公开(公告)号：US07596292B2

公开(公告)日：2009-09-29

申请号：US11289335

申请日：2005-11-30

申请人： Takahiro Hamada ,  Kenji Yamashiro ,  Munehisa Fujimaki ,  Koichi Harada ,  Yukinari Shirako ,  Hiroyuki Sawano ,  Shunichirou Hirafune

发明人： Takahiro Hamada ,  Kenji Yamashiro ,  Munehisa Fujimaki ,  Koichi Harada ,  Yukinari Shirako ,  Hiroyuki Sawano ,  Shunichirou Hirafune

IPC分类号： G02B6/02

CPC分类号： C03C25/607 ,  C03C3/06 ,  C03C2201/22 ,  C03C2203/54 ,  G02B6/02

摘要： A treatment method for an optical fiber including accommodating an optical fiber inside a treatment chamber; introducing a deuterium containing gas into the treatment chamber; and in a deuterium treatment step, exposing the optical fiber to atmosphere of the deuterium containing gas. In the deuterium treatment step, a deuterium concentration D in the treatment chamber during the deuterium treatment is calculated from an initial value A of a deuterium concentration in the deuterium containing gas inside the treatment chamber, a concentration B of oxygen in an ambient atmosphere of the treatment chamber, and a concentration C of oxygen in the deuterium containing gas inside the treatment chamber, and the deuterium concentration in the treatment chamber is controlled based on the deuterium concentration D calculated. Other gases such as hydrogen containing gas or nitrogen containing gas may also be used according to the invention.

摘要翻译： 一种光纤的处理方法，包括在处理室内容纳光纤; 将含氘气体引入处理室中; 并且在氘处理步骤中，将光纤暴露于含氘气体的气氛中。 在氘处理工序中，从处理室内的含氘气体中的氘浓度的初始值A计算氘处理时的处理室中的氘浓度D，在室温下的氧气浓度B 处理室内的含氘气体中的氧浓度C和处理室中的氘浓度基于计算出的氘浓度D进行控制。 根据本发明，也可以使用其它气体，例如含氢气体或含氮气体。

公开(公告)号：US20060233502A1

公开(公告)日：2006-10-19

申请号：US11455690

申请日：2006-06-20

申请人： Takahiro Hamada ,  Munehisa Fujimaki ,  Kenji Yamashiro ,  Koichi Harada ,  Yukinari Shirako ,  Hiroyuki Sawano

发明人： Takahiro Hamada ,  Munehisa Fujimaki ,  Kenji Yamashiro ,  Koichi Harada ,  Yukinari Shirako ,  Hiroyuki Sawano

IPC分类号： G02B6/02

CPC分类号： C03C4/0042 ,  C03B2201/22 ,  C03C25/607 ,  G02B6/02 ,  Y02P40/57

摘要： A method of treating optical fiber includes at least a first step of creating a reduced-pressure atmosphere in a space which holds the optical fiber, and a second step of introducing to the space a deuterium-containing gas so as to expose the optical fiber to the gas.

公开(公告)号：US20060127018A1

公开(公告)日：2006-06-15

申请号：US11289335

申请日：2005-11-30

申请人： Takahiro Hamada ,  Kenji Yamashiro ,  Munehisa Fujimaki ,  Koichi Harada ,  Yukinari Shirako ,  Hiroyuki Sawano ,  Shunichirou Hirafune

发明人： Takahiro Hamada ,  Kenji Yamashiro ,  Munehisa Fujimaki ,  Koichi Harada ,  Yukinari Shirako ,  Hiroyuki Sawano ,  Shunichirou Hirafune

IPC分类号： G02B6/02

CPC分类号： C03C25/607 ,  C03C3/06 ,  C03C2201/22 ,  C03C2203/54 ,  G02B6/02

摘要： A treatment method for an optical fiber including accommodating an optical fiber inside a treatment chamber; introducing a deuterium containing gas into the treatment chamber; and in a deuterium treatment step, exposing the optical fiber to atmosphere of the deuterium containing gas. In the deuterium treatment step, a deuterium concentration D in the treatment chamber during the deuterium treatment is calculated from an initial value A of a deuterium concentration in the deuterium containing gas inside the treatment chamber, a concentration B of oxygen in an ambient atmosphere of the treatment chamber, and a concentration C of oxygen in the deuterium containing gas inside the treatment chamber, and the deuterium concentration in the treatment chamber is controlled based on the deuterium concentration D calculated. Other gases such as hydrogen containing gas or nitrogen containing gas may also be used according to the invention.

公开(公告)号：US07486863B2

公开(公告)日：2009-02-03

申请号：US11455690

申请日：2006-06-20

申请人： Takahiro Hamada ,  Munehisa Fujimaki ,  Kenji Yamashiro ,  Koichi Harada ,  Yukinari Shirako ,  Hiroyuki Sawano

发明人： Takahiro Hamada ,  Munehisa Fujimaki ,  Kenji Yamashiro ,  Koichi Harada ,  Yukinari Shirako ,  Hiroyuki Sawano

IPC分类号： G02B6/02

CPC分类号： C03C4/0042 ,  C03B2201/22 ,  C03C25/607 ,  G02B6/02 ,  Y02P40/57

摘要： A method of treating optical fiber includes at least a first step of creating a reduced-pressure atmosphere in a space which holds the optical fiber, and a second step of introducing to the space a deuterium-containing gas so as to expose the optical fiber to the gas.

摘要翻译： 处理光纤的方法至少包括在保持光纤的空间中产生减压气氛的第一步骤，以及向该空间引入含氘气体以将光纤暴露于 气体。

公开(公告)号：US07041334B2

公开(公告)日：2006-05-09

申请号：US10313402

申请日：2002-12-06

申请人： Munehisa Fujimaki ,  Takahiro Hamada ,  Koichi Harada

发明人： Munehisa Fujimaki ,  Takahiro Hamada ,  Koichi Harada

IPC分类号： B05D5/06

CPC分类号： B29D11/00663 ,  B29L2011/0075

摘要： An optical fiber coating die is made such that an interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a pressure value of resin inside a coating cup, and the interfacial shear rate is in a range of −1.5×105 to 0 sec−1. Also, an optical fiber drawing die is made such that the interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a diameter of a coating resin, and the interfacial shear rate is in a range of range of −3×105 to 2×105 sec−1. By doing this, an optical fiber drawing die which can be used in an optical fiber drawing method so as to realize stable resin coating operation even in high-speed drawing operation and high productivity can be realized.

公开(公告)号：US20060016393A1

公开(公告)日：2006-01-26

申请号：US11187662

申请日：2005-07-22

申请人： Munehisa Fujimaki ,  Takahiro Hamada ,  Koichi Harada

发明人： Munehisa Fujimaki ,  Takahiro Hamada ,  Koichi Harada

IPC分类号： B29D11/00

CPC分类号： B29D11/00663 ,  B29L2011/0075

摘要： An optical fiber coating die is made such that an interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a pressure value of resin inside a coating cup, and the interfacial shear rate is in a range of −1.5×105 to 0 sec−1. Also, an optical fiber drawing die is made such that the interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a diameter of a coating resin, and the interfacial shear rate is in a range of range of −3×105 to 2×105 sec−1. By doing this, an optical fiber drawing die which can be used in an optical fiber drawing method so as to realize stable resin coating operation even in high-speed drawing operation and high productivity can be realized.

公开(公告)号：US20090084141A1

公开(公告)日：2009-04-02

申请号：US12327993

申请日：2008-12-04

申请人： Tomohiro Nunome ,  Hiroshi Kutami ,  Manabu Saitou ,  Kenji Okada ,  Munehisa Fujimaki ,  Koichi Harada

发明人： Tomohiro Nunome ,  Hiroshi Kutami ,  Manabu Saitou ,  Kenji Okada ,  Munehisa Fujimaki ,  Koichi Harada

IPC分类号： C03B37/018

CPC分类号： C03B37/01413 ,  C03B37/02718 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2205/56 ,  G02B6/03622 ,  Y02P40/57

摘要： An optical fiber is formed by performing vapor phase deposition of SiO2 on the outside of a glass rod comprising a core section and a first cladding section and drawing a glass preform which formed by a second cladding section. Also, a single mode optical fiber is manufactured so that the ratio of the diameter D of the first cladding section and the diameter d of the core section is in a range of 4.0 to 4.8, and OH concentration is 0.1 ppm or less. Also, an optical fiber is manufactured so that a value of D/d>4.8, and the OH concentration is 0. 1 ppm or less. It is thereby possible to maintain an initial loss in the 1380 nm wavelength range even if hydrogen diffusion occurs.

摘要翻译： 通过在包括芯部和第一包层部分的玻璃棒的外部进行SiO 2的气相沉积并且拉制由第二包层部形成的玻璃预制件来形成光纤。 此外，制造单模光纤，使得第一包层部分的直径D和芯部分的直径d的比率在4.0至4.8的范围内，并且OH浓度为0.1ppm或更小。 此外，制造光纤，使得D / d> 4.8的值和OH浓度为0.1ppm以下。 因此即使发生氢扩散，也可以保持1380nm波长范围的初始损耗。

公开(公告)号：US20060204193A1

公开(公告)日：2006-09-14

申请号：US11433576

申请日：2006-05-15

申请人： Kenji Okada ,  Koichi Harada ,  Shunichirou Hirafune ,  Munehisa Fujimaki

发明人： Kenji Okada ,  Koichi Harada ,  Shunichirou Hirafune ,  Munehisa Fujimaki

IPC分类号： G02B6/02

CPC分类号： C03B37/0253 ,  C03B37/02718 ,  C03B37/029 ,  C03B2201/23 ,  C03B2205/40 ,  C03B2205/56 ,  C03B2205/72 ,  C03C13/045 ,  C03C2201/23 ,  Y02P40/57

摘要： A drawing method for a bare optical fiber, comprises the steps of: melting an optical fiber preform using a heating device and drawing the bare optical fiber; and naturally cooling down the bare optical fiber or forcibly cooling down the bare optical fiber by a cooling device after the heating and melting step, wherein a temperature history during the drawing the optical fiber preform to obtain the bare optical fiber in the heating device satisfies a relational expression: T≦−0.01X+12 where a time period when the heated and molten portion of the optical fiber preform heated and molten by the heating device reaches 1800° C. or higher is T (min) and a OH group concentration in a cladding layer of the optical fiber preform is X (wtppm).

摘要翻译： 一种裸光纤的拉丝方法，包括以下步骤：使用加热装置熔化光纤预制棒并拉制裸光纤; 并且在加热熔融步骤之后自然地冷却裸光纤或强制地冷却裸光纤，其中在加热装置中获得裸光纤的拉伸期间的温度历史满足了 关系表达式：T <= -0.01X + 12其中加热装置加热熔化的光纤预制件的加热和熔融部分达到1800℃或更高的时间段为T（min），OH基浓度 在光纤预制件的包覆层中为X（wtppm）。

公开(公告)号：US07658086B2

公开(公告)日：2010-02-09

申请号：US11433576

申请日：2006-05-15

申请人： Kenji Okada ,  Koichi Harada ,  Shunichirou Hirafune ,  Munehisa Fujimaki

发明人： Kenji Okada ,  Koichi Harada ,  Shunichirou Hirafune ,  Munehisa Fujimaki

IPC分类号： C03B37/023

CPC分类号： C03B37/0253 ,  C03B37/02718 ,  C03B37/029 ,  C03B2201/23 ,  C03B2205/40 ,  C03B2205/56 ,  C03B2205/72 ,  C03C13/045 ,  C03C2201/23 ,  Y02P40/57

摘要： A drawing method for a bare optical fiber, comprises the steps of: melting an optical fiber preform using a heating device and drawing the bare optical fiber; and naturally cooling down the bare optical fiber or forcibly cooling down the bare optical fiber by a cooling device after the heating and melting step, wherein a temperature history during the drawing the optical fiber preform to obtain the bare optical fiber in the heating device satisfies a relational expression: T≦−0.01X+12 where a time period when the heated and molten portion of the optical fiber preform heated and molten by the heating device reaches 1800° C. or higher is T (min) and a OH group concentration in a cladding layer of the optical fiber preform is X (wtppm).

摘要翻译： 一种裸光纤的拉丝方法，包括以下步骤：使用加热装置熔化光纤预制棒并拉制裸光纤; 并且在加热熔融步骤之后自然地冷却裸光纤或强制地冷却裸光纤，其中在加热装置中获得裸光纤的拉伸期间的温度历史满足了 关系表达式：T <= -0.01X + 12其中加热装置加热熔化的光纤预制件的加热和熔融部分达到1800℃或更高的时间段为T（min），OH基浓度 在光纤预制件的包覆层中为X（wtppm）。

公开(公告)号：US06768854B2

公开(公告)日：2004-07-27

申请号：US10281009

申请日：2002-10-25

申请人： Koji Tsuruśaki ,  Koichi Harada ,  Munehisa Fujimaki

发明人： Koji Tsuruśaki ,  Koichi Harada ,  Munehisa Fujimaki

IPC分类号： G02B622

CPC分类号： C03B37/032 ,  C03C25/12 ,  Y02P40/57 ,  Y10S242/92

摘要： A manufacturing method and apparatus for manufacturing a coated optical fiber which has a superior surface smoothness of a resin coating and which can be coated with a colored ink with high coating performance. In the method including the steps of making a coated optical fiber by forming an outer coating layer around a bare optical fiber; and winding the coated optical fiber via pulleys by a take-up, the surface roughness of each solid body which the outer layer of the running coated optical fiber contacts is 0.8 &mgr;m or less. When the temperature of the outer coating layer is a room temperature or the Young's modulus of the outer coating layer is higher than 500 MPa, the surface roughness of each solid body, which the outer layer of the coated optical fiber contacts during drawing or rewinding, is 1.2 &mgr;m or less.

摘要翻译： 一种涂覆光纤的制造方法和装置，其具有优异的树脂涂层的表面平滑度，并且可以涂覆有高涂层性能的着色油墨。 在包括通过在裸光纤周围形成外涂层来制造涂覆光纤的步骤的方法中， 并且通过卷取辊通过皮带轮卷绕涂布的光纤，所述运行中的涂覆的光纤的外层的外表面的表面粗糙度为0.8μm以下。 当外涂层的温度为室温或外涂层的杨氏模量高于500MPa时，涂布光纤的外层在拉伸或倒带期间接触的表面粗糙度， 是1.2mum以下。