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223 条记录 (耗时 0.035 秒)

    High performance single mode waveguide
    1.
    发明授权
    High performance single mode waveguide 有权
    高性能单模波导

    公开(公告)号：US6031956A

    公开(公告)日：2000-02-29

    申请号：US173097

    申请日：1998-10-14

    申请人： Ming-Jun Li ,  Yanming Liu ,  Daiping Ma ,  David K. Smith

    发明人： Ming-Jun Li ,  Yanming Liu ,  Daiping Ma ,  David K. Smith

    IPC分类号： G02B6/02 ,  G02B6/036

    CPC分类号： G02B6/03644 ,  G02B6/02014 ,  G02B6/02271 ,  G02B6/0286 ,  G02B6/02228 ,  G02B6/03611

    摘要： Disclosed is a single mode optical waveguide fiber having a segmented core design. In particular, the core comprises three segments, each having characteristic dimensions and refractive index profile. By proper choice of index profile in each segment, a waveguide fiber is made which has a mode field diameter of about 9.5, low, positive total dispersion over the operating window 1530 nm to 1565 nm as well as effective area greater than 60 .mu.m.sup.2.

    摘要翻译： 公开了具有分段核设计的单模光纤。 特别地，芯包括三个段，每个段具有特征尺寸和折射率分布。 通过适当地选择每个段中的折射率分布，制造了一种波导光纤，其在工作窗口1530nm至1565nm处具有约9.5的模场直径，低的正的总色散以及大于60μm的有效面积。

    High performance single mode waveguide
    2.
    再颁专利
    High performance single mode waveguide 有权
    高性能单模波导

    公开(公告)号：USRE39028E1

    公开(公告)日：2006-03-21

    申请号：US10086222

    申请日：2002-02-27

    申请人： Ming-Jun Li ,  Yanming Liu ,  Daiping Ma ,  David Kinney Smith

    发明人： Ming-Jun Li ,  Yanming Liu ,  Daiping Ma ,  David Kinney Smith

    IPC分类号： G02B6/02

    摘要： Disclosed is a single made optical waveguide fiber having a segmented core design. In particular, the core comprises three segments, each having characteristic dimensions and refractive index profile. By proper choice of index profile in each segment, a waveguide fiber is made which has a mode field diameter of about 9.5, low, positive total dispersion over the operating window 1530 nm to 1565 nm as well as effective area greater than 60 μm2.

    摘要翻译： 公开了具有分段芯设计的单制光纤。 特别地，芯包括三个段，每个段具有特征尺寸和折射率分布。 通过适当地选择每个片段中的折射率分布，制造了一种波导光纤，其具有在操作窗口1530nm至1565nm以及大于60μm的有效面积的大约9.5的模场直径，低的正的总色散。 > 2 。

    System and method for simultaneously determining strain and temperature characteristics of an object
    7.
    发明授权
    System and method for simultaneously determining strain and temperature characteristics of an object 有权
    同时确定物体的应变和温度特性的系统和方法

    公开(公告)号：US08744782B2

    公开(公告)日：2014-06-03

    申请号：US12947066

    申请日：2010-11-16

    申请人： Xin Chen ,  Ming-Jun Li ,  Anping Liu ,  Daniel Aloysius Nolan

    发明人： Xin Chen ,  Ming-Jun Li ,  Anping Liu ,  Daniel Aloysius Nolan

    IPC分类号： G01L11/02 ,  G01L11/00 ,  G01K11/00 ,  G01K11/20

    CPC分类号： G01L1/243 ,  G01K11/32 ,  G01K2011/322 ,  G01L1/242

    摘要： A system for simultaneously determining strain and temperature characteristics of an object comprising: (i) at least one optical fiber having at least two Brillouin peaks; (ii) at least one connector securing the optical fiber to the object to be monitored; (iii) a laser positioned to provide laser light to said at least one optical fiber; (iv) a device measuring frequencies of said at least two Brillouin peaks, and determining frequency shifts of said at least two Brillouin peaks for said at least one optical fiber along the length of fiber; and (v) a system calculating strain and temperature characteristics along said fiber, based on the coefficients of strain and temperature as well as the measured Brillouin frequency shifts for said optical fiber along the length of said optical fiber.

    摘要翻译： 一种用于同时确定物体的应变和温度特性的系统，包括：（i）至少一个具有至少两个布里渊峰的光纤; （ii）至少一个将光纤固定到待监测对象的连接器; （iii）定位成向所述至少一个光纤提供激光的激光器; （iv）测量所述至少两个布里渊峰的频率的装置，以及确定沿所述光纤长度的所述至少一个光纤的所述至少两个布里渊峰的频移; 以及（v）基于应变和温度的系数以及所述光纤沿着所述光纤的长度测量的布里渊频移的系统来计算沿着所述光纤的应变和温度特性的系统。

    Few mode optical fibers for mode division multiplexing
    8.
    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
    9.
    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
    10.
    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。