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11. 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。

12. 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。

13. 发明申请

US20080013906A1 OPTICAL FIBER, TRANSMISSION SYSTEM, AND WAVELENGTH DIVISION MULTIPLEXING SYSTEM 有权
标题翻译：光纤，传输系统和波长部分多路复用系统
公开(公告)号：US20080013906A1
公开(公告)日：2008-01-17
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： G02B6/036
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。

14. 发明授权

US06546177B1 Dispersion shifted optical fiber 失效
标题翻译：色散位移光纤
公开(公告)号：US06546177B1
公开(公告)日：2003-04-08
申请号：US09830027
申请日：2001-04-20
申请人： Shoichiro Matsuo , Shoji Tanigawa , Tomio Abiru
发明人： Shoichiro Matsuo , Shoji Tanigawa , Tomio Abiru
IPC分类号： G02B602
CPC分类号： G02B6/03666 , C03B37/01413 , C03B37/01807 , C03B2201/02 , C03B2201/12 , C03B2201/31 , C03B2203/22 , C03B2203/36 , G02B6/02019 , G02B6/02238 , G02B6/03611 , G02B6/03633
摘要： In the present invention, by forming a dispersion shifted optical fiber that has a refractive index profile comprising: a central core portion 1; a step core portion 2 provided at an outer periphery of the central core portion 1 and having a refractive index lower than that of the central core portion 1; and cladding 7 provided at an outer periphery of the step core portion 2 and having a refractive index lower than that of the step core portion 2, and which dispersion shifted optical fiber has, in a used wavelength band that is selected from between 1490 and 1625 nm, chromatic dispersion values of 7 to 15 ps/km/nm, an Aeff of 60 to 150 &mgr;m2, a dispersion slope of 0.09 ps/km/nm2 or less, a bending loss of 100 dB/m or less, and a cutoff wavelength that provides essentially single mode transmission, it is possible to reduce the cost of the system and to achieve n improvement in the transmission characteristics.
摘要翻译：在本发明中，通过形成具有折射率分布的色散位移光纤，包括：中心芯部分1; 设置在中心芯部1的外周并具有比中央芯部1的折射率低的折射率的台阶芯部2; 以及设置在台阶芯部2的外周并且折射率低于台阶芯部2的折射率的包层7，并且该色散位移光纤具有在从1490到1625之间的使用波长带中 nm，色散值为7〜15ps / km / nm，Aeff为60〜150mum2，色散斜率为0.09ps / km / nm2以下，弯曲损耗为100dB / m以下，截止频率为提供基本单模传输的波长，可以降低系统的成本并实现传输特性的提高。

15. 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。

16. 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。

17. 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。

18. 发明授权

US07606460B2 Optical fiber and transmission system, and wavelength division multiplexing system 有权
标题翻译：光纤和传输系统以及波分复用系统
公开(公告)号：US07606460B2
公开(公告)日：2009-10-20
申请号：US11738275
申请日：2007-04-20
申请人： Shoichiro Matsuo , Shoji Tanigawa , Kuniharu Himeno
发明人： Shoichiro Matsuo , Shoji Tanigawa , Kuniharu Himeno
IPC分类号： G02B6/00
CPC分类号： G02B6/03611 , G02B6/03627 , G02B6/03633 , G02B6/03644 , G02B6/0365
摘要： An optical fiber comprises a center core and a cladding located at an outer periphery of the core, wherein the core comprises at least one codoped layer made from silica glass doped with germanium and fluorine, and at least one lower-concentration codoped layer made from silica glass doped with germanium, or silica glass that is doped with germanium and fluorine wherein an amount of fluorine in the lower-concentration codoped layer is smaller than an amount of fluorine in the codoped layer.
摘要翻译：光纤包括位于芯的外周的中心芯和包层，其中芯包括由掺杂有锗和氟的二氧化硅玻璃制成的至少一个共掺层，以及由二氧化硅制成的至少一个低浓度共掺层掺杂有锗的玻璃或掺杂有锗和氟的二氧化硅玻璃，其中低浓度掺杂层中的氟的量小于共掺层中的氟的量。

19. 发明授权

US07298934B2 Optical fiber and method of measuring polarization mode dispersion of optical fiber 有权
标题翻译：光纤和光纤偏振模色散测量方法
公开(公告)号：US07298934B2
公开(公告)日：2007-11-20
申请号：US11405407
申请日：2006-04-18
申请人： Ryuichiro Goto , Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno
发明人： Ryuichiro Goto , Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno
IPC分类号： G02B6/00 , G01N21/00 , H04J14/02
CPC分类号： G02B6/02285 , G01M11/3181
摘要： A method of measuring polarization mode dispersion (PMD) of an optical fiber, includes estimating PMD when an optical fiber is formed as an optical cable, from a beat length when the optical fiber is wound around a bobbin, and an average coupling length when the optical fiber is formed as the optical cable.
摘要翻译：测量光纤的偏振模色散（PMD）的方法包括：当光纤缠绕在绕线管上时，从形成光纤作为光缆的估计PMD，以及当光纤缠绕在绕线管上时的平均耦合长度形成光纤作为光缆。

20. 发明申请

US20070189699A1 OPTICAL FIBER AND TRANSMISSION SYSTEM, AND WAVELENGTH DIVISION MULTIPLEXING SYSTEM 有权
标题翻译：光纤和传输系统，以及波长分割多路复用系统
公开(公告)号：US20070189699A1
公开(公告)日：2007-08-16
申请号：US11738275
申请日：2007-04-20
申请人： Shoichiro MATSUO , Shoji Tanigawa , Kuniharu Himeno
发明人： Shoichiro MATSUO , Shoji Tanigawa , Kuniharu Himeno
IPC分类号： G02B6/00
CPC分类号： G02B6/03611 , G02B6/03627 , G02B6/03633 , G02B6/03644 , G02B6/0365
摘要： An optical fiber comprises a center core and a cladding located at an outer periphery of the core, wherein the core comprises at least one codoped layer made from silica glass doped with germanium and fluorine, and at least one lower-concentration codoped layer made from silica glass doped with germanium, or silica glass that is doped with germanium and fluorine wherein a dope amount of the fluorine is smaller than a dope amount of the fluorine in the codoped layer.
摘要翻译：光纤包括位于芯的外周的中心芯和包层，其中芯包括由掺杂有锗和氟的二氧化硅玻璃制成的至少一个共掺层，以及由二氧化硅制成的至少一个低浓度共掺层掺杂有锗的玻璃或掺杂有锗和氟的二氧化硅玻璃，其中掺杂量的氟小于共掺层中的氟的掺杂量。

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