公开(公告)号：US08395762B2

公开(公告)日：2013-03-12

申请号：US12647267

申请日：2009-12-24

申请人： Masaaki Hirano ,  Toshiki Taru

发明人： Masaaki Hirano ,  Toshiki Taru

IPC分类号： G01N21/00 ,  H04B10/08 ,  H04B17/00

CPC分类号： G01M11/338

摘要： Highly accurate measurement of chromatic dispersions of a device under test that is an optical component is enabled with a simple structure comprising: propagating pump light having a wavelength λpump and probe light having a wavelength λprobe through the device; calculating the generation efficiency of the idler light with respect to the wavelength λpump by measuring the power of idler light having a wavelength λidler output from the device according to four-wave mixing generated in the device; seeking the frequency difference or wavelength difference between the pump light and the probe light that makes an extremum of generation efficiency of the idler light; calculating phase mismatch among the pump light wavelength having such frequency difference or wavelength difference, the probe light wavelength, and the idler light wavelength; and on the basis of such calculation results, calculating the chromatic dispersion of the device at the wavelength λpump.

摘要翻译： 通过简单的结构实现了作为光学部件的被测器件的色散的高精度测量，包括：通过器件传播具有波长λpump的泵浦光和具有波长λ探针的探测光; 通过根据在装置中产生的四波混频测量从器件输出的具有波长λidler的惰性光的功率来计算相对于波长λpump的惰轮光的发生效率; 寻求激发光的发光效率极值的泵浦光和探测光之间的频差或波长差; 计算具有这样的频率差或波长差的泵浦光波长，探测光波长和惰轮波长的相位失配; 并且基于这样的计算结果，计算波长λpump处的器件的色散。

公开(公告)号：US20120087626A1

公开(公告)日：2012-04-12

申请号：US13377868

申请日：2011-01-26

申请人： Takuji Nagashima ,  Toshiki Taru ,  Takashi Sasaki

发明人： Takuji Nagashima ,  Toshiki Taru ,  Takashi Sasaki

IPC分类号： G02B6/028

CPC分类号： G02B6/02042

摘要： A multi-core optical fibre 1A in which a plurality of cores can easily be identified even in the case where they are symmetrically arranged in its section has seven cores 10 to 16, a visual recognition marker 20, and a shared cladding 30 enclosing the seven cores 10 to 16 and the visual recognition marker 20. The cores 10 to 16 and the visual recognition marker 20 extend along the fibre-axis direction. The respective refractive index of the cores 10 to 16 is higher than the refractive index of the cladding 30. The refractive index of the visual recognition marker 20 differs from that of the cladding 30. In the cross-section perpendicular to the fibre-axis, the cores 10 to 16 are arranged such that they have 6-fold rotational symmetry and line symmetry. The visual recognition marker 20 is arranged at a position which breaks such symmetry.

摘要翻译： 即使在其部分对称布置的情况下，即使容易识别多个芯的多芯光纤1A也具有七个磁芯10至16，视觉识别标记20和包围七个磁芯的共享包层30 芯10至16和视觉识别标记20.芯10至16和视觉识别标记20沿着光纤轴方向延伸。 芯10至16的相应折射率高于包层30的折射率。视觉识别标记20的折射率与包层30的折射率不同。在垂直于纤维轴的横截面中， 芯10至16被布置成使得它们具有6倍的旋转对称性和线对称性。 视觉识别标记20被布置在破坏这种对称的位置。

公开(公告)号：US20110141757A1

公开(公告)日：2011-06-16

申请号：US12920037

申请日：2009-02-23

申请人： Toshiki Taru ,  Jonathan Knight ,  Tim Birks ,  David Bird

发明人： Toshiki Taru ,  Jonathan Knight ,  Tim Birks ,  David Bird

IPC分类号： G02B6/02 ,  G02B6/26

CPC分类号： G02B6/0238 ,  G02B6/02323 ,  G02B6/02352

摘要： All solid photonic bandgap optical fiber comprising a core region and a cladding region is disclosed. The cladding region surrounding the core region includes a background optical material having a first refractive index and elements arranged in a two-dimensional periodic structure. In one embodiment, each of the elements comprises a center part and peripheral part having a higher refractive than the central part. In other embodiments, each element comprises a plurality of rods having a higher refractive index higher than the fist, the rods of each element arranged in a circle or polygon. Light transmission apparatus and methods of using the fiber are also disclosed.

摘要翻译： 公开了包括芯区域和包层区域的所有固体光子带隙光纤。 围绕芯区域的包层区域包括具有第一折射率的背景光学材料和以二维周期结构排列的元件。 在一个实施例中，每个元件包括具有比中心部分更高的折射率的中心部分和周边部分。 在其他实施例中，每个元件包括多个杆，其折射率高于拳头，每个元件的杆布置成圆形或多边形。 还公开了光传输装置和使用该光纤的方法。

公开(公告)号：US07643715B2

公开(公告)日：2010-01-05

申请号：US12081229

申请日：2008-04-11

申请人： Toshiki Taru ,  Jonathan Cave Knight

发明人： Toshiki Taru ,  Jonathan Cave Knight

IPC分类号： G02B6/02

CPC分类号： G02B6/02323 ,  H01S3/302 ,  H04B10/2537

摘要： An optical transmission system comprising a laser light source arranged to emit light having a frequency ω; and an optical transmission line adapted to guide the light, wherein said optical transmission line includes a photonic bandgap optical fibre having a core guided mode at frequency ω and an attenuation band at a frequency of ω-13 THz. The optical transmission system suppresses Raman scattered light thereby allowing high optical powers to be transmitted through optical fibre.

摘要翻译： 一种光传输系统，包括被布置成发射具有频率ω的光的激光光源; 以及适于引导光的光传输线，其中所述光传输线包括具有频率ω的核心引导模式和ω-13THz频率处的衰减频带的光子带隙光纤。 光传输系统抑制拉曼散射光，从而允许高光功率通过光纤传输。

公开(公告)号：US06728458B2

公开(公告)日：2004-04-27

申请号：US10082083

申请日：2002-02-26

申请人： Toshiki Taru ,  Shinji Ishikawa ,  Akira Inoue

发明人： Toshiki Taru ,  Shinji Ishikawa ,  Akira Inoue

IPC分类号： G02B622

CPC分类号： G02B6/03694 ,  C03B37/01413 ,  C03B37/01466 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/18 ,  C03B2203/23 ,  G02B6/021 ,  G02B6/02119 ,  G02B6/03627

摘要： An optical fiber comprises a core region, an inner cladding region, and an outer cladding region. Each of the core region and inner cladding region is doped with GeO2, whereas the inner cladding region is also doped with F element. The core region has a refractive index higher than each of the refractive index of the inner cladding region and the refractive index of the outer cladding region. Each of the core region and inner cladding region doped with GeO2 has a UV photosensitivity. The deviation in concentration distribution of GeO2 added to the inner cladding region is so small that the deviation in UV photosensitivity in the inner cladding region is ±10% or less.

摘要翻译： 光纤包括芯区域，内包层区域和外包层区域。 芯区域和内包层区域均掺杂有GeO 2，而内包层区域也掺杂有F元素。 芯区域的折射率高于内包层区域的折射率和外包层区域的折射率。 掺杂有GeO 2的芯区域和内包层区域都具有UV光敏性。 添加到内包层区域的GeO 2的浓度分布偏差如此小，使得内包层区域的紫外线光敏性的偏差为±10％以下。

公开(公告)号：US08433166B2

公开(公告)日：2013-04-30

申请号：US13377868

申请日：2011-01-26

申请人： Takuji Nagashima ,  Toshiki Taru ,  Takashi Sasaki

发明人： Takuji Nagashima ,  Toshiki Taru ,  Takashi Sasaki

IPC分类号： G02B6/028

CPC分类号： G02B6/02042

摘要： A multi-core optical fiber 1A in which a plurality of cores can easily be identified even in the case where they are symmetrically arranged in its section has seven cores 10 to 16, a visual recognition marker 20, and a shared cladding 30 enclosing the seven cores 10 to 16 and the visual recognition marker 20. The cores 10 to 16 and the visual recognition marker 20 extend along the fiber-axis direction. The respective refractive index of the cores 10 to 16 is higher than the refractive index of the cladding 30. The refractive index of the visual recognition marker 20 differs from that of the cladding 30. In the cross-section perpendicular to the fiber-axis, the cores 10 to 16 are arranged such that they have 6-fold rotational symmetry and line symmetry. The visual recognition marker 20 is arranged at a position which breaks such symmetry.

摘要翻译： 即使在其部分对称布置的情况下，即使容易识别多个芯的多芯光纤1A也具有七个磁芯10至16，视觉识别标记20和包围七个磁芯的共享包层30 芯10至16和视觉识别标记20.芯10至16和视觉识别标记20沿着光纤轴方向延伸。 芯10至16的相应折射率高于包层30的折射率。视觉识别标记20的折射率与包层30的折射率不同。在垂直于纤维轴的横截面中， 芯10至16被布置成使得它们具有6倍的旋转对称性和线对称性。 视觉识别标记20被布置在破坏这种对称的位置。

公开(公告)号：US20130064513A1

公开(公告)日：2013-03-14

申请号：US13593743

申请日：2012-08-24

申请人： Takuji NAGASHIMA ,  Toshiki Taru ,  Kazuya Kuwahara

发明人： Takuji NAGASHIMA ,  Toshiki Taru ,  Kazuya Kuwahara

IPC分类号： G02B6/02

CPC分类号： G02B6/02366

摘要： An optical fiber has a plurality of holes in a cladding around a core, and has a high failure strength and small transmission loss. The core is made of glass. The cladding surrounds the core, and the holes are formed in the cladding so as to extend along a central axis of the fiber. The holes are formed with constant intervals therebetween along a circle centered on the core, and each hole has a substantially circular cross section. The cladding is sectioned into two claddings. A residual stress in an inner region that is inside a circumcircle of the holes is a compressive stress.

摘要翻译： 光纤在芯周围的包层中具有多个孔，并且具有高的故障强度和较小的传输损耗。 核心由玻璃制成。 包层围绕芯部，并且在包层中形成孔，以沿着纤维的中心轴线延伸。 这些孔沿着以芯为中心的圆形以恒定的间隔形成，并且每个孔具有基本圆形的横截面。 包层被分成两个包层。 在孔的外接圆内的内部区域的残余应力是压缩应力。

公开(公告)号：US20090218706A1

公开(公告)日：2009-09-03

申请号：US12394433

申请日：2009-02-27

申请人： Toshiki TARU

发明人： Toshiki TARU

IPC分类号： B29D11/00

CPC分类号： G02B6/02323 ,  C03B37/0122 ,  C03B2203/42 ,  G02B6/02361

摘要： A method of manufacturing a photonic bandgap fibre comprises preparing composite rods having a central region of a first refractive index, and a surrounding region of a second refractive index. There follow steps of: selectively removing the surface of the composite rods to produce composite rods having a part with a first diameter and a part with a second diameter larger than said first diameter; stacking composite rods around a core rod; inserting the stacked rods into jacket tube to form an assembly; and reducing the jacket tube and stacked rods into fibre. Embodiments may comprise measuring the refractive index of the composite rods to calculate a ratio of diameters of the central region and surrounding region to determine an amount of the surface of the composite rods to remove. Further embodiments may comprise flowing chlorine gas through the assembly to remove impurities or moisture present in the surface of rod and jacket tube of the assembly.

摘要翻译： 制造光子带隙光纤的方法包括制备具有第一折射率中心区域和第二折射率的周围区域的复合棒。 以下步骤：选择性地去除复合棒的表面以产生具有第一直径的部分和具有大于所述第一直径的第二直径的部分的复合棒; 将复合棒堆放在芯棒周围; 将堆叠的棒插入护套管中以形成组件; 并将护套管和堆叠杆缩小成纤维。 实施例可以包括测量复合棒的折射率以计算中心区域和周围区域的直径的比率，以确定要除去的复合棒的表面的量。 另外的实施例可以包括使氯气流过组件以去除存在于组件的杆和套管的表面中的杂质或水分。

公开(公告)号：US20090133445A1

公开(公告)日：2009-05-28

申请号：US11991266

申请日：2006-08-29

申请人： Tetsuya Haruna ,  Toshiki Taru ,  Motoki Kakui ,  Masashi Onishi

发明人： Tetsuya Haruna ,  Toshiki Taru ,  Motoki Kakui ,  Masashi Onishi

IPC分类号： C03B37/02

CPC分类号： C03B37/018 ,  C03B37/01853 ,  C03B37/01869 ,  C03B2201/30 ,  C03B2201/32 ,  C03B2207/32

摘要： A method for manufacturing a glass body containing bismuth, which can be used for manufacturing an optical fiber having a low background-loss is provided. The method includes depositing a glass micro-particle layer on an inner wall of a glass pipe, consolidating the glass micro-particle layer to form a glass layer, reducing of a diameter of the glass pipe having the glass layer on the inner wall of the glass pipe, and collapsing the glass pipe having been reduced in diameter at the diameter-reducing step so as to form the glass body. At the depositing step, the glass micro-particle layer is formed while an organobismuth compound is being supplied into the glass pipe. At the consolidating step, the glass layer is consolidated while an organobismuth compound is being supplied into the glass pipe. The optical fiber is made by drawing the glass body.

摘要翻译： 提供了可用于制造背景损耗低的光纤的含有铋的玻璃体的制造方法。 该方法包括在玻璃管的内壁上沉积玻璃微粒子层，固化玻璃微粒层以形成玻璃层，减少在玻璃管的内壁上具有玻璃层的玻璃管的直径 玻璃管，并且在直径减小步骤中使直径减小的玻璃管塌缩，以形成玻璃体。 在沉积步骤中，形成玻璃微粒层，同时向玻璃管中供应有机铋化合物。 在固结步骤中，玻璃层被固结，而有机铋化合物被供应到玻璃管中。 光纤通过拉制玻璃体制成。

公开(公告)号：US20050284182A1

公开(公告)日：2005-12-29

申请号：US11102877

申请日：2005-04-11

申请人： Toshiki Taru ,  Shinji Ishikawa ,  Tetsuya Haruna ,  Motoki Kakui ,  Takahiro Murata

发明人： Toshiki Taru ,  Shinji Ishikawa ,  Tetsuya Haruna ,  Motoki Kakui ,  Takahiro Murata

IPC分类号： G02B6/00 ,  C03B37/012 ,  C03B37/027 ,  C03B37/075 ,  C03C13/04

CPC分类号： C03C13/046 ,  C03B37/02754 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/36 ,  C03B2205/14 ,  C03B2205/40 ,  C03B2205/72

摘要： There is disclosed a method of manufacturing an optical fiber whose core is made of multi-component glass without fluctuation in its outer diameter and occurrence of sudden breakage thereof, with a technique of unifying a core rod and a cladding tube at the time of drawing, and yet drawing them; and the optical fiber having a multi-component glass core are disclosed.

摘要翻译： 公开了一种制造光纤的方法，该光纤的芯部由多部件玻璃制成，其外径波动并且突然断裂的发生，在拉拔时使芯棒和包层管均匀化的技术， 并画画; 并且公开了具有多组分玻璃芯的光纤。