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1. 发明授权

US09562827B2 Measuring method of longitudinal distribution of bending loss of optical fiber, measuring method of longitudinal distribution of actual bending loss value of optical fiber, test method of optical line, manufacturing method of optical fiber cable, manufacturing method of optical fiber cord, and manufacturing method of optical fiber 有权
标题翻译：光纤弯曲损耗的纵向分布测量方法，光纤实际弯曲损耗值的纵向分布测量方法，光线路测试方法，光纤电缆的制造方法，光纤线的制造方法及其制造方法光纤
公开(公告)号：US09562827B2
公开(公告)日：2017-02-07
申请号：US13213506
申请日：2011-08-19
申请人： Shoji Tanigawa , Itaru Ishida , Shoichiro Matsuo , Toshio Kurashima , Kazuhide Nakajima , Tomoya Shimizu , Takashi Matsui , Yukihiro Goto
发明人： Shoji Tanigawa , Itaru Ishida , Shoichiro Matsuo , Toshio Kurashima , Kazuhide Nakajima , Tomoya Shimizu , Takashi Matsui , Yukihiro Goto
IPC分类号： G01M11/00
CPC分类号： G01M11/39 , G01M11/3145
摘要： A measuring method of a longitudinal distribution of bending loss of an optical fiber includes calculating an arithmetical mean value I(x) from two backscattering light intensities of two backscattering light at a position x obtained by bidirectional OTDR measurement of the optical fiber; and obtaining a bending loss value at the position x from a mode field diameter 2W(x) and a relative refractive index difference Δ(x) at the position x calculated from the arithmetical mean value.
摘要翻译：光纤的弯曲损耗的纵向分布的测量方法包括从通过光纤的双向OTDR测量获得的位置x处的两个后向散射光的两个后向散射光强度计算算术平均值I（x）; 并根据算术平均值计算的位置x处的模场直径2W（x）和相对折射率差Δ（x）在位置x处获得弯曲损耗值。

2. 发明授权

US09175946B2 Measuring method of hole diameter, hole position, hole surface roughness, or bending loss of holey optical fiber, manufacturing method of holey optical fiber, and test method of optical line of holey optical fiber 有权
标题翻译：多孔光纤的孔径，孔位置，孔表面粗糙度或弯曲损耗的测量方法，多孔光纤的制造方法以及多孔光纤的光学线路的测试方法
公开(公告)号：US09175946B2
公开(公告)日：2015-11-03
申请号：US13213328
申请日：2011-08-19
申请人： Itaru Ishida , Shoji Tanigawa , Shoichiro Matsuo , Toshio Kurashima , Kazuhide Nakajima , Tomoya Shimizu , Takashi Matsui , Yukihiro Goto
发明人： Itaru Ishida , Shoji Tanigawa , Shoichiro Matsuo , Toshio Kurashima , Kazuhide Nakajima , Tomoya Shimizu , Takashi Matsui , Yukihiro Goto
IPC分类号： G01N21/00 , H04B17/00 , G01B11/08 , G01N21/958 , G01N21/954 , G01B11/24 , G01B11/30
CPC分类号： G01B11/08 , G01B11/24 , G01B11/30 , G01B11/303 , G01B11/306 , G01N21/954 , G01N21/958
摘要： A measuring method of a hole diameter of a holey optical fiber includes calculating an arithmetical mean value I(x) from two backscattering light intensities at a position x of two backscattering light waveforms of the holey optical fiber, in which the two backscattering light waveforms are obtained by OTDR measurement; and obtaining the hole diameter at the position x, based on a correlation between an arithmetical mean value I(x) and an hole diameter of the holey optical fiber that is obtained in advance.
摘要翻译：多孔光纤的孔径的测量方法包括从多孔光纤的两个后向散射光波形的位置x处的两个后向散射光强度计算算术平均值I（x），其中两个后向散射光波形是通过OTDR测量获得; 并且基于预先获得的有孔光纤的算术平均值I（x）和孔径之间的相关性来获得位置x处的孔直径。

3. 发明授权

US09121995B2 Optical fiber having holes 有权
标题翻译：具有孔的光纤
公开(公告)号：US09121995B2
公开(公告)日：2015-09-01
申请号：US13559207
申请日：2012-07-26
申请人： Shoji Tanigawa , Katsuhiro Takenaga , Shoichiro Matsuo , Takashi Matsui , Taiji Sakamoto , Kyouzou Tsujikawa , Shigeru Tomita
发明人： Shoji Tanigawa , Katsuhiro Takenaga , Shoichiro Matsuo , Takashi Matsui , Taiji Sakamoto , Kyouzou Tsujikawa , Shigeru Tomita
IPC分类号： G02B6/036 , G02B6/032 , G02B6/02
CPC分类号： G02B6/02347 , G02B6/02333 , G02B6/03627
摘要： Each of a first clad region (12) and a second clad region (13) has holes (12a, 13a) which have identical diameters and are periodically formed so that the first clad region (12) and the second clad region (13) each have an effective refractive index lower than a refractive index of a core region (11), the effective refractive index of the first clad region (12) being lower than that of the second clad region (13).
摘要翻译：第一覆盖区域（12）和第二覆盖区域（13）中的每一个具有相同直径的孔（12a，13a），并且周期性地形成，使得第一覆盖区域（12）和第二覆盖区域（13）各自具有低于芯区域（11）的折射率的有效折射率，所述第一包层区域（12）的有效折射率低于所述第二包层区域（13）的有效折射率。

4. 发明授权

US07526168B2 Optical fiber, transmission system, and wavelength division multiplexing system 有权
标题翻译：光纤，传输系统和波分复用系统
公开(公告)号：US07526168B2
公开(公告)日：2009-04-28
申请号：US11744117
申请日：2007-05-03
申请人： Shoichiro Matsuo , Shoji Tanigawa , Keisuke Uchiyama , Kuniharu Himeno
发明人： Shoichiro Matsuo , Shoji Tanigawa , Keisuke Uchiyama , Kuniharu Himeno
IPC分类号： G02B6/02
CPC分类号： H04J14/02 , G02B6/02004 , G02B6/02009 , G02B6/02266 , G02B6/0281 , G02B6/0286 , G02B6/03605 , G02B6/03644 , G02B6/03666 , G02B6/03688 , H04B10/2537 , H04J14/0226 , H04J14/0232 , H04J14/0247 , H04J14/0252 , H04J14/0282
摘要： An optical fiber has a first mode field diameter in a dominant mode of an acoustic mode generated in the optical fiber different from a second mode field diameter in a light intensity distribution of the optical fiber. Furthermore, a transmission system is configured to perform an analog signal transmission, a baseband transmission, or an optical SCM transmission by use of the optical fiber.
摘要翻译：在光纤的光强度分布中，光纤具有在与第二模场直径不同的光纤中产生的声学模式的主模式中的第一模场直径。此外，传输系统被配置为通过使用光纤来执行模拟信号传输，基带传输或光SCM传输。

5. 发明授权

US06928211B2 Optical fiber and optical transmission path that uses the optical fiber 失效
标题翻译：使用光纤的光纤和光传输路径
公开(公告)号：US06928211B2
公开(公告)日：2005-08-09
申请号：US10636552
申请日：2003-08-08
申请人： Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno
发明人： Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno
IPC分类号： G02B6/036 , G02B6/02
CPC分类号： G02B6/02271 , G02B6/02 , G02B6/02014 , G02B6/03611
摘要： There is provided at low cost an optical fiber suitable for wavelength division multiplex transmissions that has strengthened the tolerance to bending loss at even smaller bending diameters. The present invention is an optical fiber whose base material is silica glass and that has a two layer structure formed by a core that has a substantially uniform refractive index and by a cladding that is located outside the core and that has a substantially uniform refractive index, wherein the optical fiber satisfies the following conditions (1) to (3): (1) an outer diameter of the core is in a range of 4 to 8 μm, and a relative refractive index difference of the core is in a range of 0.4 to 0.8%; (2) chromatic dispersion at a wavelength of 1550 nm is in a range of 2 to 15 ps/nm/km; and (3) effective area at a wavelength of 1550 nm is 40 μm2 or more.
摘要翻译：以低成本提供了适用于波分复用传输的光纤，其在更小的弯曲直径下增强了对弯曲损耗的公差。本发明是一种基材为石英玻璃的光纤，其具有由具有基本上均匀的折射率的芯构成的两层结构，以及位于芯外部并具有基本上均匀的折射率的包层，其中光纤满足以下条件（1）至（3）：（1）芯的外径在4至8μm的范围内，并且芯的相对折射率差在0.4的范围内至0.8％; （2）波长1550nm的色散在2〜15ps / nm / km的范围内; 和（3）1550nm波长的有效面积为40μm以上。

6. 发明申请

US20050259241A1 Optical fiber polarization mode dispersion measurement method and measurement device 有权
标题翻译：光纤偏振模色散测量方法及测量装置
公开(公告)号：US20050259241A1
公开(公告)日：2005-11-24
申请号：US10521236
申请日：2003-07-18
申请人： Shoji Tanigawa , Tomoharu Sagawa , Masataka Ikeda , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
发明人： Shoji Tanigawa , Tomoharu Sagawa , Masataka Ikeda , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
IPC分类号： G01M11/00 , G01M11/02 , G01N21/00
CPC分类号： G01M11/3181
摘要： A method of measuring polarization mode dispersion of an optical fiber includes inputting linearly polarized pulse light into an optical fiber, separating the input linearly polarized light from backscattered light from the optical fiber, detecting a light intensity of the backscattered light as time series data since the generation of the pulse light, calculating a fluctuation of the detected light intensity in the time series data, and evaluating polarization mode dispersion in the optical fiber, based on the calculated fluctuation value.
摘要翻译：测量光纤的偏振模色散的方法包括将线性偏振脉冲光输入到光纤中，将输入的线性偏振光与来自光纤的反向散射光分离，从后向散射光的光强度作为时间序列数据检测，因为产生脉冲光，计算时间序列数据中的检测光强度的波动，并且基于所计算的波动值来评估光纤中的偏振模色散。

7. 发明授权

US06694079B1 Disperson-shifted optical fiber employing dual shape core profile 失效
标题翻译：采用双形磁芯轮廓的Disperson移位光纤
公开(公告)号：US06694079B1
公开(公告)日：2004-02-17
申请号：US09787780
申请日：2001-03-21
申请人： Shoichiro Matsuo , Hiroshi Kutami , Shoji Tanigawa
发明人： Shoichiro Matsuo , Hiroshi Kutami , Shoji Tanigawa
IPC分类号： G02B622
CPC分类号： G02B6/0365 , G02B6/02014 , G02B6/02242 , G02B6/02257 , G02B6/02271 , G02B6/03611 , G02B6/03633
摘要： A dispersion-shifted optical fiber is obtained that has a refractive index distribution shape comprising a center core portion of high refractive index, a step core portion of lower refractive index than the center core portion, provided about the outer circumference thereof, and clad of lower refractive index than the step core portion, provided about the outer circumference of the step core, in which, by suitably setting structural parameters, both Aeff expansion and dispersion slope reduction are satisfactorily effected, simultaneously, under conditions that the optical fiber is substantially single-mode, and bending loss is held down to 100 dB/m or lower.
摘要翻译：得到具有折射率分布形状的色散位移光纤，其折射率分布形状包括高折射率的中心纤芯部分，具有比中心纤芯部分低的折射率的阶梯形芯部分，围绕其外周设置，下部包层通过适当地设定结构参数，可以令人满意地实现Aeff膨胀和色散斜率的减小，同时，在光纤基本上是单相的条件下，模式，弯曲损耗保持在100dB / m以下。

8. 发明授权

US07212281B2 Optical fiber polarization mode dispersion measurement method and measurement device 有权
标题翻译：光纤偏振模色散测量方法及测量装置
公开(公告)号：US07212281B2
公开(公告)日：2007-05-01
申请号：US10521236
申请日：2003-07-18
申请人： Shoji Tanigawa , Tomoharu Sagawa , Masataka Ikeda , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
发明人： Shoji Tanigawa , Tomoharu Sagawa , Masataka Ikeda , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
IPC分类号： G01N21/00
CPC分类号： G01M11/3181
摘要： A method of measuring polarization mode dispersion of an optical fiber includes inputting linearly polarized pulse light into an optical fiber, separating the input linearly polarized light from backscattered light from the optical fiber, detecting a light intensity of the backscattered light as time series data since the generation of the pulse light, calculating a fluctuation of the detected light intensity in the time series data, and evaluating polarization mode dispersion in the optical fiber, based on the calculated fluctuation value.
摘要翻译：测量光纤的偏振模色散的方法包括将线性偏振脉冲光输入到光纤中，将输入的线性偏振光与来自光纤的反向散射光分离，从后向散射光的光强度作为时间序列数据，从产生脉冲光，计算时间序列数据中的检测光强度的波动，并且基于所计算的波动值来评估光纤中的偏振模色散。

9. 发明授权

US07062136B2 Optical fiber and optical transmission path 有权
标题翻译：光纤和光传输路径
公开(公告)号：US07062136B2
公开(公告)日：2006-06-13
申请号：US10440263
申请日：2003-05-19
申请人： Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
发明人： Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
IPC分类号： G02B6/22
CPC分类号： G02B6/03694 , G02B6/02247 , G02B6/02285 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/03666 , G02B6/29377
摘要： Under condition that a non-circularity ratio is 5% or lower and a thermal expansion coefficient of a glass which forms the core is α1 and a thermal expansion of a glass which forms the cladding is α2, the difference of coefficients is controlled such that a formula −2.5×10−7/° C.≦α1 −α2≦1.0×10−7/° C. is satisfied so as to maintain a polarization mode dispersion to be 0.03 ps/km0.5 or lower. The difference of coefficients is further controlled such that a formula −1.5×10−7/° C.≦α1−α2≦0/° C. is satisfied so as to maintain a polarization mode dispersion to be 0.015 ps/km0.5 or lower. By doing this, birefringence is reduced by adjusting the thermal expansion coefficient in a core and a cladding; thus providing an optical fiber, and an optical transmission path using the optical fiber, having preferable PMD for high speed transmission.
摘要翻译：在非圆度比为5％以下，形成芯的玻璃的热膨胀系数为α1，形成包层的玻璃的热膨胀为α2的条件下，将系数差控制为满足公式-2.5×10 -7 /℃。<=α1 -al 2≤1.0×10 -7 -7℃/℃以保持极化模式色散为0.03ps / km <0.5或更低。进一步控制系数的差异，使得满足式-1.5×10 -7 /℃。=α1-α2 <= 0 /℃，以便保持偏振模色散为0.015ps / km以下0.5以下。通过这样做，通过调节芯和包层中的热膨胀系数来减少双折射; 从而提供一种光纤，以及使用该光纤的光传输路径，具有优选用于高速传输的PMD。

10. 发明授权

US06785453B1 Dispersion shifted optical fiber 失效
标题翻译：色散位移光纤
公开(公告)号：US06785453B1
公开(公告)日：2004-08-31
申请号：US09786855
申请日：2001-03-09
申请人： Shoichiro Matsuo , Shoji Tanigawa
发明人： Shoichiro Matsuo , Shoji Tanigawa
IPC分类号： G02B626
CPC分类号： G02B6/03666 , G02B6/02019 , G02B6/02238 , G02B6/03611 , G02B6/03633 , G02B6/03644 , G02B6/0365
摘要： A dispersion shifted optical fiber comprising a core and cladding provided at an outer periphery of the core, and having a refractive index profile in which the core is provided with a central core portion and a peripheral core portion having a higher refractive index than the central core portion provided at an outer periphery of the central core portion, and the cladding has a lower refractive index than the peripheral core portion, wherein, by appropriately setting the structural parameters, it is possible to provide a dispersion shifted optical fiber that is essentially single mode and is capable of fulfilling the condition of a bending loss of 100 dB/m or less, and that also provides a sufficient increase in the effective core area and a reduction in the dispersion slope.
摘要翻译：一种色散位移光纤，包括设置在芯的外周的芯和包层，并且具有折射率分布，其中芯具有中心芯部分和具有比中心芯部更高的折射率的外围芯部分部分设置在中心芯部分的外周，并且包层具有比外围芯部更低的折射率，其中，通过适当地设定结构参数，可以提供基本上单模的色散位移光纤并且能够实现100dB / m以下的弯曲损耗的条件，并且还提供有效芯面积的充分增加和色散斜率的减小。

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