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    Large effective area fiber
    21.
    发明申请
    Large effective area fiber 有权
    大面积纤维有效面积

    公开(公告)号：US20080279517A1

    公开(公告)日：2008-11-13

    申请号：US12151171

    申请日：2008-05-05

    Applicant: Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Xin Chen ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Daniel Aloysius Nolan

    Inventor： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Xin Chen ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Daniel Aloysius Nolan

    IPC: G02B6/028

    CPC classification number: G02B6/0365 ,  G02B6/02019

    Abstract: An optical fiber according to an embodiment of the present invention comprises: a glass core extending from a centerline to a radius R1 wherein R1 is greater than about 5 μm; a glass cladding surrounding and in contact with the core, the cladding comprising: (i) a first annular region extending from the radius R1 to a radius R2, the first annular region comprising a radial width, W2=R2−R1, (ii) a second annular region extending from the radius R2 to a radius R3, and comprising a radial width, W3=R3−R2, and (iii) a third annular region surrounding the second annular region and extending from the radius R3 to an outermost glass radius R4; wherein the core comprises a maximum relative refractive index, Δ1MAX, relative to the third annular region, and wherein Δ1MAX is greater than about 0.1% and less than about 0.3%; the first annular region has a refractive index delta Δ2(r) is less than about 0.025%; wherein the second annular region comprises a minimum relative refractive index, Δ3MIN, relative to the third annular region;wherein Δ1MAX>Δ2MAX>Δ3MIN, and Δ2MIN>Δ3MIN

    Abstract translation: 根据本发明实施例的光纤包括：从中心线延伸到半径R 1的玻璃芯，其中R 1>大于5μm; 围绕并与芯接触的玻璃包层，所述包层包括：（i）从半径R 1> 1半径R 2> 2延伸的第一环形区域，第一 包括径向宽度的第二环形区域，（ii）从半径R < SUB> 2 到半径R 3 3，并且包括径向宽度，W 3 3 = R 3→N < 2，和（iii）围绕第二环形区域并从半径R 3 3延伸到最外侧玻璃半径R 4的第三环形区域; 其中所述芯包括相对于所述第三环形区域的最大相对折射率，Δ1MAX1，并且其中Δ1MAX1大于约0.1％且小于约0.3％ ; 第一环形区域具有小于约0.025％的折射率差ΔΔ2（r）; 其中所述第二环形区域包括相对于所述第三环形区域的最小相对折射率，Δ3 NIN; 其中Delta 1MAX 增量2MAX 三角洲3MIN和三角洲2MIN 三角洲3IN > <0; 并且其中所述芯和所述包层提供具有小于1500nm的电缆截止的光纤，并且在1550nm处的有效面积大于95μm2，并且在20℃下的弯曲损耗为<= 0.5dB / mm直径心轴。

    Optical fiber light source based on third-harmonic generation
    24.
    发明授权
    Optical fiber light source based on third-harmonic generation 有权
    基于三次谐波发生的光纤光源

    公开(公告)号：US07339721B1

    公开(公告)日：2008-03-04

    申请号：US11712159

    申请日：2007-02-28

    Applicant: George Edward Berkey ,  Ming-Jun Li ,  Shenping Li ,  Daniel Aloysius Nolan

    Inventor： George Edward Berkey ,  Ming-Jun Li ,  Shenping Li ,  Daniel Aloysius Nolan

    IPC: G02F2/02 ,  G02B6/036

    CPC classification number: G02F1/3536 ,  G02B6/03605 ,  G02B6/03644 ,  G02F1/365 ,  G02F2001/354

    Abstract: An optical-fiber-based light source that generates light via third-harmonic (TH) generation is disclosed. The light source includes a pump light source that provides pump light having a fundamental mode of wavelength λP. The light source also includes an optical fiber optically coupled to the pump light source. The optical fiber's core refractive index profile has (i) a central region with a refractive index value Δ1, (ii) a first annular region immediately surrounding the central region and having a refractive index value Δ2, and (iii) a second annular region immediately surrounding the first annular region and having a refractive index value Δ3. The optical fiber satisfies the conditions Δ2 1.2%. The pump light produces TH-generated light having a higher-order mode of wavelength λTH=(1/3)λP and that is outputted at the optical fiber output end. The pump light fundamental mode overlaps the TH-generated-light higher order mode over the length of the optical fiber to provide a conversion efficiency of 1% or greater.

    Abstract translation: 公开了一种通过三次谐波（TH）产生光产生光的基于光纤的光源。 光源包括提供具有波长λ基波模式的泵浦光的泵浦光源。 光源还包括光学耦合到泵浦光源的光纤。 光纤的芯折射率分布具有（i）折射率值为Δ1的中心区域，（ii）直接围绕中心区域并具有折射率值Delta 2 ，和（iii）紧邻环绕第一环形区域并具有折射率值Δ3的第二环形区域。 光纤满足条件ΔΔ2<1>和Δ2<3> 3> 3，并且max {Delta 1/2> 3＆lt; 3＆gt;＆Delta;＆Delta; 2＆CenterDot;＆CenterDot;＆CenterDot;＆CenterDot;＆CenterDot; 泵浦光产生TH产生的光，其具有高阶模式的波长λ=（1/3）λP＆lt; P＆gt;，并且在光纤输出端输出 。 泵浦光基本模式在光纤长度上与TH生成光高阶模式重叠，以提供1％或更大的转换效率。

    Dispersion correction fiber, transmission system and method of operating same
    29.
    发明申请
    Dispersion correction fiber, transmission system and method of operating same 审中-公开
    色散校正光纤，传输系统及其操作方法

    公开(公告)号：US20050185905A1

    公开(公告)日：2005-08-25

    申请号：US11057313

    申请日：2005-02-11

    Applicant: James Burke ,  George Berkey ,  Dmitri Kuksenkov ,  Ming-Jun Li ,  Daniel Nolan ,  William Wood

    Inventor： James Burke ,  George Berkey ,  Dmitri Kuksenkov ,  Ming-Jun Li ,  Daniel Nolan ,  William Wood

    IPC: G02B6/02 ,  G02B6/036 ,  H04B10/18 ,  G02B6/16

    CPC classification number: G02B6/03677 ,  G02B6/02009 ,  G02B6/02261 ,  G02B6/03644 ,  G02B6/03672 ,  H04B10/2525

    Abstract: A dispersion correction optical fiber includes a segmented core having a central core segment, a moat segment and, preferably, a ring segment. The refractive index profile is selected to provide a total dispersion minimum which is located within an operating wavelength band of the fiber. Most preferably, the dispersion value at the minimum is more negative than −400 ps/nm/km and greater than −1200 ps/nm/km at 1550 nm. Optical transmission systems including the present invention dispersion correction optical fiber optically coupled to various transmission fibers and dispersion compensating fibers are also disclosed, as is a method of operating the dispersion correction fiber wherein the minimum is located within the desired operating wavelength band.

    Abstract translation: 色散校正光纤包括具有中心核心段，护环段和优选环形段的分段核心。 选择折射率分布以提供位于光纤的工作波长带内的总色散最小值。 最优选地，在1550nm处，最小的色散值比-400ps / nm / km更大，大于-1200ps / nm / km。 还公开了包括光学耦合到各种传输光纤和色散补偿光纤的本发明的色散校正光纤的光传输系统，以及操作色散校正光纤的方法，其中最小值位于期望的工作波长带内。

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