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    DISPERSION SHIFT OPTICAL FIBER
    1.
    发明申请
    DISPERSION SHIFT OPTICAL FIBER 失效
    分散移动光纤

    公开(公告)号：US20100266250A1

    公开(公告)日：2010-10-21

    申请号：US10514530

    申请日：2003-05-16

    申请人： Kazunori Suzuki ,  Satoki Kawanishi ,  Hirokazu Kubota ,  Masatoshi Tanaka ,  Moriyuki Fujita

    发明人： Kazunori Suzuki ,  Satoki Kawanishi ,  Hirokazu Kubota ,  Masatoshi Tanaka ,  Moriyuki Fujita

    IPC分类号： G02B6/028 ,  G02B6/032

    CPC分类号： G02B6/02338 ,  G02B6/02042 ,  G02B6/02242 ,  G02B6/02276 ,  G02B6/02347 ,  G02B6/02361 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/03688

    摘要： A 1.55 μm band dispersion shifted optical fiber is provided which has a low loss and low dispersion slope. A core region “a” is heavily doped with GeO2 . A core region “b” is composed of pure SiO2 glass. A cladding section is arranged around the core region. The cladding section has a lot of holes extending in the longitudinal direction of the optical fiber. The holes of the cladding section are not located at random, but have a honeycomb structure composed of regular hexagons which have a side length of Λ, and serve as a primitive lattice. The center of the core section has a region having a refractive index higher than that of the periphery of the core section. The core section has the refractive index distribution in which the group velocity dispersion at the operation wavelength of the region becomes the normal dispersion.

    摘要翻译： 提供1.55μm带隙色散位移光纤，具有低损耗和低色散斜率。 核心区域“a”被GeO2重掺杂。 核心区域“b”由纯SiO 2玻璃构成。 围绕芯区域布置包层部分。 包层部具有沿着光纤的长度方向延伸的大量孔。 包层部分的孔不是随机的，而是具有由正方形六边形组成的蜂窝结构，其具有Λ的边长，并且用作原始晶格。 芯部的中心具有折射率高于芯部的周边的区域。 芯部具有折射率分布，其中该区域的工作波长处的群速度色散变为正常色散。

    Dispersion shifted optical fiber
    3.
    发明授权
    Dispersion shifted optical fiber 失效
    色散位移光纤

    公开(公告)号：US08014645B2

    公开(公告)日：2011-09-06

    申请号：US10514530

    申请日：2003-05-16

    申请人： Kazunori Suzuki ,  Satoki Kawanishi ,  Hirokazu Kubota ,  Masatoshi Tanaka ,  Moriyuki Fujita

    发明人： Kazunori Suzuki ,  Satoki Kawanishi ,  Hirokazu Kubota ,  Masatoshi Tanaka ,  Moriyuki Fujita

    IPC分类号： G02B6/028

    CPC分类号： G02B6/02338 ,  G02B6/02042 ,  G02B6/02242 ,  G02B6/02276 ,  G02B6/02347 ,  G02B6/02361 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/03688

    摘要： A 1.55 μm band dispersion shifted optical fiber is provided which has a low loss and low dispersion slope. A core region “a” is heavily doped with GeO2 . A core region “b” is composed of pure SiO2 glass. A cladding section is arranged around the core region. The cladding section has a lot of holes extending in the longitudinal direction of the optical fiber. The holes of the cladding section are not located at random, but have a honeycomb structure composed of regular hexagons which have a side length of Λ, and serve as a primitive lattice. The center of the core section has a region having a refractive index higher than that of the periphery of the core section. The core section has the refractive index distribution in which the group velocity dispersion at the operation wavelength of the region becomes the normal dispersion.

    摘要翻译： 提供1.55μm带隙色散位移光纤，其具有低损耗和低色散斜率。 核心区域“a”被GeO2重掺杂。 核心区域“b”由纯SiO 2玻璃构成。 围绕芯区域布置包层部分。 包层部具有沿着光纤的长度方向延伸的大量孔。 包层部分的孔不是随机的，而是具有由正方形六边形组成的蜂窝结构，其具有Λ的边长，并且用作原始晶格。 芯部的中心具有折射率高于芯部的周边的区域。 芯部具有折射率分布，其中该区域的工作波长处的群速度色散变为正常色散。

    Polarization preserving optical fiber and absolute single polarization optical fiber
    5.
    发明授权
    Polarization preserving optical fiber and absolute single polarization optical fiber 有权
    极化保护光纤和绝对单极化光纤

    公开(公告)号：US07046887B2

    公开(公告)日：2006-05-16

    申请号：US10491068

    申请日：2002-09-26

    申请人： Satoki Kawanishi ,  Kazunori Suzuki ,  Hirokazu Kubota ,  Masatoshi Tanaka ,  Moriyuki Fujita

    发明人： Satoki Kawanishi ,  Kazunori Suzuki ,  Hirokazu Kubota ,  Masatoshi Tanaka ,  Moriyuki Fujita

    IPC分类号： G02B6/17

    CPC分类号： G02B6/024 ,  G02B6/02 ,  G02B6/02338 ,  G02B6/02357 ,  G02B6/105

    摘要： A polarization-maintaining optical fiber and absolutely single-polarization optical fiber are provided which enable long distance transmission maintaining a polarization state of signal light. The polarization-maintaining optical fiber includes a core, photonic crystal cladding, and jacket. The photonic crystal cladding is divided into four segments by broken lines from the center to the periphery. Among a plurality of grating holes in a pair of segments opposed to each other with respect to the core, the diameter of grating holes close to the core is greater than the diameter of grating holes in another pair of segments opposed with each other, and than a grating constant.

    摘要翻译： 提供了保持偏振的光纤和绝对单偏振光纤，其能够保持信号光的偏振状态的长距离传输。 偏振保持光纤包括芯，光子晶体包层和护套。 光子晶体包层由从中心到外围的虚线分成四段。 在相对于芯彼此相对的一对区段中的多个光栅孔中，靠近芯的光栅孔的直径大于彼此相对的另一对区段中的光栅孔的直径，并且比 光栅常数。

    Polarization retaining photonic crystal fiber
    6.
    发明申请
    Polarization retaining photonic crystal fiber 审中-公开
    偏振保持光子晶体光纤

    公开(公告)号：US20050084223A1

    公开(公告)日：2005-04-21

    申请号：US10501983

    申请日：2003-01-23

    申请人： Masatoshi Tanaka ,  Shinya Yamadori ,  Moriyuki Fujita ,  Satoki Kawanishi ,  Kazunori Suzuki ,  Hirokazu Kubota

    发明人： Masatoshi Tanaka ,  Shinya Yamadori ,  Moriyuki Fujita ,  Satoki Kawanishi ,  Kazunori Suzuki ,  Hirokazu Kubota

    IPC分类号： G02B6/00 ,  C03B37/012 ,  G02B6/02 ,  G02B6/024 ,  G02B6/032 ,  G02B6/17 ,  G02B6/20

    CPC分类号： G02B6/024 ,  C03B37/01217 ,  C03B37/0122 ,  C03B2203/14 ,  C03B2203/30 ,  C03B2203/42 ,  G02B6/02333 ,  G02B6/02347 ,  G02B6/02357

    摘要： A polarization-maintaining photonic crystal fiber 10 includes six thin holes 4a and 4b adjacent to a core 1. Among these holes 4a and 4b, a pair of holes 4b at opposite sides of the core 1 have a diameter greater than that of the other four thin holes 4a, and therefore, the polarization-maintaining photonic crystal fiber 10 has polarization-maintaining ability. An overclad layer 3 exists around the clad layer 2 which includes a large number of thin holes 4a and 4b around the core 1. The overclad layer 3 includes a pair of marking portions 5 at opposite sides of the core 1. The marking portions 5 are holes which can be seen at positions different from the clad layer 2 when the fiber 10 is viewed from a position right above the fiber 10 in the drawing. In this way, the direction of the polarization plane of the polarization-maintaining photonic crystal fiber 10 is identified.

    摘要翻译： 偏振保持光子晶体光纤10包括与芯1相邻的六个细孔4a和4b。 在这些孔4a和4b中，在芯1的相对侧的一对孔4b的直径大于其他四个细孔4a的直径，因此，保偏光子晶体光纤10具有极化 维持能力。 外包层3存在于包层2周围，该包层2包括围绕芯1的大量薄孔4a和4b。 外包层3在芯1的相对侧包括一对标记部分5。 标记部5是从图中的纤维10的正上方观察纤维10时，可以看到与包覆层2不同的位置的孔。 以这种方式，识别出偏振保持光子晶体光纤10的偏振面的方向。