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    Solid type single polarization fiber and apparatus
    5.
    发明授权
    Solid type single polarization fiber and apparatus 失效
    固体型单极化光纤及其装置

    公开(公告)号：US06970632B2

    公开(公告)日：2005-11-29

    申请号：US10837861

    申请日：2004-05-03

    申请人： George E. Berkey ,  Xin Chen

    发明人： George E. Berkey ,  Xin Chen

    IPC分类号： G02B6/024 ,  G02B6/036 ,  G02B6/22

    CPC分类号： G02B6/03627 ,  G02B6/024 ,  G02B6/0281 ,  G02B6/03694

    摘要： Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, the moat (40) having a second refractive index (n2), an outer dimension (c) and an outer dimension (d), and a cladding (50) surrounding the moat (40), the cladding (50) having a third refractive index (n3), wherein n1>n3>n2, a ratio of b/a is between 1.5 and 5.0, and a ratio of d/a is between 2.0 and 7.0. The fiber supports a single (one and only one) polarization within a Single Polarization Band (SPB). The fiber (20) may be coupled to optical components in apparatus where single polarization properties are desired.

    摘要翻译： 公开了一种光纤（20），其具有具有短尺寸（a），长尺寸（b）和第一折射率（n <1> 1）的中心横向细长芯部（30）， 围绕中央横向细长的芯的护城河（40），护城河（40）具有第二折射率（n 2/2），外部尺寸（c）和外部尺寸（d），以及 围绕护城河（40）的包层（50），包层（50）具有第三折射率（n 3/3），其中n 1 n 3 < / SUB >> n 2，b / a的比例在1.5和5.0之间，d / a的比率在2.0和7.0之间。 光纤支持在单极化带（SPB）内的单一（仅一个）极化。 纤维（20）可以耦合到需要单极化性质的设备中的光学部件。

    Bend insensitive optical fibers with low refractive index glass rings
    6.
    发明授权
    Bend insensitive optical fibers with low refractive index glass rings 有权
    具有低折射率玻璃环的弯曲不敏感光纤

    公开(公告)号：US08428415B2

    公开(公告)日：2013-04-23

    申请号：US12351221

    申请日：2009-01-09

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

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

    IPC分类号： G02B6/036

    CPC分类号： G02B6/0365 ,  G02B6/03605 ,  G02B6/03633 ,  Y10T428/2962

    摘要： An optical fiber includes a silica-based glass portion having an outer diameter of less than about 120 μm. The glass portion comprises a core, an inner cladding and a low index ring. The core comprises an index of refraction n1, and a relative refractive index percent Δ1% relative to pure silica glass. The inner cladding surrounds the core and comprises an index of refraction n2, a radial thickness of less than about 40 μm and a relative refractive index percent Δ2% relative to pure silica glass, wherein Δ1%>Δ2% and the difference between Δ1% and Δ2% is greater than 0.1%. The low index ring surrounds the inner cladding and comprises boron and fluorine, a radial thickness of less than about 20 μm, an index of refraction n3 and a third relative refractive index percent Δ3% relative to pure silica glass, wherein Δ2%>Δ3% and Δ3% is less than −0.5%.

    摘要翻译： 光纤包括外径小于约120μm的二氧化硅基玻璃部分。 玻璃部分包括芯，内包层和低折射率环。 芯包括折射率n1，相对于纯石英玻璃的相对折射率百分比Δ1％。 内部包层围绕芯部并且包括折射率n2，小于约40μm的径向厚度和相对于纯石英玻璃的相对折射率百分比Δ2％，其中Delta1％> Delta2％，Delta1％和 Delta2％大于0.1％。 低折射率环围绕内包层并且包括硼和氟，相对于纯二氧化硅玻璃的径向厚度小于约20μm，折射率n3和第三相对折射率百分比Δ3％，其中Delta2％> Delta3％ 而Delta3％小于-0.5％。

    METHOD FOR PRODUCING OPTICAL FIBER HAVING CONTROLLED PERTURBATIONS
    7.
    发明申请
    METHOD FOR PRODUCING OPTICAL FIBER HAVING CONTROLLED PERTURBATIONS 有权
    用于生产具有控制性刺激的光纤的方法

    公开(公告)号：US20130047676A1

    公开(公告)日：2013-02-28

    申请号：US13587091

    申请日：2012-08-16

    申请人： Xin Chen ,  Charles Frederick Laing ,  Ming-Jun Li ,  Anping Liu ,  Eric John Mozdy ,  Joseph Doull Thaler

    发明人： Xin Chen ,  Charles Frederick Laing ,  Ming-Jun Li ,  Anping Liu ,  Eric John Mozdy ,  Joseph Doull Thaler

    IPC分类号： C03B37/025

    CPC分类号： C03B37/02745 ,  C03B37/02763 ,  C03B2203/06 ,  C03B2203/18 ,  C03B2203/20 ,  Y02P40/57

    摘要： A method for producing an optical fiber is provided. The method includes the steps of drawing an optical fiber from a heated glass source in a furnace and introducing index perturbations to the optical fiber via a plurality of perturbation sources arranged at a plurality of different azimuthal locations. The index perturbations are introduced synchronously at different locations along the axial length of the fiber by the plurality of perturbation sources in a generally helical pattern on the outside surface of the fiber in one embodiment. According to another embodiment, the index perturbations are introduced by the plurality of perturbation sources at different frequencies.

    摘要翻译： 提供一种光纤的制造方法。 该方法包括以下步骤：在炉中从加热的玻璃源中拉出光纤，并且通过布置在多个不同方位位置处的多个扰动源将折射率扰动引入光纤。 在一个实施例中，通过多个扰动源以纤维的外表面上的大致螺旋图案沿着纤维的轴向长度在不同位置同时引入折射率扰动。 根据另一实施例，索引扰动由多个扰动源以不同的频率引入。

    System and Method for Simultaneously Determining Strain and Temperature Characteristics of an Object
    8.
    发明申请
    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：US20120123702A1

    公开(公告)日：2012-05-17

    申请号：US12947066

    申请日：2010-11-16

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

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

    IPC分类号： G06F19/00 ,  G01K13/00 ,  G01L1/00

    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。

    Large Mode Area Optical Fiber
    10.
    发明申请
    Large Mode Area Optical Fiber 有权
    大模光区域光纤

    公开(公告)号：US20100195194A1

    公开(公告)日：2010-08-05

    申请号：US12669664

    申请日：2008-07-16

    申请人： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu

    发明人： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu

    IPC分类号： H01S3/09 ,  G02B6/14 ,  G02B6/036 ,  H01S3/067 ,  B05D5/06

    CPC分类号： G02B6/14 ,  G02B6/024 ,  G02B6/03644 ,  G02B6/03661 ,  G02B6/03688 ,  H01S3/06708 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/08045 ,  H01S3/094007

    摘要： A large-mode-area (LMA) optical fiber (10) that operates as a single-mode optical fiber. The optical fiber includes a core region (20) surrounded by an inner cladding (32), which in turn is surrounded by an outer cladding (40). The inner cladding includes at least one up-doped ring region (32R1). The ring region is configured to form a large attenuation differential between the higher-order modes and the fundamental mode so only that the fundamental mode remains traveling in the optical fiber. If necessary, the optical fiber can include a bend (10B) having a select “resonant” bend diameter (DB) that increases the relative attenuation of the fundamental and higher-order modes. The optical fiber supports an effective mode field diameter (MFD) of up to 40 μm to 50 μm. As a result, detrimental non-linear effects are suppressed, which allows the optical fiber to carry substantially more optical power than conventional LMA optical fibers. The LMA optical fiber is thus eminently suited for a number of optical-fiber-based applications calling for high optical power, such as fiber lasers and pump sources for wavelength conversion.

    摘要翻译： 作为单模光纤工作的大模（LMA）光纤（10）。 光纤包括由内包层（32）包围的芯区域（20），该内部区域又由外包层（40）围绕。 内包层包括至少一个上掺杂环区（32R1）。 环形区域被配置为在高阶模式和基模之间形成大的衰减差分，从而仅使基本模式保持在光纤中行进。 如果需要，光纤可以包括具有选择的“共振”弯曲直径（DB）的弯曲（10B），该弯曲直径（DB）增加了基极和高阶模的相对衰减。 光纤支持高达40μm至50μm的有效模场直径（MFD）。 结果，抑制了有害的非线性效应，这使得光纤比传统的LMA光纤承载更多的光功率。 因此，LMA光纤非常适合于需要高光功率的多个基于光纤的应用，例如用于波长转换的光纤激光器和泵浦光源。