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    Rare earth doped optical fiber and method for manufacturing the same
    111.
    发明专利
    Rare earth doped optical fiber and method for manufacturing the same 审中-公开
    稀土接地光纤及其制造方法

    公开(公告)号：JP2014143287A

    公开(公告)日：2014-08-07

    申请号：JP2013010489

    申请日：2013-01-23

    Applicant: Mitsubishi Cable Ind Ltd ,  三菱電線工業株式会社

    Inventor： KIM SEONG-JIN

    IPC: H01S3/067 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04

    CPC classification number: C03C13/045 ,  C03C3/06 ,  C03C2201/12 ,  C03C2201/28 ,  C03C2201/31 ,  C03C2201/3476 ,  C03C2201/3488 ,  C03C2201/36

    Abstract: PROBLEM TO BE SOLVED: To provide a Yb-doped optical fiber having low transmission loss, high photo darkening resistance or low PD loss increase, and high conversion efficiency.SOLUTION: In a silica glass optical fiber including a core doped with a rare earth element and at least P and a cladding provided on an outer periphery of the core, the core NA is 0.05 or more and 0.25 or less, the concentration of the rare earth element doped in the core is 2 wt.% or more and 10 wt.% or less, the concentration of P doped in the core is 3 wt.% or more and 20 wt.% or less, and the minimum transmission loss of the core in a wavelength band from 1,000 nm to 1,700 nm is 3 dB/km or more and 100 dB/km or less.

    Abstract translation: 要解决的问题：提供一种具有低传输损耗，高光变暗电阻或低PD损耗增加以及高转换效率的Yb掺杂光纤。解决方案：在包括掺杂有稀土元素的芯的石英玻璃光纤中 并且至少设置在芯的外周上的P和包层，芯NA为0.05以上且0.25以下，掺杂在芯中的稀土元素的浓度为2重量％以上且10重量％以下。 在芯中掺杂的P的浓度为3重量％以上且20重量％以下，核心在1000nm〜1700nm的波长带中的最小传输损耗为3dB / km 以上且100dB / km以下。

    Optical fiber
    112.
    发明专利
    Optical fiber 有权
    光纤

    公开(公告)号：JP2014007255A

    公开(公告)日：2014-01-16

    申请号：JP2012141362

    申请日：2012-06-22

    Applicant: Mitsubishi Cable Ind Ltd ,  三菱電線工業株式会社

    Inventor： KIM SEONG-JIN

    IPC: H01S3/067 ,  C03C13/04

    CPC classification number: C03C13/045 ,  C03C3/06 ,  C03C4/12 ,  C03C2201/12 ,  C03C2201/28 ,  C03C2201/31 ,  C03C2201/3488 ,  C03C2201/36

    Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber having low transmission loss, high photo-darkening resistance or PD loss increase, and high nonlinearity resistance.SOLUTION: The optical fiber comprises a core having Yb, Al and F added thereto, and a clad provided on an outer periphery of the core. The density of Yb added to the core is 0.05-0.5 mol%. The density of Al is 0.3-2 mol%. The density of F is 0.1-1 mol%.

    Abstract translation: 要解决的问题：提供具有低传输损耗，高光变暗电阻或PD损耗增加以及高非线性电阻的光纤。解决方案：光纤包括添加有Yb，Al和F的芯和包层 设置在芯的外周。 加入核心的Yb的密度为0.05-0.5摩尔％。 Al的密度为0.3-2mol％。 F的密度为0.1-1摩尔％。

    Rare earth-added optical fiber and method for producing the same
    113.
    发明专利
    Rare earth-added optical fiber and method for producing the same 有权
    稀土添加光纤及其制造方法

    公开(公告)号：JP2012162433A

    公开(公告)日：2012-08-30

    申请号：JP2011025835

    申请日：2011-02-09

    Applicant: Mitsubishi Cable Ind Ltd ,  三菱電線工業株式会社

    Inventor： KIN SEICHIN

    IPC: C03B37/018 ,  C03C13/04 ,  G02B6/00 ,  H01S3/067

    CPC classification number: C03B37/01807 ,  C03B2201/31 ,  C03B2201/36 ,  C03B2203/22 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/31 ,  C03C2201/3488 ,  C03C2201/36

    Abstract: PROBLEM TO BE SOLVED: To provide a rare earth-added optical fiber of a low loss and a method for producing the optical fiber.SOLUTION: During a soot deposition process, the amount of GeClto be supplied is increased from the start of soot deposition while soot is deposited. As a result, the concentration of Ge dope is raised from the interface between a core and a clad toward the center of the core, becomes approximately constant from the raised position toward the center of the core, rises further from there toward the center of the core, and becomes maximum at the center of the core in a Ge doping profile. The optical fiber having the doping profile is produced.

    Abstract translation: 要解决的问题：提供一种低损耗的稀土添加光纤和一种光纤的制造方法。 解决方案：在烟灰沉积过程中，当烟灰沉积时，从炭烟沉积开始，提供的GeCl 4 的量增加。 结果，Ge掺杂物的浓度从芯和包层之间的界面朝向芯的中心升高，从升高位置朝向芯的中心大致恒定，从那里向着中心延伸 并且在Ge掺杂特性中在核心的中心处变得最大。 制造具有掺杂分布的光纤。 版权所有（C）2012，JPO＆INPIT

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