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71. 发明专利

JP2009086558A Dispersion compensating optical fiber, optical transmission system, and method for designing dispersion compensating optical fiber 有权
标题翻译：分散补偿光纤，光传输系统和设计分散光补偿光纤的方法
公开(公告)号：JP2009086558A
公开(公告)日：2009-04-23
申请号：JP2007259318
申请日：2007-10-03
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： NAKAJIMA KAZUHIDE , MATSUI TAKASHI , TAJIMA KATSUSUKE
IPC分类号： G02B6/02 , G02B6/00 , G02B6/032 , G02B6/036
摘要： PROBLEM TO BE SOLVED: To provide a dispersion compensating optical fiber, an optical transmission system and a method for designing a dispersion compensating optical fiber that easily reduce an accumulated dispersion and an accumulated dispersion slope characteristic in an arbitrary wavelength band including the zero dispersion wavelength band of a transmission fiber. SOLUTION: A positive dispersion optical fiber 15 having a positive chromatic dispersion characteristic and a negative dispersion optical fiber 16 having a negative chromatic dispersion characteristic are cascaded to the transmission fiber 12 to reduce an accumulated dispersion and an accumulated dispersion slope. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种色散补偿光纤，光传输系统和一种用于设计色散补偿光纤的方法，其可以容易地减少包括零的任意波段的累积色散和累积色散斜率特性传输光纤的色散波长带。解决方案：具有正色散特性的正色散光纤15和具有负色散特性的负色散光纤16级联到传输光纤12，以减少累积色散和累积色散斜率。版权所有（C）2009，JPO＆INPIT

72. 发明专利

JP2009063801A Optical fiber and method of manufacturing the same 有权
标题翻译：光纤及其制造方法
公开(公告)号：JP2009063801A
公开(公告)日：2009-03-26
申请号：JP2007231171
申请日：2007-09-06
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： FUKAI CHISATO , MIKAWA IZUMI , NAKAJIMA KAZUHIDE , MATSUI TAKASHI , TAJIMA KATSUSUKE
IPC分类号： G02B6/00 , C03B37/012
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber having a plurality of cavities in the axial direction of the optical fiber in which complicated wiring works are reduced. SOLUTION: The optical fiber 10 is composed of a core part 11 and a clad part 12 which has a refractive index smaller than that of the core part 11, wherein a plurality of air layers 14 and a region 15 in which glass layers 13 having a refractive index equal to or smaller than that of the clad part 12 are mixed, exist in the axial direction of the optical fiber in the clad part 12. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供一种在光纤的轴向上具有多个空腔的光纤，其中复杂的布线工作被减少。解决方案：光纤10由芯部11和折射率小于芯部11的折射率的包层部12构成，其中多个空气层14和区域15，其中玻璃层折射率等于或小于包层部分12的折射率的折射率13在包层部分12中的光纤的轴向方向上存在。（C）2009，JPO＆INPIT

73. 发明专利

JP2008305052A Heating detection method and apparatus 审中-公开
标题翻译：加热检测方法和装置
公开(公告)号：JP2008305052A
公开(公告)日：2008-12-18
申请号：JP2007150037
申请日：2007-06-06
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MATSUI TAKASHI , NAKAJIMA KAZUHIDE , SHIRAKI KAZUYUKI , MIKAWA IZUMI
IPC分类号： G08B17/06 , G01K11/12
摘要： PROBLEM TO BE SOLVED: To provide a heating detection method and apparatus for remotely detecting abnormal heating and its heated section by means of a simple and inexpensive arrangement. SOLUTION: Abnormal heating and its heated section are remotely detected by means of a group of optical fibers comprising two or more kinds of optical fibers 12-1 to 12-N different in clad reflactive indexes, a light source 10, a polarizer 13, and a light receiving part 14. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过简单且廉价的布置来远程检测异常加热及其加热部分的加热检测方法和装置。解决方案：通过包括两种或多种不同的包层反射指数的光纤12-1至12-N的一组光纤，光源10，偏振器 13，以及光接收部分14.版权所有（C）2009，JPO＆INPIT

74. 发明专利

JP2008145315A Method and device of measuring temperature/distortion of optical fiber 有权
标题翻译：测量光纤温度/失真的方法和装置
公开(公告)号：JP2008145315A
公开(公告)日：2008-06-26
申请号：JP2006334058
申请日：2006-12-12
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MATSUI TAKASHI , NAKAJIMA KAZUHIDE , SHIRAKI KAZUYUKI , MIKAWA IZUMI
IPC分类号： G01M11/00 , G01B11/16 , G01D5/353 , G01M11/02
摘要： PROBLEM TO BE SOLVED: To provide a method and device of the temperature/distortion of an optical fiber capable of measuring the temperature/distortion of the optical fiber at high efficiency in a simple configuration.
SOLUTION: The device of measuring the temperature/distortion of the optical fiber includes: a light source part 2 for emitting measurement light; the optical fiber 1 with holes in which the measurement light is incident on one end by having the three or more holes 13 formed along an optical axis direction on the circumference of a core region 11; a light/electric convertor 4 converted into an electric signal by being provided on the other end of the optical fiber with the holes, being generated in the optical fiber 1 with the holes and detecting a frontward Brillouin scattering light advancing in the same direction as the measurement light; and a spectrum analyzer 5 for displaying the frequency spectrum of an output signal output from the light/electric convertor 4. The device calculates the temperature or distortion of a medium, a space or the like by analyzing the obtained output signal.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供能够以简单的结构高效率地测量光纤的温度/变形的光纤的温度/变形的方法和装置。解决方案：测量光纤的温度/失真的装置包括：用于发射测量光的光源部分2; 具有孔的光纤1通过在芯区域11的圆周上沿着光轴方向形成有三个以上的孔13而将测量光入射到一端; 光/电转换器4通过在具有孔的光纤1中产生的具有孔的光纤的另一端处被转换成电信号，并且检测在与光纤1相同的方向上前进的向前布里渊散射光测量灯; 以及用于显示从光/电转换器4输出的输出信号的频谱的频谱分析器5.该装置通过分析获得的输出信号来计算介质的温度或失真或空间等。版权所有（C）2008，JPO＆INPIT

75. 发明专利

JP2007010728A Optical fiber with pore 有权
标题翻译：光纤带孔
公开(公告)号：JP2007010728A
公开(公告)日：2007-01-18
申请号：JP2005187993
申请日：2005-06-28
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： NAKAJIMA KAZUHIDE , MATSUI TAKASHI , MIKAWA IZUMI
IPC分类号： G02B6/00 , G02B6/032
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber with pores which can easily be manufactured by simplifying controllability of wavelength dispersion characteristics and a refractive index distribution in a wide wavelength range of 1,460 to 1,625 nm. SOLUTION: The optical fiber with pores has a core portion 1, a clad portion 2 covering the core portion 1, and six pore portions 3 formed at a specified distance Λ 1 from the center C 1 of the core portion 1 at equal intervals, and is characterized in that the standardized pore position Λ/a obtained by standardizing the specified distance Λ 1 by the core radius (a) of the core portion 1, the standardized pore diameter d/2a obtained by standardizing the pore diameter (d) of the pore portion 3 by the core diameter 2a of the core portion 1, and the core radius (a) and the specific refractive index difference Δ of the core portion 1 from the clad portion 2 are within specified ranges and the absolute value of wavelength dispersion in a wavelength range of 1,460 to 1,625 nm is 3.5 to 10 ps/nm×km. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有通过简化波长色散特性的控制性和在1,460至1,625nm的宽波长范围内的折射率分布可容易地制造的孔的光纤。解决方案：具有孔的光纤具有芯部1，覆盖芯部1的包层部分2和从中心C形成在特定距离Λ 1 的六个孔部分3，芯部1的SB> 1 ，其特征在于，通过芯部半径（a）将指定距离Λ 1 标准化而获得的标准化孔位置Λ/ a，芯部分1的核心部分1的核心直径2a和芯部半径（a）和比折射率（a）之间通过将孔部分3的孔径（d）标准化而得到的标准孔径d / 芯部1与包层部2的差Δ在规定范围内，波长范围1,460〜1,625nm的波长色散的绝对值为3.5〜10ps / nm×km。版权所有（C）2007，JPO＆INPIT

76. 发明专利

JP2007010727A Dispersion control fiber and optical transmission line 有权
标题翻译：分散控制光纤和光传输线
公开(公告)号：JP2007010727A
公开(公告)日：2007-01-18
申请号：JP2005187992
申请日：2005-06-28
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： NAKAJIMA KAZUHIDE , MATSUI TAKASHI , MIKAWA IZUMI
IPC分类号： G02B6/00 , G02B6/02 , G02B6/032
摘要： PROBLEM TO BE SOLVED: To provide a dispersion control fiber which is suitable for high-density wavelength-division multiplex transmission in a wavelength band of 1,525 to 1,575 nm. SOLUTION: The absolute value of total dispersion D t1550 at a wavelength of 1,550 nm is ≥20 ps/nm, and total dispersion D t1460 at a wavelength of 1,460 nm, total dispersion D t1625 at a wavelength of 1,625 nm, and a total dispersion slope S t1550 at a wavelength 1,550 nm satisfy relational expressions (1) to (3) or relational expressions (4) to (6). Namely, when D t1550 ≤-20 ps/nm, (1) D t1460 ≥-117+0.01D t1550 , (2)D t1625 ≥-292.5+0.025D t1550 , and (3) S t1550 ≥D t1550 /90, or when D t1550 ≥+20 ps/nm, (4) D t1460 ≤153+0.1D t1550 , (5) D t1625 ≤345-0.5D t1550 , and (6) S t1550 ≤D t1550 /90. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种适用于1,525至1,575nm波段的高密度波分复用传输的色散控制光纤。解决方案：波长为1,550nm处的总色散D t1550 的绝对值为≥20ps/ nm，波长1,460处的总色散D t1460 nm，波长为1,625nm的总色散D t1625 和波长1,550nm的总色散斜率S t1550 满足关系式（1）〜（3）或关系式（4）〜（6）。也就是说，当D t1550 ≤-20ps / nm时，（1）D t1460 ≥-117 + 0.01D t1550 ，（2）D t1625 ≥-292.5 + 0.025D t1550 ，和（3）S t1550 ≥D t1550 / 90，或当D t1550 ≥+ 20ps / nm时，（4）D t1460 ≤153+ 0.1D t1550 ，（5）D t1625 ≤345-0.5D t1550 和（6）S t1550 ≤D t1550 / 90。版权所有（C）2007，JPO＆INPIT

77. 发明专利

JP2006053331A Photonic crystal optical fiber 有权
标题翻译：光电晶体光纤
公开(公告)号：JP2006053331A
公开(公告)日：2006-02-23
申请号：JP2004234668
申请日：2004-08-11
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MATSUI TAKASHI , SHU TAKESHI , NAKAJIMA KAZUHIDE , MIKAWA IZUMI
IPC分类号： G02B6/00 , G02B6/036
摘要： PROBLEM TO BE SOLVED: To provide a photonic crystal optical fiber having an effective cross section A eff larger than that of a conventional photonic crystal optical fiber, a low wavelength dispersion over a wide band, and a low loss. SOLUTION: The photonic crystal optical fiber has a core part 1, an inner layer clad part 2 which encloses the core part 1, and an outer layer clad part 3 which encloses the inner layer clad 2 with a space 1, a plurality of holes 5 and 6 are formed on the inner layer clad part 2 and the outer layer clad part 3, respectively, and no holes are formed in the distance L, the refractive index n c of the core part 1, the effective refractive index n cl1 of the inner layer clad part 2 and the effective refractive index n cl2 of the inner layer clad part 3 satisfy the relation n c >n cl2 >n cl1 , and light is transmitted through the region surrounded by the inner periphery a 2 of the outer layer clad part 3. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种具有比常规光子晶体光纤更大的有效截面积A eff 的光子晶体光纤，在宽带上具有低波长色散，以及低损失。解决方案：光子晶体光纤具有芯部1，包围芯部1的内层包层部2和包围有内层包层2的外层包层3，空间1，多个孔5和6分别形成在内层包层部分2和外层包层部分3上，并且在距离L中不形成孔，芯部分的折射率n c 如图1所示，内层包层部3的内层包层部2的有效折射率n cl1 和内层包层3的有效折射率n cl2 满足关系n c > n cl2 > n cl1 ，光透过由外周a的外周a 2 包围的区域（C）2006，JPO＆NCIPI

78. 发明专利

JP2006038898A Single mode optical fiber and distributed raman amplification transmission system 审中-公开
标题翻译：单模光纤和分布式拉曼放大传输系统
公开(公告)号：JP2006038898A
公开(公告)日：2006-02-09
申请号：JP2004213917
申请日：2004-07-22
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： FUKAI CHISATO , NAKAJIMA KAZUHIDE , TAJIMA KATSUSUKE , SHU TAKESHI
IPC分类号： G02B6/02 , G02F1/35 , H01S3/10 , H01S3/30
摘要： PROBLEM TO BE SOLVED: To provide a single mode optical fiber suitable for a wide wavelength band distributed Raman amplification transmission and to provide a distributed Raman amplification transmission system. SOLUTION: The single mode optical fiber has a core part in which pure quartz is used and a clad part having a refractive index lower than that of the core part, and is so designed that a theoretical cut-off wavelength is 1.36 μm or smaller, a zero-dispersion wavelength is 1.36 μm or smaller and a bending loss is 0.5 dB or smaller under a prescribed condition. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供适用于宽波段分布拉曼放大传输的单模光纤，并提供分布式拉曼放大传输系统。解决方案：单模光纤具有使用纯石英的核心部分和折射率低于核心部分的折射率的包层部分，并且被设计成使得理论截止波长为1.36μm 或更小，在规定条件下，零色散波长为1.36μm以下，弯曲损耗为0.5dB以下。版权所有（C）2006，JPO＆NCIPI

79. 发明专利

JP2005338435A Multilayer optical fiber 有权
标题翻译：多层光纤
公开(公告)号：JP2005338435A
公开(公告)日：2005-12-08
申请号：JP2004157201
申请日：2004-05-27
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MATSUI TAKASHI , SHU TAKESHI , NAKAJIMA KAZUHIDE , MIKAWA IZUMI
IPC分类号： G02B6/02 , G02B6/00 , G02B6/036 , G02B6/16 , G02B6/22
摘要： PROBLEM TO BE SOLVED: To provide a multilayer optical fiber that realizes single mode transmission and that facilitates alignment in the case of connecting the optical fiber. SOLUTION: The multilayer optical fiber is designed to be a double layer optical fiber 10 composed of a first core 11, a first clad 12 surrounding the first core 11, a second core 14 surrounding the first clad 12, and a second clad 15 surrounding the second core. The first clad 12, the second core 14 and the second clad 15 are formed coaxially with the center axis of the first core 11, the effective refractive index of the first clad 12 is made lower than that of the second clad 15, the refractive index of the first core 11 is made higher than the effective index of the first clad 12, and the refractive index of the second core 14 is made higher than the effective index of the second clad 15. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供实现单模传输并且在连接光纤的情况下有利于对准的多层光纤。解决方案：多层光纤被设计为由第一芯11，围绕第一芯11的第一包层12，围绕第一包层12的第二芯14和第二包层12构成的双层光纤10 15围绕第二核心。第一包层12，第二芯14和第二包层15与第一芯11的中心轴同轴地形成，使第一包层12的有效折射率低于第二包层15的有效折射率，折射率使第一芯11的折射率高于第一包层12的有效折射率，并使第二芯体14的折射率高于第二包层15的有效折射率。（C）2006， JPO＆NCIPI

80. 发明专利

JP2005208268A Optical fiber 审中-公开
标题翻译：光纤
公开(公告)号：JP2005208268A
公开(公告)日：2005-08-04
申请号：JP2004013810
申请日：2004-01-22
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SHU TAKESHI , TAJIMA KATSUSUKE , KUROKAWA KENJI , NAKAJIMA KAZUHIDE , MIKAWA IZUMI
IPC分类号： G02B6/036 , G02B6/22
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber which has a high strength without affecting optical characteristics of the optical fiber itself. SOLUTION: The optical fiber comprises a core part 1 for waveguiding light, a first clad part 2 surrounding the core part 1 and a second clad part 3 surrounding the first clad part 2. Therein, the second clad part 3 has a plurality of holes 4 extended in the optical fiber axial direction. Thereby, such a conventional problem that, when an external force is applied, a stress is concentrated into scratches on the surface of optical fiber and defects within the scratches and the breaking occurs owing to the scratches and the defects is solved and the high strength optical fiber can be manufactured. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有高强度而不影响光纤本身的光学特性的光纤。解决方案：光纤包括用于波导光的芯部1，围绕芯部1的第一包层部分2和围绕第一包层部分2的第二包层部分3.其中，第二包层部分3具有多个孔4在光纤轴向延伸。因此，当施加外力时，这样的常规问题是，应力集中在光纤表面上的划痕和划痕中的缺陷，并且由于划痕而产生断裂，并且解决了缺陷，并且高强度光学纤维可以制造。版权所有（C）2005，JPO＆NCIPI

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