公开(公告)号：US08456737B2

公开(公告)日：2013-06-04

申请号：US12985491

申请日：2011-01-06

申请人： Masahiro Kashiwagi ,  Kuniharu Himeno

发明人： Masahiro Kashiwagi ,  Kuniharu Himeno

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/06733 ,  G02B6/03611 ,  H01S3/0672 ,  H01S3/0675 ,  H01S3/0804 ,  H01S3/094003 ,  H01S3/094069 ,  H01S3/09408 ,  H01S3/09415 ,  H01S3/1618

摘要： The invention provides an amplification optical fiber, which can output light with a good beam quality even when a higher-order mode is excited, and an optical fiber amplifier using the amplification optical fiber.An amplification optical fiber 50 has a core 51 and a clad 52 covering the core 51. The core 51 propagates light with a predetermined wavelength in at least an LP01 mode, and an LP02 mode, and an LP03 mode. When the LP01 mode, the LP02 mode, and the LP03 mode are standardized by power, in at least a part of a region where the intensity of the LP01 mode is larger than at least one of the intensities of the LP02 mode and the LP03 mode, the active element is added to the core 51 at a higher concentration than the central portion of the core.

摘要翻译： 本发明提供了一种放大光纤，其即使在激发高阶模式时也能输出具有良好光束质量的光，以及使用放大光纤的光纤放大器。 放大光纤50具有芯51和覆盖芯51的包层52.芯51以至少LP01模式和LP02模式和LP03模式传播具有预定波长的光。 当LP01模式，LP02模式和LP03模式通过功率标准化时，在LP01模式的强度大于LP02模式和LP03模式的强度中的至少一个的区域的至少一部分中 以比芯的中心部分更高的浓度将活性元素加入到芯51中。

公开(公告)号：US08163084B2

公开(公告)日：2012-04-24

申请号：US11938541

申请日：2007-11-12

申请人： Yoshihiro Terada ,  Mitsuru Kamikatano ,  Kuniharu Himeno ,  Bunsho Ohtani ,  Takamune Yamagami ,  Tsukasa Torimoto

发明人： Yoshihiro Terada ,  Mitsuru Kamikatano ,  Kuniharu Himeno ,  Bunsho Ohtani ,  Takamune Yamagami ,  Tsukasa Torimoto

IPC分类号： C30B29/60

CPC分类号： C23C18/14

摘要： The invention relates to nanostructure and its manufacturing method. In the manufacturing method of a nanostructure, first anisotropic crystalline particles, connectors having end to be connected to a specific crystal face of each of said crystalline particles, and second particles to be connected to the other end of each of said connectors are prepared. First ends of the connectors are connected to specific crystal faces of the first crystalline particles, and simultaneously or before or after the connection, the second ends of the connectors are connected to the second particles. A nanostructure formed by this method has a three-dimensional structure which does not have a closest packing structure.

摘要翻译： 本发明涉及纳米结构及其制造方法。 在纳米结构体的制造方法中，准备了第一各向异性结晶粒子，具有与每个所述结晶粒子的特定结晶面连接的连接器和与所述连接器的另一端连接的第二粒子。 连接器的第一端连接到第一结晶颗粒的特定晶面，同时或连接之前或之后，连接器的第二端连接到第二颗粒。 通过该方法形成的纳米结构具有不具有最密封结构的三维结构。

公开(公告)号：US20100276822A1

公开(公告)日：2010-11-04

申请号：US12837109

申请日：2010-07-15

申请人： Masashi Ikeda ,  Naritoshi Yamada ,  Kuniharu Himeno ,  Michihiro Nakai ,  Tomoharu Kitabayashi

发明人： Masashi Ikeda ,  Naritoshi Yamada ,  Kuniharu Himeno ,  Michihiro Nakai ,  Tomoharu Kitabayashi

IPC分类号： B29D11/00

CPC分类号： H01S3/06716 ,  C03B37/01838 ,  C03B37/01853 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2201/36 ,  C03B2203/23 ,  C03C13/045 ,  C03C13/046 ,  G02B6/03633 ,  G02B6/03638

摘要： A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less.

摘要翻译： 本发明的稀土掺杂的芯光纤包括包含至少含有铝和镱的二氧化硅玻璃的芯和在芯周围设置的包层，其包含比芯的折射率低的石英玻璃，其中 芯的铝浓度为2质量％以上，并且以这样的浓度将镱掺杂到芯中，使得在芯中包含的镱的吸收带中出现的波长976nm附近的吸收带表现出峰 吸收系数为800dB / m以下。

公开(公告)号：US20100260212A1

公开(公告)日：2010-10-14

申请号：US12757190

申请日：2010-04-09

申请人： Masakuni Mimuro ,  Kuniharu Himeno ,  Tomoharu Kitabayashi

发明人： Masakuni Mimuro ,  Kuniharu Himeno ,  Tomoharu Kitabayashi

IPC分类号： H01S3/13 ,  H01S3/30

CPC分类号： H01S3/067 ,  H01S3/06754 ,  H01S3/09408 ,  H01S3/1301 ,  H01S3/1312 ,  H01S3/1618

摘要： A fiber output stabilizer according to an aspect of the invention stabilizes output light from a rare-earth doped optical fiber in which at least one kind of a rare-earth element is added to a core. The fiber output stabilizer includes: a monitoring light source that emits monitoring light having a wavelength shorter than that of excitation light exciting the rare-earth element; an optical multiplexer that multiplexes the monitoring light into the excitation light; an optical demultiplexer that demultiplexes the monitoring light passing through the rare-earth doped optical fiber; and a passing light detector that detects light intensity of the monitoring light from the optical demultiplexer.

摘要翻译： 根据本发明的一个方面的光纤输出稳定器稳定了将掺杂有至少一种稀土元素的稀土掺杂光纤的输出光稳定在芯上。 光纤输出稳定器包括：监测光源，其发射波长短于激发稀土元素的激发光的波长的监测光; 一个光复用器，将监控光复用到激发光中; 光分路器，其对通过稀土掺杂光纤的监控光进行解复用; 以及通过光检测器，其检测来自光解复用器的监视光的光强度。

公开(公告)号：US20100067860A1

公开(公告)日：2010-03-18

申请号：US12604913

申请日：2009-10-23

申请人： Masashi IKEDA ,  Naritoshi YAMADA ,  Kuniharu HIMENO ,  Michihiro NAKAI ,  Tomoharu KITABAYASHI

发明人： Masashi IKEDA ,  Naritoshi YAMADA ,  Kuniharu HIMENO ,  Michihiro NAKAI ,  Tomoharu KITABAYASHI

IPC分类号： G02B6/02 ,  G02B6/00

CPC分类号： G02B6/03688 ,  G02B6/02033 ,  G02B6/03633 ,  H01S3/06716 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/0675 ,  H01S3/094007 ,  H01S3/1618 ,  H01S3/1693 ,  H01S3/176

摘要： A rare earth-doped core optical fiber includes a core comprising a silica glass containing at least aluminum and ytterbium, a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, and a polymer layer provided on the outer circumference of the clad and having a lower refractive index than that of the clad, wherein aluminum and ytterbium are doped into the core such that a loss increase by photodarkening, TPD, satisfies the following inequality (A). By this rare earth-doped core optical fiber, it is possible to manufacture an optical fiber laser capable of maintaining a sufficient laser oscillation output even when used for a long period of time. TPD≧10{−0.655*(DAl)−4.304*exp{−0.00343*(AYb)}+1.274}  (A)

摘要翻译： 掺杂稀土的芯光纤包括包含至少包含铝和镱的二氧化硅玻璃的芯体，围绕芯部设置的包层，其包含比芯的折射率低的石英玻璃，以及设置在 包层的外周，折射率低于包层的折射率，其中铝和镱被掺杂到芯中，使得通过光暗化TPD的损耗增加满足以下不等式（A）。 通过这种稀土掺杂的芯光纤，即使长时间使用，也可以制造能够保持足够的激光振荡输出的光纤激光器。 TPD≥10{-0.655 *（DA1）-4.304 * exp {-0.00343 *（AYb）} + 1.274}（A）

公开(公告)号：US07496261B2

公开(公告)日：2009-02-24

申请号：US11203890

申请日：2005-08-15

申请人： Kazuhiko Aikawa ,  Yutaka Nagasawa ,  Shogo Shimizu ,  Takaaki Suzuki ,  Masakazu Nakayama ,  Kuniharu Himeno ,  Ryozo Yamauchi ,  Keiji Ohashi ,  Munehisa Fujimaki

发明人： Kazuhiko Aikawa ,  Yutaka Nagasawa ,  Shogo Shimizu ,  Takaaki Suzuki ,  Masakazu Nakayama ,  Kuniharu Himeno ,  Ryozo Yamauchi ,  Keiji Ohashi ,  Munehisa Fujimaki

IPC分类号： G02B6/036

CPC分类号： G02B6/02009 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/02395 ,  G02B6/03627 ,  G02B6/03644

摘要： A dispersion compensating optical fiber for NZ-DSFs, includes: an uncovered dispersion compensating optical fiber; a double-layered resin coating disposed around the uncovered dispersion compensating optical fiber; and an outer coating layer having a thickness of 3 to 7 μm, containing silicone in an amount of 1 to 5% by weight, and disposed around the double-layered resin coating. The outer diameter of the uncovered dispersion compensating optical fiber is in a range from 90 to 125 μm, an outer diameter of the dispersion compensating optical fiber is in a range from 180 to 250 μm, and the amount of silicone contained in the outer coating layer is determined such that an adhesive property of the outer coating layer is 1 gf/mm or less.

摘要翻译： 用于NZ-DSF的色散补偿光纤包括：未覆盖的色散补偿光纤; 设置在未覆盖的色散补偿光纤周围的双层树脂涂层; 以及厚度为3〜7μm的外涂层，含有1〜5重量％的硅氧烷，并且设置在双层树脂涂层的周围。 未覆盖的色散补偿光纤的外径在90〜125μm的范围内，色散补偿光纤的外径在180〜250μm的范围内，外涂层的硅氧烷的含量 确定为外涂层的粘合性为1gf / mm以下。

公开(公告)号：US20080247721A1

公开(公告)日：2008-10-09

申请号：US12061417

申请日：2008-04-02

申请人： Ning GUAN ,  Katsuhiro TAKENAGA ,  Kuniharu HIMENO

发明人： Ning GUAN ,  Katsuhiro TAKENAGA ,  Kuniharu HIMENO

IPC分类号： G02B6/032

CPC分类号： C03B37/01208 ,  C03B37/01248 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/42 ,  G02B6/02328 ,  G02B6/02333 ,  G02B6/02338 ,  G02B6/02347

摘要： A photonic band gap fiber is provided having multiple air holes in a silica portion extending in the longitudinal direction of the fiber. The fiber includes a cladding containing an air hole periodic structure in an extended triangular lattice configuration, wherein first rows each having a number of air holes at a first pitch are arranged alternately in the cross section of the fiber with multiple second rows of air holes each with multiple air holes at a second pitch which is twice the first pitch. The fiber further includes an air hole core.

公开(公告)号：US07406235B2

公开(公告)日：2008-07-29

申请号：US10934723

申请日：2004-09-07

申请人： Ning Guan ,  Katsuhiro Takenaga ,  Kuniharu Himeno

发明人： Ning Guan ,  Katsuhiro Takenaga ,  Kuniharu Himeno

IPC分类号： G02B6/02

CPC分类号： G02B6/0288 ,  G02B6/03622 ,  G02B6/03694

摘要： A graded-index multimode fiber includes a core made of silica glass, the core having a central region and an outer peripheral region, and a cladding which is provided at an outer periphery of the core. The central region contains one of germanium and phosphorus, and the outer peripheral region contains fluorine.

摘要翻译： 分级折射率多模光纤包括由石英玻璃制成的芯，芯具有中心区域和外周区域，以及设置在芯的外周的包层。 中心区含有锗和磷之一，外周区含有氟。

公开(公告)号：US20080025679A1

公开(公告)日：2008-01-31

申请号：US11864375

申请日：2007-09-28

申请人： Masashi IKEDA ,  Masakazu NAKAYAMA ,  Kuniharu HIMENO ,  Masaaki OHTSUKA ,  Masakazu OOHASHI ,  Daiichiro TANAKA

发明人： Masashi IKEDA ,  Masakazu NAKAYAMA ,  Kuniharu HIMENO ,  Masaaki OHTSUKA ,  Masakazu OOHASHI ,  Daiichiro TANAKA

IPC分类号： G02B6/02

CPC分类号： G02B6/024 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/23 ,  C03B2203/30 ,  C03C13/046 ,  C03C13/048 ,  G02B6/02 ,  G02B6/2551 ,  H01S3/06708 ,  H01S3/06729

摘要： An optical fiber that includes a core containing a first concentration of germanium, an inner cladding arranged on the core, the inner cladding containing a second concentration of germanium and having a first diffusion coefficient, and an outer cladding arranged on the inner cladding, the outer cladding having a second diffusion coefficient, where the first diffusion coefficient is larger than the second diffusion coefficient, and where the first concentration of germanium is about 200% or more of the second concentration of germanium. An optical fiber constructed in this manner can be spliced with an optical fiber having a different MFD, such as a single-mode optical fiber or an erbium-doped optical fiber, with low splice loss and a sufficient splicing strength.

摘要翻译： 一种光纤，其包括含有锗的第一浓度的芯，设置在芯上的内包层，包含锗的第二浓度并具有第一扩散系数的内包层以及布置在内包层上的外包层 包层具有第二扩散系数，其中第一扩散系数大于第二扩散系数，并且其中第一浓度的锗为第二浓度的锗的约200％以上。 以这种方式构造的光纤可以用具有不同MFD的光纤（例如单模光纤或掺铒光纤）进行拼接，具有低接头损耗和足够的拼接强度。

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。