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    Higher order mode dispersion compensating fiber and mode converter for higher order fiber
    1.
    发明授权
    Higher order mode dispersion compensating fiber and mode converter for higher order fiber 失效
    高阶模式色散补偿光纤和模式转换器用于高阶光纤

    公开(公告)号：US07412128B2

    公开(公告)日：2008-08-12

    申请号：US11739589

    申请日：2007-04-24

    申请人： Ning Guan ,  Kazuhiko Aikawa ,  Masashi Ikeda ,  Kuniharu Himeno ,  Koichi Harada

    发明人： Ning Guan ,  Kazuhiko Aikawa ,  Masashi Ikeda ,  Kuniharu Himeno ,  Koichi Harada

    IPC分类号： G02B6/26 ,  G02B6/42

    CPC分类号： G02B6/03644 ,  G02B6/02261 ,  G02B6/03627 ,  G02B6/14 ,  G02B6/268 ,  G02B6/2835

    摘要： A higher order mode dispersion compensating fiber includes an optical fiber and a first loss layer which is provided within the fiber and which attenuates a lower order mode propagating through the optical fiber while not attenuating a higher order mode which is higher than the lower order mode. A dispersion compensating fiber mode converter for a higher order fiber includes a single mode fiber; a higher order mode dispersion compensating fiber; and a fused and extended portion which has been formed by fusing and extending the single mode fiber and the higher order mode fiber. The fused and extended portion converts between the LP01 mode of the single mode fiber and the LP02 mode of the higher order mode dispersion compensating fiber.

    摘要翻译： 高阶模式色散补偿光纤包括光纤和第一损耗层，该第一损耗层设置在光纤内，并且衰减低通过光纤传播的低阶模，同时不衰减高于低阶模的高阶模。 用于高阶光纤的色散补偿光纤模式转换器包括单模光纤; 高阶模色散补偿光纤; 以及通过熔融和延伸单模光纤和高阶模光纤而形成的熔接和延伸部分。 融合和扩展部分在单模光纤的LP 01模式和高阶模色散补偿光纤的LP <02> / O模式之间转换。

    HIGHER ORDER MODE DISPERSION COMPENSATING FIBER AND MODE CONVERTER FOR HIGHER ORDER FIBER
    2.
    发明申请
    HIGHER ORDER MODE DISPERSION COMPENSATING FIBER AND MODE CONVERTER FOR HIGHER ORDER FIBER 失效
    更高级的模式分散补偿光纤和模式转换器用于高阶光纤

    公开(公告)号：US20070201791A1

    公开(公告)日：2007-08-30

    申请号：US11739589

    申请日：2007-04-24

    申请人： Ning Guan ,  Kazuhiko Aikawa ,  Masashi Ikeda ,  Kuniharu Himeno ,  Koichi Harada

    发明人： Ning Guan ,  Kazuhiko Aikawa ,  Masashi Ikeda ,  Kuniharu Himeno ,  Koichi Harada

    IPC分类号： G02B6/26

    CPC分类号： G02B6/03644 ,  G02B6/02261 ,  G02B6/03627 ,  G02B6/14 ,  G02B6/268 ,  G02B6/2835

    摘要： A higher order mode dispersion compensating fiber includes an optical fiber and a first loss layer which is provided within the fiber and which attenuates a lower order mode propagating through the optical fiber while not attenuating a higher order mode which is higher than the lower order mode. A dispersion compensating fiber mode converter for a higher order fiber includes a single mode fiber; a higher order mode dispersion compensating fiber; and a fused and extended portion which has been formed by fusing and extending the single mode fiber and the higher order mode fiber. The fused and extended portion converts between the LP01 mode of the single mode fiber and the LP02 mode of the higher order mode dispersion compensating fiber.

    摘要翻译： 高阶模式色散补偿光纤包括光纤和第一损耗层，该第一损耗层设置在光纤内，并且衰减低通过光纤传播的低阶模，同时不衰减高于低阶模的高阶模。 用于高阶光纤的色散补偿光纤模式转换器包括单模光纤; 高阶模色散补偿光纤; 以及通过熔融和延伸单模光纤和高阶模光纤而形成的熔接和延伸部分。 融合和扩展部分在单模光纤的LP 01模式和高阶模色散补偿光纤的LP <02> / O模式之间转换。

    Dispersion compensating fiber module, and optical fiber transmission line
    3.
    发明授权
    Dispersion compensating fiber module, and optical fiber transmission line 失效
    色散补偿光纤模块和光纤传输线

    公开(公告)号：US07181115B2

    公开(公告)日：2007-02-20

    申请号：US11072533

    申请日：2005-03-07

    申请人： Kazuhiko Aikawa ,  Ryuji Suzuki ,  Kuniharu Himeno

    发明人： Kazuhiko Aikawa ,  Ryuji Suzuki ,  Kuniharu Himeno

    IPC分类号： G02B6/02 ,  G02B6/36

    CPC分类号： G02B6/29377 ,  G02B6/02233 ,  G02B6/02242 ,  G02B6/02261 ,  G02B6/02271 ,  G02B6/0228 ,  G02B6/0281 ,  G02B6/03666 ,  H04B10/2525

    摘要： A dispersion compensating fiber module which, when connected to an optical fiber which exhibits, at a wavelength of 1.55 μm, a chromatic dispersion of between +2 and +6 ps/nm/km, a dispersion slope of between +0.075 ps/nm2/km and +0.095 ps/nm2/pm, and a relative dispersion slope of between 0.016 nm−1 and 0.024 nm−1, performs compensation so that the residual dispersion of the connected optical fiber is reduced, the dispersion compensating fiber module includes a dispersion compensating fiber and at least one optical fiber fused to the dispersion compensating fiber, in which the dispersion compensating fiber module exhibits at a wavelength of 1.55 μm, a relative dispersion slope of between 0.016 nm−1 and 0.026 nm−1; and in a wavelength range between 1.525 μm and 1.565 μm, a maximum residual dispersion difference, when converted per km of the transmission optical fiber, of less than or equal to 0.4 ps/nm/km.

    摘要翻译： 一种色散补偿光纤模块，当与在1.55μm波长下表现出+2和+6ps / nm / km之间的色散的光纤连接时，色散斜率在+ 0.075ps / nm < SUP> 2 / km和+0.095ps / nm 2 / pm，以及0.016nm -1至0.024nm之间的相对色散斜率， -1执行补偿，使得连接的光纤的残余色散减小，色散补偿光纤模块包括色散补偿光纤和融合到色散补偿光纤的至少一个光纤，其中色散补偿 光纤模块呈现波长为1.55μm，相对色散斜率为0.016nm -1至0.026nm -1; 并且在1.525μm和1.565μm之间的波长范围内，当传输光纤每km转换时，最大残余色散差小于或等于0.4ps / nm / km。

    Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler
    6.
    发明授权
    Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler 失效
    极化波保持光纤，其制造方法，其连接方法，光放大器，激光振荡器和偏振波保持光纤耦合器

    公开(公告)号：US5689578A

    公开(公告)日：1997-11-18

    申请号：US318848

    申请日：1994-10-25

    申请人： Ryozo Yamauchi ,  Kuniharu Himeno ,  Minoru Sawada ,  Fumio Suzuki ,  Kazuhiko Aikawa ,  Tetsuo Nozawa ,  Shigefumi Yamasaki

    发明人： Ryozo Yamauchi ,  Kuniharu Himeno ,  Minoru Sawada ,  Fumio Suzuki ,  Kazuhiko Aikawa ,  Tetsuo Nozawa ,  Shigefumi Yamasaki

    IPC分类号： C03B37/012 ,  G02B6/10 ,  G02B6/255 ,  G02B6/28 ,  G02B6/34 ,  H01S3/067

    CPC分类号： G02B6/024 ,  C03B37/01217 ,  C03B37/01222 ,  G02B6/02042 ,  G02B6/2843 ,  H01S3/06708 ,  C03B2201/31 ,  C03B2201/36 ,  C03B2203/02 ,  C03B2203/12 ,  C03B2203/22 ,  C03B2203/30 ,  C03B2203/31 ,  C03B2203/34 ,  G02B6/2551 ,  G02B6/2552

    摘要： The polarization-maintaining optical fiber 10 of the present invention is designed so that a plurality of core portions 12a,12b which have a high refractive index is provided in parallel along a single diameter direction in the cross section of the optical fiber, these core portions 12a,12b cooperating to propagate a single fundamental mode. In the production method for the polarization-maintaining optical fiber of the present invention, a plurality of holes 22 are formed longitudinally in parallel along a single diameter direction of a glass rod 21 having a low refractive index which forms the cladding, glass rods 23 for core use having a high refractive index which form the core portions are inserted into these holes 22, heating to form a unitary body is carried out, creating a preform which is then drawn. Further, the rare-earth-doped polarization-maintaining optical fiber of the present invention uses a rare earth element to dope the optical waveguide portion of the polarization-maintaining optical fiber, and can be employed in a light amplifier or laser oscillator. Moreover, the polarization-maintaining optical fiber coupler of the present invention is formed by bringing two or more polarization maintaining optical fibers into contact, heating, fusing and elongating them, and heating the vicinity of the connection point before and after connection.

    摘要翻译： PCT No.PCT / JP94 / 00300 Sec。 371日期：1994年10月25日 102（e）日期1994年10月25日PCT 1994年2月24日PCT PCT。 第WO94 / 17714号公报 日期1994年9月1日本发明的偏振波保持光纤10被设计成使得在光学部件的横截面中沿着单一直径方向平行设置多个具有高折射率的芯部12a，12b 光纤，这些芯部分12a，12b协作传播单个基本模式。 在本发明的偏振波保持光纤的制造方法中，多个孔22沿着形成包层的折射率低的玻璃棒21的单一直径方向纵向平行地形成，玻璃棒23用于 形成芯部的具有高折射率的芯用途被插入到这些孔22中，进行加热以形成整体，形成预先形成的预成型体。 此外，本发明的稀土掺杂偏振保持光纤使用稀土元素来掺杂保偏光纤的光波导部分，并且可以用在光放大器或激光振荡器中。 此外，本发明的偏振保持光纤耦合器是通过使两个或更多个保偏光纤接触，加热，熔化和拉伸，以及在连接之前和之后加热连接点附近而形成的。

    Polarization-maintaining optical fiber and optical fiber gyro
    8.
    发明授权
    Polarization-maintaining optical fiber and optical fiber gyro 有权
    极化维护光纤和光纤陀螺

    公开(公告)号：US07430353B2

    公开(公告)日：2008-09-30

    申请号：US11474416

    申请日：2006-06-26

    申请人： Kazuhiko Aikawa ,  Katsuaki Izoe ,  Kazuyuki Hayashi ,  Manabu Kudoh

    发明人： Kazuhiko Aikawa ,  Katsuaki Izoe ,  Kazuyuki Hayashi ,  Manabu Kudoh

    IPC分类号： G02B6/02

    CPC分类号： G01C19/722 ,  G02B6/24

    摘要： A polarization-maintaining optical fiber comprises: a core; a pair of stress-applying parts disposed one at each side of the core; and a cladding which surrounds the core and the stress-applying parts; wherein when the polarization-maintaining optical fiber is used at a wavelength of 0.81 μm to 0.87 μm, a cut-off wavelength measured with a fiber length of 2 m is longer than the wavelength used and polarization crosstalk when a fiber having a length of 1,000 m is wound on a reel having a diameter of 40 mm is equal to or less than −35 dB/100 m.

    摘要翻译： 偏振保持光纤包括：芯; 一对在所述芯的每一侧设置的应力施加部; 以及包围芯和应力部分的包层; 其中，当波长为0.81μm至0.87μm的偏振波保持光纤使用时，光纤长度为2μm的截止波长比所使用的波长长和长度为1000的光纤时的极化串扰 m卷绕在直径为40mm的卷轴上等于或小于-35dB /100μm。

    Multi-core fiber
    9.
    发明授权
    Multi-core fiber 有权
    多芯光纤

    公开(公告)号：US07418178B2

    公开(公告)日：2008-08-26

    申请号：US11935113

    申请日：2007-11-05

    申请人： Manabu Kudou ,  Kazuhiko Aikawa ,  Takashi Tsumanuma

    发明人： Manabu Kudou ,  Kazuhiko Aikawa ,  Takashi Tsumanuma

    IPC分类号： G02B6/02

    CPC分类号： G02B6/02042

    摘要： A multi-core optical fiber apparatus is disclosed. The multi-core optical fiber apparatus includes a cladding comprising quartz and a plurality of cores embedded in the cladding. Each of the cores has a diameter (D) ranging from 1.3 μm to 2.0 μm, a numerical aperture (NA) from 0.35 to 0.45 and a refractive index profile factor (α) from 2.0 to 4.0. A center of each of the cores has a germanium content of 20 wt % to 30 wt %. An interval between adjacent cores is 3.0 μm or more.

    摘要翻译： 公开了一种多芯光纤装置。 多芯光纤设备包括包含石英和包埋在包层中的多个芯的包层。 每个芯具有1.3μm至2.0μm的直径（D），0.35至0.45的数值孔径（NA）和2.0至4.0的折射率分布因子（α）。 每个芯的中心的锗含量为20重量％至30重量％。 相邻芯之间的间隔为3.0μm以上。