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1. 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。

2. 发明授权

US06400878B1 Optical fiber and method of making the same 有权
标题翻译：光纤及其制作方法
公开(公告)号：US06400878B1
公开(公告)日：2002-06-04
申请号：US09939742
申请日：2001-08-28
申请人： Katsuya Nagayama , Yuichi Ohga , Tatsuhiko Saitoh , Shinji Ishikawa , Ichiro Tsuchiya , Takenori Uchiyama
发明人： Katsuya Nagayama , Yuichi Ohga , Tatsuhiko Saitoh , Shinji Ishikawa , Ichiro Tsuchiya , Takenori Uchiyama
IPC分类号： G02B602
CPC分类号： G02B6/03627 , C03B37/02718 , C03B37/029 , C03B37/15 , C03B2201/12 , C03B2201/20 , C03B2201/31 , C03B2203/22 , C03B2205/56 , C03C13/04 , G02B6/02
摘要： An optical fiber preform 2 having a viscosity ratio R&eegr;=&eegr;0/&eegr;t of 2.5 or less between the core average viscosity &eegr;0 and the total average viscosity &eegr;t is prepared, and is drawn by a drawing furnace 11 so as to yield an optical fiber 3, which is then heated to a temperature within a predetermined range so as to be annealed by a heating furnace 21 disposed downstream the drawing furnace 11. Here, upon annealing in the heating furnace 21, the fictive temperature Tf within the optical fiber lowers, thereby reducing the Rayleigh scattering loss. At the same time, the viscosity ratio condition of R&eegr;≦2.5 restrains the stress from being concentrated into the core, thereby lowering the occurrence of structural asymmetry loss and the like. Hence, an optical fiber which can reduce the transmission loss caused by the Rayleigh scattering loss and the like as a whole, and a method of making the same can be obtained.
摘要翻译：准备在芯平均粘度eta0与总平均粘度etat之间具有2.5或更小的粘度比Reta = eta0 / etat的光纤预制棒2，并由拉丝炉11拉伸以产生光纤3，然后将其加热到预定范围内的温度，以便通过设置在拉丝炉11下游的加热炉21进行退火。这里，在加热炉21中退火后，光纤内的假想温度Tf降低，从而降低瑞利散射损失。同时，Reta <= 2.5的粘度比条件限制了应力集中到芯中，从而降低了结构不对称损失的发生等。因此，可以获得可以降低由瑞利散射损耗等引起的传输损耗等的整体的光纤及其制造方法。

3. 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。

4. 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。

5. 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。

6. 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。

7. 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。

8. 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）]。

9. 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。

10. 发明授权

US06892019B2 Optical fiber, method of making optical fiber preform, and method of making optical fiber 有权
标题翻译：光纤，制造光纤预制棒的方法以及制造光纤的方法
公开(公告)号：US06892019B2
公开(公告)日：2005-05-10
申请号：US10747092
申请日：2003-12-30
申请人： Katsuya Nagayama , Kiichiro Kawasaki , Takatoshi Kato
发明人： Katsuya Nagayama , Kiichiro Kawasaki , Takatoshi Kato
IPC分类号： C03B37/014 , C03B37/027 , C03B37/029 , G02B6/036 , G02B6/02
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.
摘要翻译：一种光纤，包括掺杂有Cl的芯区域100，其提高折射率; 以及设置在芯区域100的外周的包层区域200，其具有掺杂有F的包层201，其折射率降低。构成为最外包层的包层区域201构成为使F的掺杂量在包含外周的外周部205内依次减少为包层201内的F的最小掺杂量的规定的掺杂量。因此，光纤内的应力被分散到具有增强的粘度的外周部分205中，从而抑制了芯中的应力集中。此时，由于拉伸光纤时的有利的拉伸范围变宽，因此容易进行张力控制。

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