盘轮的下游。吸嘴的开口位于光纤的自由端的路径线的移动范围内。光纤端部的路径线根据光纤的行进速度而移动。吸嘴位于垂直于由光纤端部的运动路线所限定的平面并横向于主导轴的轴线。因此，吸引喷嘴被定位成在光纤的宽范围的速度下可靠地吸收光纤的自由端。

6. 发明申请

US20060101861A1 Optical fiber making apparatus and method 审中-公开
标题翻译：光纤制造装置及方法
公开(公告)号：US20060101861A1
公开(公告)日：2006-05-18
申请号：US11245095
申请日：2005-10-07
申请人： Katsuya Nagayama , Tatsuhiko Saitoh , Yuichi Ohga , Kazuya Kuwahara
发明人： Katsuya Nagayama , Tatsuhiko Saitoh , Yuichi Ohga , Kazuya Kuwahara
IPC分类号： C03B37/029
摘要： A drawing apparatus 1 comprises a drawing furnace 11, a heating furnace 21, and a resin curing section 31. An optical fiber 3 drawn upon heating in the drawing furnace 11 is sent to a heating furnace 21, where a predetermined part of the optical fiber 3 is annealed at a predetermined cooling rate. The temperature of a heater 22 of the heating furnace 21 at the furnace center is set to a temperature within the range from 1200 to 1600° C. Thereafter, the optical fiber 3 is coated with a UV resin liquid 52 by a coating die 51, and the UV resin 52 is cured in the resin curing section 31, so as to yield a coated optical fiber 4.
摘要翻译：拉伸装置1包括拉丝炉11，加热炉21和树脂固化部31。将在拉丝炉11中加热而拉制的光纤3送入加热炉21，在加热炉21中，光纤3的规定部分以规定的冷却速度进行退火。炉中心的加热炉21的加热器22的温度设定在1200〜1600℃的温度范围内。此后，通过涂布模51将光纤3涂覆有紫外线树脂液52，并且在树脂固化部分31中固化UV树脂52，以产生涂覆的光纤4。

7. 发明授权

US06935139B2 Method of manufacturing optical fiber 有权
标题翻译：制造光纤的方法
公开(公告)号：US06935139B2
公开(公告)日：2005-08-30
申请号：US10143925
申请日：2002-05-14
申请人： Katsuya Nagayama , Kazuya Kuwahara , Takayuki Shimazu
发明人： Katsuya Nagayama , Kazuya Kuwahara , Takayuki Shimazu
IPC分类号： G02B6/00 , C03B37/027 , C03B37/029
CPC分类号： C03B37/029 , C03B37/027 , C03B37/02718 , C03B2205/56 , C03B2205/63 , Y02P40/57
摘要： The method of manufacturing an optical fiber in accordance with the present invention comprises a step of yielding an optical fiber by drawing an optical fiber preform softened upon heating, wherein a temperature at which the optical fiber preform is softened is at least 1800° C., whereas the optical fiber preform or optical fiber has a glass cooling rate of 4000° C./sec or less when attaining a temperature of 1800° C.
摘要翻译：根据本发明的制造光纤的方法包括通过拉伸在加热时软化的光纤预制棒来产生光纤的步骤，其中光纤预制件软化的温度为至少1800℃，而当达到1800℃的温度时，光纤预制棒或光纤的玻璃冷却速度为4000℃/秒以下。

8. 发明授权

US06928840B1 Optical fiber producing method 有权
标题翻译：光纤生产方法
公开(公告)号：US06928840B1
公开(公告)日：2005-08-16
申请号：US10089719
申请日：2000-10-11
申请人： Katsuya Nagayama , Yuichi Ohga , Kazuya Kuwahara , Ichiro Tsuchiya
发明人： Katsuya Nagayama , Yuichi Ohga , Kazuya Kuwahara , Ichiro Tsuchiya
IPC分类号： C03B37/027 , C03B37/029 , G02B6/00 , C03B37/025 , C03B37/03
CPC分类号： C03B37/02718 , C03B37/029 , C03B2205/56 , C03B2205/82 , C03B2205/83 , C03B2205/90
摘要： A drawing apparatus 1 comprises a drawing furnace 11, a protecting tube 21, and a resin curing unit 31. A buffer chamber 41 is disposed between the drawing furnace 11 and the protecting tube 21, and has a length L1 in the drawing direction of the optical fiber 3. The buffer chamber 41 is constituted by a first buffer cell 42 and a second buffer cell 45. In the space within the buffer chamber 41, an He gas, which is an atmosphere gas within the drawing furnace 11, and the air, which is an atmosphere gas within the protecting tube 21, exist in a mixed state. The optical fiber 3 drawn upon heating in the drawing furnace 11 is fed to the protecting tube 21, and a predetermined part of the optical fiber 3 is annealed at a predetermined cooling rate. Thereafter, a coating die 62 coats the optical fiber 3 with a UV resin solution 63, and the resin curing unit 31 cures the UV resin 63, whereby a coated optical fiber 4 is obtained.
摘要翻译：拉制装置1包括拉丝炉11，保护管21和树脂固化单元31。缓冲室41设置在拉丝炉11和保护管21之间，并且在光纤3的拉伸方向上具有长度L 1。缓冲室41由第一缓冲单元42和第二缓冲单元45构成。在缓冲室41内的空间内，作为吸入炉11内的气氛气体的He气体和作为保护管21内的气氛气体的空气以混合状态存在。在拉丝炉11中加热拉制的光纤3被送入保护管21，光纤3的规定部分以规定的冷却速度进行退火。此后，涂布模具62用UV树脂溶液63涂覆光纤3，树脂固化单元31固化UV树脂63，从而获得涂覆的光纤4。

9. 发明授权

US06681072B2 Optical fiber, method of making optical fiber preform, and method of making optical fiber 有权
公开(公告)号：US06681072B2
公开(公告)日：2004-01-20
申请号：US09939741
申请日：2001-08-28
申请人： Katsuya Nagayama , Kiichiro Kawasaki , Takatoshi Kato
发明人： Katsuya Nagayama , Kiichiro Kawasaki , Takatoshi Kato
IPC分类号： G02B602
CPC分类号： G02B6/03655 , C03B37/01413 , C03B37/01446 , C03B37/02718 , C03B37/029 , C03B2201/12 , C03B2201/20 , C03B2203/22 , C03B2205/56 , C03B2207/30 , C03C13/04 , G02B6/0281 , G02B6/0286 , G02B6/03627 , G02B6/03644 , Y02P40/57
摘要： An optical fiber comprising a core region 100 doped with Cl which raises the refractive index; and a cladding region 200, provided at the outer periphery of the core region 100, having a cladding layer 201 doped with F which lowers the refractive index is formed. The cladding region 201 to become the outermost cladding layer is configured such that the doping amount of F successively decreases within an outer peripheral part 205 including the outer periphery thereof to a predetermined doping amount which is the minimum doping amount of F within the cladding layer 201. Therefore, the stress within the optical fiber is dispersed into the outer peripheral part 205 having an enhanced viscosity, whereby the stress concentration into the core is suppressed. Since the favorable tension range at the time of drawing the optical fiber becomes wider at this time, tension control is facilitated.

10. 发明授权

US06502428B1 Manufacturing method of an optical fiber 失效
标题翻译：光纤的制造方法
公开(公告)号：US06502428B1
公开(公告)日：2003-01-07
申请号：US09698280
申请日：2000-10-30
申请人： Masashi Onishi , Kazuya Kuwahara , Katsuya Nagayama
发明人： Masashi Onishi , Kazuya Kuwahara , Katsuya Nagayama
IPC分类号： C03B3707
CPC分类号： G02B6/03666 , C03B37/0253 , C03B2203/18 , C03B2203/36 , C03B2205/40 , C03B2205/72 , G02B6/02271 , G02B6/0283 , G02B6/03627
摘要： A manufacturing method of an optical fiber, which enables to precisely manufacture the optical fiber having a desired chromatic dispersion, comprising: (1) preparing an optical fiber preform having a longitudinally uniform refractive index, (2) measuring the chromatic dispersion of a predetermined length of the optical fiber obtained at the beginning of the drawing, (3) according to the results of such measurement, estimating the chromatic dispersion characteristic of the optical fiber obtained by drawing the optical fiber preform, and commencing the drawing of the optical fiber preform. To achieve the target chromatic dispersion diameter of the optical fiber is determined according to the chromatic dispersion that is measured with respect to a predetermined length of an optical fiber obtained at the beginning of the drawing of an optical fiber preform. Then, the remainder of the optical fiber preform is drawn to produce an optical fiber having the desired chromatic dispersion.
摘要翻译：一种光纤制造方法，其能够精确地制造具有期望的色散的光纤，包括：（1）制备具有纵向均匀折射率的光纤预制棒，（2）测量预定长度的色散，（3）根据这种测量结果，估计通过拉制光纤预制棒而获得的光纤的色散特性，并开始拉伸光纤预制棒。根据在光纤预制件的绘制开始时获得的光纤的预定长度测量的色散来确定实现光纤的目标色散直径。然后，拉出光纤预制件的其余部分，以产生具有所需色散的光纤。

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