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223 条记录 (耗时 0.037 秒)

    Method of making spun optical fiber with low PMD
    71.
    发明授权
    Method of making spun optical fiber with low PMD 失效
    低PMD纺丝光纤的制备方法

    公开(公告)号：US06993229B2

    公开(公告)日：2006-01-31

    申请号：US10676290

    申请日：2003-09-30

    申请人： Xin Chen ,  Ming-Jun Li ,  Jesse C. Meyer ,  Oscar Palmer

    发明人： Xin Chen ,  Ming-Jun Li ,  Jesse C. Meyer ,  Oscar Palmer

    IPC分类号： G02B6/02 ,  G02B6/16

    CPC分类号： G02B6/02285 ,  C03B37/02745 ,  C03B2203/19 ,  C03B2203/20 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/03677

    摘要： An optical fiber, and a method of making such optical fiber, wherein the optical fiber exhibits a beatlength greater than about 0.5 meters, and the fiber is spun to provide a polarization mode dispersion in the spun state of said fiber which is less than 0.05 ps/km1/2. The fiber is spun by employing a spin having a spin repeat distance of at least 1 meter and a plurality of varying spin reversal distances occurring within the spin repeat distance. The spin preferably alternates between clockwise and counterclockwise directions.

    摘要翻译： 一种光纤和制造这种光纤的方法，其中光纤表现出大于约0.5米的拍径，并且将光纤旋转以在所述光纤的纺丝状态下提供小于0.05ps的偏振模色散 / km <1/2>。 通过采用自旋重复距离至少为1米的旋转和在自旋重复距离内出现的多个变化的自旋反转距离来旋转纤维。 旋转优选地在顺时针和逆时针方向之间交替。

    Reduced polarization mode dispersion fiber
    72.
    发明授权
    Reduced polarization mode dispersion fiber 失效
    减少偏振模色散光纤

    公开(公告)号：US06920271B2

    公开(公告)日：2005-07-19

    申请号：US10358768

    申请日：2003-02-05

    申请人： Xin Chen ,  Ming-Jun Li

    发明人： Xin Chen ,  Ming-Jun Li

    IPC分类号： G02B6/10 ,  G02B6/02

    CPC分类号： G02B6/02285 ,  G02B6/105

    摘要： Disclosed is an optical waveguide fiber having a reduced PMD and a method of making the optical waveguide fiber. The optical waveguide fiber in accord with the invention has a particular spin pattern impressed upon the optical waveguide fiber during the drawing step. The spin pattern causes the fast axis of birefringence to rotate along the long axis of the optical waveguide fiber. The spin functions in accord with the invention provide for reduced PMD even in cases in which draw speed, spin magnitude, or modulation parameter vary while the spin pattern is being impressed upon the optical waveguide fiber.

    摘要翻译： 公开了具有降低的PMD的光波导纤维和制造光波导纤维的方法。 根据本发明的光波导纤维在拉伸步骤中具有在光波导纤维上施加的特定的旋转图案。 旋转图案使得双折射的快轴沿着光波导纤维的长轴旋转。 根据本发明的自旋功能即使在自旋图案被施加在光波导纤维上时，牵引速度，自旋幅度或调制参数变化的情况也提供降低的PMD。

    Few mode optical fibers for mode division multiplexing
    76.
    发明授权
    Few mode optical fibers for mode division multiplexing 有权
    用于模式分割复用的少量模式光纤

    公开(公告)号：US08693834B2

    公开(公告)日：2014-04-08

    申请号：US13420037

    申请日：2012-03-14

    申请人： Scott Robertson Bickham ,  Ming-Jun Li ,  Daniel Aloysius Nolan ,  Ji Wang

    发明人： Scott Robertson Bickham ,  Ming-Jun Li ,  Daniel Aloysius Nolan ,  Ji Wang

    IPC分类号： H04B10/00

    CPC分类号： G02B6/0288 ,  G02B6/02019 ,  G02B6/02023 ,  G02B6/03627 ,  G02B6/0365 ,  H04J14/04

    摘要： A few mode optical fiber suitable for use in a mode division multiplexing (MDM) optical transmission system is disclosed. The optical fiber has a graded-index core with a radius R1 in the range from 8 μm to 14 μm, an alpha value greater than or equal to about 2.3 and less than about 2.7 at a wavelength of 1550 nm, and a maximum relative refractive index Δ1MAX from about 0.3% to about 0.6% relative to the cladding. The optical fiber also has an effective area greater than about 90 μm2 and less than about 160 μm2. The core and cladding support only the LP01 and LP11 modes at wavelengths greater than 1500 nm. The cladding has a maximum relative refractive index Δ4MAX such that Δ1MAX>Δ4MAX, and the differential group delay between the LP01 and LP11 modes is less than about 0.5 ns/km at a wavelength of 1550 nm.

    摘要翻译： 公开了适用于模分多路复用（MDM）光传输系统的几种模式光纤。 光纤具有半径R1在8μm至14μm范围内的梯度折射率芯，在1550nm波长处大于或等于约2.3且小于约2.7的α值，以及最大相对折射率 指数＆Dgr; 1MAX，相对于包层为约0.3％至约0.6％。 该光纤还具有大于约90μm2且小于约160μm2的有效面积。 芯和包层只支持波长大于1500 nm的LP01和LP11模式。 包层具有最大相对折射率＆Dgr; 4MAX，使得＆Dgr; 1MAX>＆Dgr; 4MAX，并且LP01和LP11模式之间的差分群延迟在1550nm的波长处小于约0.5ns / km。

    Low bend loss optical fiber
    77.
    发明授权
    Low bend loss optical fiber 有权
    低弯曲损耗光纤

    公开(公告)号：US08666214B2

    公开(公告)日：2014-03-04

    申请号：US13680676

    申请日：2012-11-19

    申请人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

    发明人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

    IPC分类号： G02B6/02 ,  G02B6/028 ,  G02B6/032 ,  G02B6/10

    CPC分类号： G02B6/028 ,  G02B6/02266 ,  G02B6/0281 ,  G02B6/0283 ,  G02B6/0285 ,  G02B6/0286 ,  G02B6/03627 ,  G02B6/03638 ,  G02B6/0365

    摘要： One embodiment of a single mode optical fiber includes: a graded index central core region having outer radius r1 and relative refractive index Δ1; a cladding region comprising (i) a first inner cladding region having an outer radius r2 10 microns and comprising a minimum relative refractive index Δ3, wherein said second inner cladding region has at least one region with a relative refractive index delta that becomes more negative with increasing radius; and (iii) an outer cladding region surrounding the second inner cladding region and comprising relative refractive index Δ4, wherein Δ1>Δ2>Δ3, Δ3

    摘要翻译： 单模光纤的一个实施例包括：具有外半径r1和相对折射率Delta1的渐变折射率中心纤芯区域; 包层区域，包括（i）具有外半径r2 <10微米和相对折射率Delta2和0.65 @ r1 / r2 @ 1的第一内包层区域; （ii）和具有外径r3> 10微米并且包括最小相对折射率Delta3的第二内包层区域（即，沟槽），其中所述第二内包层区域具有至少一个具有相对折射率Δδ的区域， 半径越来越大; 和（iii）围绕第二内包层区域并包括相对折射率Delta4的外包层区域，其中Delta1> Delta2> Delta3，Delta3Δ4。

    Method of making multimode optical fibers
    78.
    发明授权
    Method of making multimode optical fibers 有权
    制造多模光纤的方法

    公开(公告)号：US08666213B2

    公开(公告)日：2014-03-04

    申请号：US13214554

    申请日：2011-08-22

    申请人： Ming-Jun Li

    发明人： Ming-Jun Li

    IPC分类号： G02B6/028

    CPC分类号： G02B6/0288

    摘要： A multimode optical fiber is drawn form an optical fiber preform, and during said drawing step, a series of perturbations are imparted to the fiber along the length of the optical fiber, said perturbations exhibiting a non-constant amplitude or repeat period.

    摘要翻译： 多模光纤被拉制成光纤预制棒，并且在所述拉伸步骤期间，沿着光纤的长度向纤维施加一系列扰动，所述扰动表现出非恒定振幅或重复周期。

    Bend loss resistant multi-mode fiber
    79.
    发明授权
    Bend loss resistant multi-mode fiber 有权
    弯曲损耗多模光纤

    公开(公告)号：US08588568B2

    公开(公告)日：2013-11-19

    申请号：US13289029

    申请日：2011-11-04

    申请人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

    发明人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

    IPC分类号： G02B6/02

    CPC分类号： G02B6/0288 ,  G02B6/0281 ,  G02B6/03627

    摘要： A graded index multimode optical fiber comprising: (a) a silica core doped with germania, and at least one co-dopant, comprising one of P2O5 or F or B2O3, the core extending to outermost core radius, r1 and having a dual alpha, α1; (b) a low index inner cladding surrounding the core and off-set from said core; (c) an outer cladding surrounding and in contact with the inner cladding, such that at least the region of the inner cladding off-set from said core has a lower refractive index than the outer cladding. The center germania concentration at the centerline, CGe1, is greater than or equal to 0, and an outermost germania concentration in the core CGe2, at r1 is greater than or equal to 0. The core has a center co-dopant concentration at the centerline, Cc-d1, greater than or equal to 0, and an outermost co-dopant concentration Cc-d2, at r1, wherein Cc-d2 is greater than or equal to 0.

    摘要翻译： 一种分级折射率多模光纤，包括：（a）掺杂有氧化锗的二氧化硅芯，以及包含P2O5或F或B2O3之一的至少一种共掺杂物，所述芯延伸到最外芯半径r1并具有双重α， alpha1; （b）围绕所述芯并偏离所述芯的低折射率内包层; （c）包围并与内包层接触的外包层，使得至少从所述芯偏离的内包层的区域具有比外包层更低的折射率。 中心线CGe1处的中心锗浓度大于或等于0，核心CGe2在r1处的最外面的锗浓度大于或等于0.核心在中心线处具有中心共掺杂剂浓度 ，Cc-d1，大于或等于0，最外侧辅助掺杂浓度Cc-d2在r1处，其中Cc-d2大于或等于0。

    SINGLE-MODE OPTICAL FIBERS FOR OPTICAL FIBER CONNECTORS
    80.
    发明申请
    SINGLE-MODE OPTICAL FIBERS FOR OPTICAL FIBER CONNECTORS 有权
    用于光纤连接器的单模光纤

    公开(公告)号：US20130259426A1

    公开(公告)日：2013-10-03

    申请号：US13436286

    申请日：2012-03-30

    申请人： Ming-Jun Li ,  Gaozhu Peng ,  Constantine Saravanos

    发明人： Ming-Jun Li ,  Gaozhu Peng ,  Constantine Saravanos

    IPC分类号： G02B6/38 ,  G02B6/028

    CPC分类号： G02B6/02019 ,  G02B6/02038 ,  G02B6/421

    摘要： A single-mode optical fiber for use as a stub fiber in an optical fiber connector is disclosed. The optical fiber is configured minimize the adverse effects of multipath interference (MPI) that can arise in a short, single-mode conventional stub fiber that has a large group index difference. The optical fiber is also configured to have a mode-field diameter that is substantially the same as that of single-mode optical fibers intended for use as field fiber in a mechanical splice connector, along with a cutoff wavelength λC≦1200 nm. An optical fiber connector that uses the optical fiber as a stub fiber is also disclosed.

    摘要翻译： 公开了用作光纤连接器中的短纤维的单模光纤。 配置光纤最小化在具有大的组折射率差异的短单模传统短纤维中可能出现的多径干扰（MPI）的不利影响。 光纤还被配置为具有与用于机械接头连接器中的场光纤的单模光纤的模场直径以及截止波长λC@ 1200nm基本相同的模场直径。 还公开了一种使用光纤作为短纤维的光纤连接器。