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1. 发明授权

US07068901B2 Optical fiber preform producing method, optical fiber production method, and optical fiber 失效
标题翻译：光纤预制棒生产方法，光纤生产方法和光纤
公开(公告)号：US07068901B2
公开(公告)日：2006-06-27
申请号：US10494278
申请日：2003-04-16
申请人： Masaaki Hirano , Eiji Yanada , Tomoyuki Yokokawa , Takashi Sasaki
发明人： Masaaki Hirano , Eiji Yanada , Tomoyuki Yokokawa , Takashi Sasaki
IPC分类号： G02B6/22
CPC分类号： G02B6/03688 , C03B37/01211 , C03B37/0124 , C03B2203/22 , C03B2203/29 , C03B2203/36 , G02B6/02271 , G02B6/03644 , G02B6/03666 , Y02P40/57
摘要： An optical fiber preform comprises a central core portion having a maximal value Nc of refractive index in the center, and outside the central core portion, comprising at least a depressed portion having a minimal value Nd of refractive index, a ring portion having a maximal value Nr of refractive index and an outside cladding layer having a maximal value No of refractive index. The optical fiber preform satisfies a relation of Nc≧Nr>No>Nd among the values of refractive index. A method of the optical fiber preform comprises fabricating a glass rod by inserting a rod containing at least the central core portion into a pipe containing at least the depressed portion and integrating them, fabricating a glass pipe having the ring portion, and fabricating a vitreous body by integrating the glass rod and the glass pipe by collapsing after inserting the glass rod into the glass pipe.
摘要翻译：光纤预制件包括在中心具有折射率最大值Nc并且在中心芯部分外部的中心芯部分，至少包括具有最小折射率Nd的凹陷部分，具有最大值的环部分折射率Nr和折射率最大值No的外包层。光纤预制棒满足折射率值之间的Nc> = Nr> No> Nd的关系。光纤预制棒的方法包括通过将至少包含中心纤芯部分的棒插入到至少包含凹陷部分并将其集成的管中来制造玻璃棒，制造具有该环部分的玻璃管，以及制造玻璃体通过在将玻璃棒插入玻璃管中之后通过塌缩来集成玻璃棒和玻璃管。

2. 发明授权

US07376316B2 Manufacturing method of optical fiber preform, manufacturing method of optical fiber, and optical fiber 有权
标题翻译：光纤预制棒的制造方法，光纤的制造方法以及光纤
公开(公告)号：US07376316B2
公开(公告)日：2008-05-20
申请号：US10567912
申请日：2004-08-03
申请人： Takashi Sasaki , Masaaki Hirano , Tomoyuki Yokokawa
发明人： Takashi Sasaki , Masaaki Hirano , Tomoyuki Yokokawa
IPC分类号： G02B6/00
CPC分类号： G02B6/03688 , C03B37/01807 , C03B37/01892 , C03B2201/04 , C03B2201/075 , C03B2201/12 , C03B2201/20 , C03B2201/28 , C03B2201/31 , C03B2203/22 , C03C3/06 , C03C13/04 , G02B6/03611 , G02B6/03666
摘要： Methods of manufacturing an optical fiber preform and an optical fiber, and an optical fiber formed by this method of manufacturing an optical fiber are provided, the optical fiber preform having a desired refractive index profile and being capable of suppressing an increase in loss due to the absorption by OH groups. A pipe is formed by an inside vapor phase deposition method such that glass layer to be formed into a core and a glass layer to be formed into a part of a cladding pipe are deposited in a starting pipe, the glass layers each containing at least one of fluorine, germanium, phosphorous, and chlorine, the starting pipe being made of a silica glass having an outside diameter in the range of 20 to 150 mm and a wall thickness in the range of 2 to 8 mm. The pipe thus formed is collapsed to form a glass rod in which the concentration of hydroxyl groups is 10 weight ppm or less in a region from the surface of the glass rod to a depth of 1 mm therefrom.
摘要翻译：提供了制造光纤预制棒和光纤的方法以及通过该光纤制造方法形成的光纤，所述光纤预制棒具有所需的折射率分布并且能够抑制由于 OH基吸收。通过内部气相沉积方法形成管，使得要形成芯的玻璃层和待形成为包层管的一部分的玻璃层沉积在起始管中，每个玻璃层包含至少一个的氟，锗，磷和氯，起始管由外径在20〜150mm，壁厚在2〜8mm的范围内的石英玻璃制成。由此形成的管道在从玻璃棒的表面到其深度为1mm的区域中折叠形成玻璃棒，其中羟基的浓度为10重量ppm以下。

3. 发明申请

US20060204189A1 Process for producing optical fiber preform, process for producing optical fiber and optical fiber 有权
标题翻译：光纤预制棒的制造方法，光纤和光纤的制造方法
公开(公告)号：US20060204189A1
公开(公告)日：2006-09-14
申请号：US10567912
申请日：2004-08-03
申请人： Takashi Sasaki , Masaaki Hirano , Tomoyuki Yokokawa
发明人： Takashi Sasaki , Masaaki Hirano , Tomoyuki Yokokawa
IPC分类号： G02B6/02
CPC分类号： G02B6/03688 , C03B37/01807 , C03B37/01892 , C03B2201/04 , C03B2201/075 , C03B2201/12 , C03B2201/20 , C03B2201/28 , C03B2201/31 , C03B2203/22 , C03C3/06 , C03C13/04 , G02B6/03611 , G02B6/03666
摘要： Methods of manufacturing an optical fiber preform and an optical fiber, and an optical fiber formed by this method of manufacturing an optical fiber are provided, the optical fiber preform having a desired refractive index profile and being capable of suppressing an increase in loss due to the absorption by OH groups. A pipe is formed by an inside vapor phase deposition method such that glass layer to be formed into a core and a glass layer to be formed into a part of a cladding pipe are deposited in a starting pipe, the glass layers each containing at least one of fluorine, germanium, phosphorous, and chlorine, the starting pipe being made of a silica glass having an outside diameter in the range of 20 to 150 mm and a wall thickness in the range of 2 to 8 mm. The pipe thus formed is collapsed to form a glass rod in which the concentration of hydroxyl groups is 10 weight ppm or less in a region from the surface of the glass rod to a depth of 1 mm therefrom.
摘要翻译：提供了制造光纤预制棒和光纤的方法以及通过该光纤制造方法形成的光纤，所述光纤预制棒具有所需的折射率分布并且能够抑制由于 OH基吸收。通过内部气相沉积方法形成管，使得要形成芯的玻璃层和待形成为包层管的一部分的玻璃层沉积在起始管中，每个玻璃层包含至少一个的氟，锗，磷和氯，起始管由外径在20〜150mm，壁厚在2〜8mm的范围内的石英玻璃制成。由此形成的管道在从玻璃棒的表面到其深度为1mm的区域中折叠形成玻璃棒，其中羟基的浓度为10重量ppm以下。

4. 发明授权

US07894697B2 Optical fiber, optical transmission line, optical module, and optical transmission system 有权
标题翻译：光纤，光传输线，光模块和光传输系统
公开(公告)号：US07894697B2
公开(公告)日：2011-02-22
申请号：US11976110
申请日：2007-10-22
申请人： Takashi Sasaki , Kazumasa Makihara , Tetsuya Haruna , Masashi Onishi , Masaaki Hirano
发明人： Takashi Sasaki , Kazumasa Makihara , Tetsuya Haruna , Masashi Onishi , Masaaki Hirano
IPC分类号： G02B6/02 , G02B6/036 , G02B6/028 , G02B6/00 , H04J14/02
CPC分类号： G02B6/03644 , C03B2203/22 , C03B2203/29 , C03B2203/36 , G02B6/02261 , G02B6/03627 , G02B6/29377
摘要： The present invention relates to an optical fiber which has a structure for further increasing an FOM (=|dispersion|/loss) and which can be applied to a dispersion compensation module. The optical fiber is mainly composed of silica glass and has a core region including a center of an optical axis, a depressed region surrounding the core region, a ring region surrounding the depressed region, and a cladding region surrounding the ring region and doped with F. As compared with the refractive index of pure silica glass, a relative refractive index difference of the core region is greater than 2% but less than 3%, a relative refractive index difference of the depressed region is −1% or more but −0.5% or less, a relative refractive index difference of the ring region is 0.01% or more but 0.24% or less, and a relative refractive index difference of the cladding region is −0.3% or more but −0.1% or less. The FOM at the wavelength of 1550 nm is 250 ps/nm/dB or more.
摘要翻译：本发明涉及具有进一步增加FOM（= |色散| /损耗）的结构的光纤，并且可以应用于色散补偿模块。该光纤主要由石英玻璃构成，具有包括光轴中心，围绕芯区域的凹陷区域，围绕该凹陷区域的环形区域和围绕该环形区域并且掺杂有F的包层区域的芯区域与纯石英玻璃的折射率相比，芯区域的相对折射率差大于2％但小于3％，凹陷区域的相对折射率差为-1％以上-0.5 ％以下，环区域的相对折射率差为0.01％以上且0.24％以下，包层区域的相对折射率差为-0.3％以上-0.1％以下。 1550nm波长的FOM为250ps / nm / dB以上。

5. 发明授权

US07486862B2 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：US07486862B2
公开(公告)日：2009-02-03
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 , C03B37/023
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。

6. 发明申请

US20080212091A1 Light source unit and spectrum analyzer 审中-公开
标题翻译：光源单元和频谱分析仪
公开(公告)号：US20080212091A1
公开(公告)日：2008-09-04
申请号：US12010212
申请日：2008-01-22
申请人： Masato Tanaka , Tetsuya Nakanishi , Tetsuya Haruna , Masaaki Hirano , Toshiaki Okuno , Takashi Sasaki , Masashi Onishi
发明人： Masato Tanaka , Tetsuya Nakanishi , Tetsuya Haruna , Masaaki Hirano , Toshiaki Okuno , Takashi Sasaki , Masashi Onishi
IPC分类号： G01J3/447 , H01S3/10
CPC分类号： G01J3/10 , G01J3/02 , G01J3/0205 , G01J3/0208 , G01J3/021 , G01J3/0218 , G01J3/0224 , G01J3/0229 , G01J3/0297 , G01J3/06 , G01J3/14 , G01J3/1895 , G01J3/26 , G01J3/433 , G01J2003/065
摘要： A light source unit and a spectrum analyzer are provided in which the influence of interference can be reduced under conditions where light is separated into spectral components. A spectrum analyzer 1 is equipped with a light source unit 2 for irradiating light onto sample A, a detector unit 3 for detecting the light reflected, scattered, or transmitted from the sample A, and a sample stage 4 on which a sample A is placed. A wide band light source 20 generates wide band light P1 such as supercontinuum light (SC light). Also, the light source unit 2 has an interference suppressing means for suppressing the interference of each wavelength component of the wide band light P1.
摘要翻译：提供了一种光源单元和频谱分析仪，其中在将光分离成光谱分量的条件下可以降低干扰的影响。频谱分析仪1具备用于向样品A照射光的光源单元2，检测从样品A反射，散射或透射的光的检测器单元3和放置样品A的样品台4 。宽带光源20产生诸如超连续光（SC light）的宽带光P 1。此外，光源单元2具有用于抑制宽带光P 1的每个波长分量的干扰的干扰抑制装置。

7. 发明授权

US07286740B2 Optical fiber, optical transmission line, optical module and optical transmission system 有权
标题翻译：光纤，光传输线，光模块和光传输系统
公开(公告)号：US07286740B2
公开(公告)日：2007-10-23
申请号：US11544007
申请日：2006-10-06
申请人： Takashi Sasaki , Kazumasa Makihara , Tetsuya Haruna , Masashi Onishi , Masaaki Hirano
发明人： Takashi Sasaki , Kazumasa Makihara , Tetsuya Haruna , Masashi Onishi , Masaaki Hirano
IPC分类号： G02B6/02 , G02B6/036 , G02B6/028 , G02B6/00
CPC分类号： G02B6/03644 , C03B2203/22 , C03B2203/29 , C03B2203/36 , G02B6/02261 , G02B6/03627 , G02B6/29377
摘要： The present invention relates to an optical fiber which has a structure for further increasing an FOM (=|dispersion|/loss) and which can be applied to a dispersion compensation module. The optical fiber is mainly composed of silica glass and has a core region including a center of an optical axis, a depressed region surrounding the core region, a ring region surrounding the depressed region, and a cladding region surrounding the ring region and doped with F. As compared with the refractive index of pure silica glass, a relative refractive index difference of the core region is 3% or more but 4% or less, a relative refractive index difference of the depressed region is −1% or more but −0.5% or less, a relative refractive index difference of the ring region is 0.01% or more but 0.24% or less, and a relative refractive index difference of the cladding region is −0.3% or more but −0.1% or less. The FOM at the wavelength of 1550 nm is 250 ps/nm/dB or more.
摘要翻译：本发明涉及具有进一步增加FOM（= |色散| /损耗）的结构的光纤，并且可以应用于色散补偿模块。该光纤主要由石英玻璃构成，具有包括光轴中心，围绕芯区域的凹陷区域，围绕该凹陷区域的环形区域和围绕该环形区域并且掺杂有F的包层区域的芯区域与纯石英玻璃的折射率相比，芯区域的相对折射率差为3％以上且4％以下，凹陷区域的相对折射率差为-1％以上-0.5 ％以下，环区域的相对折射率差为0.01％以上且0.24％以下，包层区域的相对折射率差为-0.3％以上-0.1％以下。 1550nm波长的FOM为250ps / nm / dB以上。

8. 发明授权

US08223323B2 Cutoff wavelength measuring method and optical communication system 有权
标题翻译：截止波长测量方法和光通信系统
公开(公告)号：US08223323B2
公开(公告)日：2012-07-17
申请号：US12750029
申请日：2010-03-30
申请人： Tetsuya Nakanishi , Masaaki Hirano , Takashi Sasaki
发明人： Tetsuya Nakanishi , Masaaki Hirano , Takashi Sasaki
IPC分类号： G01N21/00
CPC分类号： G01M11/33
摘要： A method includes a first step of joining a multimode fiber to a first end of an optical fiber being a specimen, allowing light to propagate from the multimode fiber to the specimen, measuring an intensity of light from a second end of the specimen, and determining a first power spectrum; a second step of joining the multimode fiber to a first end of a reference fiber having bending loss higher than that of the specimen, allowing light to propagate from the multimode fiber to the reference fiber, measuring an intensity of light from a second end of the reference fiber, and determining a second power spectrum; a third step of determining a difference spectrum by subtracting the second power spectrum from the first power spectrum; and a fourth step of determining a higher-order mode cutoff wavelength of the specimen on the basis of a shape of the difference spectrum.
摘要翻译：一种方法包括将多模光纤连接到作为样本的光纤的第一端的第一步骤，允许光从多模光纤传播到样品，测量来自样品的第二端的光的强度，以及确定第一功率谱; 将多模光纤连接到具有高于样品的弯曲损耗的参考光纤的第一端的第二步骤，允许光从多模光纤传播到参考光纤，测量来自第二端的光的强度参考光纤，并确定第二功率谱; 第三步骤，通过从第一功率谱中减去第二功率谱来确定差分谱; 以及基于差分光谱的形状来确定样本的高次模截止波长的第四步骤。

9. 发明申请

US20100247093A1 CUTOFF WAVELENGTH MEASURING METHOD AND OPTICAL COMMUNICATION SYSTEM 有权
标题翻译：切割波长测量方法和光通信系统
公开(公告)号：US20100247093A1
公开(公告)日：2010-09-30
申请号：US12750029
申请日：2010-03-30
申请人： Tetsuya Nakanishi , Masaaki Hirano , Takashi Sasaki
发明人： Tetsuya Nakanishi , Masaaki Hirano , Takashi Sasaki
IPC分类号： H04B10/08 , G01N21/00
CPC分类号： G01M11/33
摘要： A method includes a first step of joining a multimode fiber to a first end of an optical fiber being a specimen, allowing light to propagate from the multimode fiber to the specimen, measuring an intensity of light from a second end of the specimen, and determining a first power spectrum; a second step of joining the multimode fiber to a first end of a reference fiber having bending loss higher than that of the specimen, allowing light to propagate from the multimode fiber to the reference fiber, measuring an intensity of light from a second end of the reference fiber, and determining a second power spectrum; a third step of determining a difference spectrum by subtracting the second power spectrum from the first power spectrum; and a fourth step of determining a higher-order mode cutoff wavelength of the specimen on the basis of a shape of the difference spectrum.
摘要翻译：一种方法包括将多模光纤连接到作为样本的光纤的第一端的第一步骤，允许光从多模光纤传播到样品，测量来自样品的第二端的光的强度，以及确定第一功率谱; 将多模光纤连接到具有高于样品的弯曲损耗的参考光纤的第一端的第二步骤，允许光从多模光纤传播到参考光纤，测量来自第二端的光的强度参考光纤，并确定第二功率谱; 第三步骤，通过从第一功率谱中减去第二功率谱来确定差分谱; 以及基于差分光谱的形状来确定样本的高次模截止波长的第四步骤。

10. 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。

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