中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

331 records (took 0.027 seconds)

    Optical fiber
    82.
    发明授权
    Optical fiber 失效
    光纤

    公开(公告)号：US07386210B2

    公开(公告)日：2008-06-10

    申请号：US11538334

    申请日：2006-10-03

    Applicant: Julia A. Farroni ,  Adrian Carter ,  Kanishka Tankala

    Inventor： Julia A. Farroni ,  Adrian Carter ,  Kanishka Tankala

    IPC: G02B6/00

    CPC classification number: G02B6/02114 ,  C03B37/01217 ,  C03B37/01231 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/42 ,  C03B2203/23 ,  C03B2203/31 ,  G02B6/024

    Abstract: An optical fiber comprises a photosensitive core that includes a concentration of a first material that increases the refractive index of the core and a concentration of a second material that is other than boron and that reduces the refractive index of the core. A cladding is disposed about the core for tending to confine light to the core. The fiber also includes at least one longitudinally extending region having a thermal coefficient of expansion that is different from the thermal coefficient of expansion of the cladding. In another embodiment, the core includes a concentration of germanium and a concentration of boron. Also disclosed is a polarization-maintaining double-clad (PM DC) fiber comprising one or both of at least one circular axially extending stress inducing region(s) and an inner cladding comprising a circular outer perimeter. Fibers according to the invention can include a rare earth dopant for emitting light of a selected wavelength responsive to being pumped by pump light of a pump wavelength that is different than the selected wavelength.

    Abstract translation: 光纤包括感光芯，其包括提高芯的折射率的第一材料的浓度和不同于硼的第二材料的浓度，并降低芯的折射率。 围绕芯部布置包层以倾向于将光限制在芯部上。 纤维还包括具有不同于包层的热膨胀系数的热膨胀系数的至少一个纵向延伸区域。 在另一个实施方案中，芯包括锗的浓度和硼的浓度。 还公开了一种包括至少一个圆形轴向延伸的应力诱导区域和包含圆形外周边的内包层中的一个或两个的偏振保持双包层（PMDC）光纤。 根据本发明的纤维可以包括用于发射选定波长的光的稀土掺杂剂，其响应于通过不同于所选波长的泵浦波长的泵浦光泵浦。

    OPTICAL FIBER, MANUFACTURING METHOD OF THE SAME, AND OPTICAL AMPLIFIER
    84.
    发明申请
    OPTICAL FIBER, MANUFACTURING METHOD OF THE SAME, AND OPTICAL AMPLIFIER 有权
    光纤，其制造方法和光放大器

    公开(公告)号：US20080013904A1

    公开(公告)日：2008-01-17

    申请号：US11847663

    申请日：2007-08-30

    Applicant: Masato Nishihara ,  Etsuko Hayashi ,  Shinya Inagaki

    Inventor： Masato Nishihara ,  Etsuko Hayashi ,  Shinya Inagaki

    IPC: G02B6/02

    CPC classification number: H01S3/06708 ,  C03B37/01248 ,  C03B37/01433 ,  C03B37/01838 ,  C03B2201/34 ,  C03B2203/29 ,  G02B6/03633 ,  H01S3/06729 ,  H01S3/094003

    Abstract: An optical fiber includes: a first core portion doped with rare earth ions; a second core portion having a lower refractive index than that of the first core portion, provided along an outer circumference of the first core portion, and doped with the rare earth ions; and a clad portion having a lower refractive index than that of the second core portion and provided along an outer circumference of the second core portion, and is configured such that a concentration of the rare earth ions added to the second core portion is higher than that to the first core portion. With this configuration, it is possible to suppress an amount of FWM crosstalk in an optical amplification by decreasing the length of a fiber while alleviating efficiency deterioration due to concentration quenching.

    Abstract translation: 光纤包括：掺杂有稀土离子的第一芯部分; 具有比所述第一芯部的折射率低的第二芯部，沿着所述第一芯部的外周设置并掺杂有所述稀土离子; 以及包层部，其具有比所述第二芯部的折射率低的折射率，并且沿着所述第二芯部的外周设置，并且被配置为使得添加到所述第二芯部的所述稀土离子的浓度高于 到第一核心部分。 通过这种结构，可以通过减少纤维的长度同时减轻由于浓度骤冷引起的效率劣化来抑制光放大中的FWM串扰的量。

    Multimode polarization maintaining double clad fiber
    87.
    发明授权
    Multimode polarization maintaining double clad fiber 有权
    多模极化保持双包层光纤

    公开(公告)号：US07110647B2

    公开(公告)日：2006-09-19

    申请号：US10910924

    申请日：2004-08-03

    Applicant: Julia A. Farroni ,  Upendra H. Manyam ,  Kanishka Tankala

    Inventor： Julia A. Farroni ,  Upendra H. Manyam ,  Kanishka Tankala

    IPC: G02B6/024

    CPC classification number: C03B37/01217 ,  C03B2201/34 ,  C03B2203/23 ,  C03B2203/302 ,  C03B2203/31 ,  G02B6/024 ,  G02B6/03622 ,  G02B6/03694 ,  Y02P40/57

    Abstract: A polarization maintaining optical fiber has a core extending along a longitudinal axis, where the core includes a rare earth and a first index of refraction. A cladding is disposed about the core and has a first thermal coefficient of expansion (TCE) and a second index of refraction that is less than the first index of refraction. The fiber can include a pair of longitudinally extending members, and each of the members can have a TCE that is different than the first TCE of the cladding. The pair can be spaced apart by a distance di. A second cladding can be disposed about the first cladding, and the second cladding can have a third index of refraction that is less than the second index of refraction. The fiber can have a fundamental mode having a mode field diameter (MFD). The core can be a multimode core having a diameter dc that is greater than or equal to 15 microns, the numerical aperture of the core relative to the first cladding can be less than or equal to 0.12, the ratio di/MFD can be greater than 3, and the fiber can provide a beat length of less than 3 mm, where the beat length is measured at a wavelength of 633 nm.

    Abstract translation: 偏振保持光纤具有沿纵轴延伸的芯，其中芯包括稀土和第一折射率。 包层设置在芯周围，并且具有小于第一折射率的第一热膨胀系数（TCE）和第二折射率。 纤维可以包括一对纵向延伸的构件，并且每个构件可以具有与包层的第一TCE不同的TCE。 该对可以间隔一段距离d i。 可以围绕第一包层设置第二包层，并且第二包层可以具有小于第二折射率的第三折射率。 光纤可以具有模场直径（MFD）的基模。 芯可以是直径大于或等于15微米的多模芯，芯相对于第一包层的数值孔径可以小于或等于0.12， 比率d可以大于3，并且纤维可以提供小于3mm的拍子长度，其中在633nm的波长处测量拍子长度。

    Hybrid manufacturing process for optical fibers
    88.
    发明授权
    Hybrid manufacturing process for optical fibers 失效

    公开(公告)号：US07003984B2

    公开(公告)日：2006-02-28

    申请号：US10135226

    申请日：2002-04-30

    Applicant: Abdelouahed Soufiane

    Inventor： Abdelouahed Soufiane

    IPC: C03B37/018

    CPC classification number: C03B37/01807 ,  C03B37/01815 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2207/34 ,  Y10S65/09

    Abstract: A hybrid method of and apparatus for producing a structure capable of being drawn into an optical fiber. The method includes the steps of conducting vapor-phase reactants into an interior region of a glass tube, conducting aerosol form reactants into the interior of the glass tube. The tube is exposed to a heat, thereby causing a reaction among the vapor-phase and aerosol reactants. The reaction yields a product, in a solid form, within the tube. The apparatus includes a reaction tube, a vapor-phase reactant conduit, an aerosol-form conduit, and a heat source. The vapor-phase and aerosol-form reactant conduits facilitate introduction of vapor-phase and aerosol-form reactants into the reaction tube. The aerosol-form reactants are introduced proximate to a reaction zone created by the heat source. The aerosol-form reactants conduit and heat source travel the axial length of the reaction tube.

Patent Agency Ranking