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    Testing optical fiber splices
    31.
    发明授权
    Testing optical fiber splices 有权
    测试光纤接头

    公开(公告)号：US06513994B1

    公开(公告)日：2003-02-04

    申请号：US09561035

    申请日：2000-04-28

    Applicant: David John DiGiovanni ,  John Edwin Graebner ,  Sun-Young John Kwak

    Inventor： David John DiGiovanni ,  John Edwin Graebner ,  Sun-Young John Kwak

    IPC: G02B6255

    CPC classification number: G01N21/896 ,  G01N2021/9511 ,  G02B6/255

    Abstract: The specification describes a technique for evaluating optical fiber splices. The essence of the technique involves detecting thermal power emanating from the fiber splice as the result of absorption of the light carried by the fiber. The technique is particularly suited for cladding pumped lasers wherein the splicing operation may introduce excessive absorption of pump laser radiation and excessive heating at the splice locale.

    Abstract translation: 本说明书描述了一种用于评估光纤接头的技术。 该技术的本质涉及检测由光纤携带的光吸收的结果，从光纤接头发出的热功率。 该技术特别适用于包层泵浦激光器，其中拼接操作可能引起泵浦激光辐射的过度吸收以及在接合状态下的过度加热。

    Optical waveguide lasers and amplifiers with pump power monitors
    32.
    发明授权
    Optical waveguide lasers and amplifiers with pump power monitors 有权
    具有泵功率监视器的光波导激光器和放大器

    公开(公告)号：US06389186B1

    公开(公告)日：2002-05-14

    申请号：US09303383

    申请日：1999-04-30

    Applicant: David John DiGiovanni ,  Jane Deborah LeGrange

    Inventor： David John DiGiovanni ,  Jane Deborah LeGrange

    IPC: G02B600

    CPC classification number: H01S3/0014 ,  H01S3/094003

    Abstract: In accordance with the invention, a pumped waveguide device comprising a pump waveguide and an active waveguide is provided with a pump power monitor by disposing between the pump source and the active waveguide, an indicator waveguide having a core doped with a material sensitive to the pump light. For example the material can fluoresce in response to pump light or absorb pump light and generate heat. Pump power is then accurately measured by the fluorescence or heat from the indicator waveguide. Since the fluorescence or heat is generated in the doped core, the measurement is sensitive to the pump power that will enter the active waveguide and is relatively insensitive to changes in mode distribution. Exemplary embodiments include monitored cladding pumped fiber lasers, amplifiers and light sources.

    Abstract translation: 根据本发明，包括泵浦波导和有源波导的泵浦波导装置通过设置在泵浦源和有源波导之间而设置有泵浦功率监视器，指示器波导具有掺杂有对泵敏感的材料的芯 光。 例如，材料可以响应于泵浦光而发出荧光，或吸收泵浦光并产生热量。 然后通过来自指示器波导的荧光或热量精确地测量泵功率。 由于在掺杂芯中产生荧光或热，所以测量对于将进入有源波导的泵浦功率敏感，并且对模式分布的变化相对不敏感。 示例性实施例包括被监测的包层泵浦光纤激光器，放大器和光源。

    Tapered fiber bundles for coupling light into and out of cladding-pumped fiber devices
    35.
    发明授权
    Tapered fiber bundles for coupling light into and out of cladding-pumped fiber devices 失效
    锥形光纤束，用于将光耦合到包层泵浦光纤装置中和外

    公开(公告)号：US5864644A

    公开(公告)日：1999-01-26

    申请号：US897195

    申请日：1997-07-21

    Applicant: David John DiGiovanni ,  Andrew John Stentz

    Inventor： David John DiGiovanni ,  Andrew John Stentz

    IPC: G02B6/04 ,  G02B6/28 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  G02B6/26

    CPC classification number: G02B6/2856 ,  H01S3/094003 ,  H01S3/06708

    Abstract: In accordance with the invention, light is coupled from a plurality of semiconductor emitters to a cladding-pumped fiber via tapered fiber bundles fusion spliced to the cladding-pumped fiber. Individual semiconductor broad stripe emitters can be coupled to individual multimode fibers. The individual fibers can be bundled together in a close-packed formation, heated to melting temperature, drawn into a taper and then fusion spliced to the cladding-pumped fiber. Advantageously, the taper is then overcoated with cladding material such as low index polymer. In addition, a fiber containing a single-mode core can be included in the fiber bundle. This single-mode core can be used to couple light into or out of the single-mode core of the cladding-pumped fiber.

    Abstract translation: 根据本发明，光从多个半导体发射器耦合到包层泵浦光纤，通过熔接到包层泵浦光纤的锥形光纤束。 单独的半导体宽带发射器可以耦合到单独的多模光纤。 单个纤维可以以紧密堆积的形式捆扎在一起，加热到熔融温度，拉成锥形，然后熔融接合到包层泵送的纤维。 有利地，锥形然后用包覆材料例如低折射率聚合物覆盖。 此外，包含单模芯的纤维可以包括在纤维束中。 这种单模芯可用于将光耦合到包层泵浦光纤的单模芯中或从外部耦合光纤。

    Optical fiber configuration for dissipating stray light
    38.
    发明申请
    Optical fiber configuration for dissipating stray light 有权
    用于消散杂散光的光纤配置

    公开(公告)号：US20080193093A1

    公开(公告)日：2008-08-14

    申请号：US11705229

    申请日：2007-02-12

    Applicant: David John DiGiovanni ,  Yoshihiro Emori ,  Michael Fishteyn ,  Clifford Headley

    Inventor： David John DiGiovanni ,  Yoshihiro Emori ,  Michael Fishteyn ,  Clifford Headley

    IPC: G02B6/02 ,  G02B6/04

    CPC classification number: G02B6/2804 ,  G02B6/02395 ,  G02B6/0365

    Abstract: An optical transmission fiber is formed to include a relatively low-index, relatively thin outer cladding layer disposed underneath the protective polymer outer coating. Stray light propagating along an inner cladding layer(s) within the fiber will be refracted into the thin outer cladding (by proper selection of refractive index values). The thin dimension of the outer cladding layer allows for the stray light to “leak” into the outer coating in a controlled, gradual manner so as to minimize heating of the coating associated with the presence of stray light. The inventive fiber may also be bent to assist in the movement of stray light into the coating.

    Abstract translation: 光传输光纤被形成为包括设置在保护性聚合物外涂层下方的相对较低折射率的较薄的外包层。 沿着纤维内的内包层传播的杂散光将被折射入薄的外包层（通过适当地选择折射率值）。 外包层的薄的尺寸允许杂散光以受控的逐渐的方式“泄漏”到外涂层中，以便最小化与杂散光的存在相关联的涂层的加热。 本发明的纤维也可以被弯曲以帮助杂散光移动到涂层中。

    High-temperature sintering of soot bodies doped using molecular stuffing
    39.
    发明授权
    High-temperature sintering of soot bodies doped using molecular stuffing 失效
    使用分子填料掺杂烟灰体的高温烧结

    公开(公告)号：US06966201B2

    公开(公告)日：2005-11-22

    申请号：US10222247

    申请日：2002-08-16

    Applicant: David John DiGiovanni ,  Kyunghwan Oh

    Inventor： David John DiGiovanni ,  Kyunghwan Oh

    IPC: C03B37/012 ,  C03C21/00 ,  C03B37/016

    CPC classification number: C03B37/01248 ,  C03B37/01211 ,  C03B37/0126 ,  C03B37/01433 ,  C03B37/016 ,  C03B2201/30 ,  C03C21/001

    Abstract: Techniques are described for fabricating a preform from a soot body. In one described technique, a soot body is loaded into a substrate tube, and the position of the soot body is stabilized within the tube. The tube is then rotated around its longitudinal axis. Heat is applied from a heat source to the substrate tube at a first end of the soot body to cause the first end of the soot body to begin to sinter and to cause the substrate tube to begin to at least partially collapse around the sintered portion of the soot body. The heat source is then advanced along the substrate tube and the soot body to cause a progressive sintering of the soot body, and to cause a progressive, at least partial, collapse of the substrate tube around the sintered portion of the soot body.

    Abstract translation: 描述了从烟灰体制造预制件的技术。 在一种所述的技术中，将烟灰体装载到衬底管中，并且烟灰体的位置在管内稳定。 然后将管围绕其纵向轴线旋转。 在烟灰体的第一端处从热源向基材管施加热量，以使烟灰体的第一端开始烧结，并使基材管开始至少部分地在烧结部分 烟灰体。 然后，热源沿着衬底管和烟灰体前进，以引起烟灰体的逐渐烧结，并引起衬底管在烟灰体的烧结部分周围的渐进的，至少部分的塌陷。

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