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    Large mode area optical fiber
    32.
    发明授权
    Large mode area optical fiber 有权
    大模光区域光纤

    公开(公告)号：US08797642B2

    公开(公告)日：2014-08-05

    申请号：US12669664

    申请日：2008-07-16

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

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

    IPC: G02B6/036 ,  H04B10/17

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

    Abstract: 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.

    Abstract translation: 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。

    DUAL COATED OPTICAL FIBERS AND METHODS FOR FORMING THE SAME
    33.
    发明申请
    DUAL COATED OPTICAL FIBERS AND METHODS FOR FORMING THE SAME 有权
    双涂层光纤及其形成方法

    公开(公告)号：US20130071078A1

    公开(公告)日：2013-03-21

    申请号：US13577292

    申请日：2011-02-17

    Applicant: Kevin Wallace Bennett ,  Joohyun Koh

    Inventor： Kevin Wallace Bennett ,  Joohyun Koh

    IPC: G02B6/02

    CPC classification number: G02B6/02 ,  C03C25/1065 ,  C03C25/32 ,  G02B6/02395

    Abstract: Dual coated optical fibers and methods for forming dual coated optical fibers are disclosed herein. The dual coated optical fibers include a glass fiber comprising a core region, a cladding region and a dual coating layer surrounding the glass fiber. The dual coating layer includes an inner coating and an outer coating. The inner coating surrounds the glass fiber and includes a first polyimide material. In one embodiment the first polyimide material also includes an adhesion promoter. The outer coating surrounds and is in direct contact with the inner coating and includes a second polyimide material having a decomposition threshold temperature greater than the first polyimide material. The second polyimide material may also have a modulus of elasticity greater than the first polyimide material and a moisture uptake lower than the first polyimide material.

    Abstract translation: 本文公开了双重涂覆的光纤和用于形成双重涂覆的光纤的方法。 双重涂覆的光纤包括玻璃纤维，其包括芯区域，包层区域和围绕玻璃纤维的双重涂层。 双涂层包括内涂层和外涂层。 内涂层包围玻璃纤维并且包括第一聚酰亚胺材料。 在一个实施方案中，第一聚酰亚胺材料还包括粘合促进剂。 外涂层包围并与内涂层直接接触，并且包括具有大于第一聚酰亚胺材料的分解阈值温度的第二聚酰亚胺材料。 第二聚酰亚胺材料也可以具有比第一聚酰亚胺材料大的弹性模量和低于第一聚酰亚胺材料的吸湿性。

    Detection system and optical fiber for use in such system
    35.
    发明授权
    Detection system and optical fiber for use in such system 有权
    用于这种系统的检测系统和光纤

    公开(公告)号：US07999930B2

    公开(公告)日：2011-08-16

    申请号：US12365417

    申请日：2009-02-04

    Applicant: Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Daniel Aloysius Nolan

    Inventor： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Daniel Aloysius Nolan

    IPC: G01N21/00

    CPC classification number: G01L1/242 ,  C03B2203/19 ,  C03B2203/30 ,  C03B2205/06 ,  G01M11/3181 ,  G02B6/02

    Abstract: A detection system comprising: (i) an optical fiber, the optical fiber having (a) a length L≧1 km; (b) beat length between 10 m and 100 m; and (c) beat length uniformity over any distance of at least 100 m within the length L is characterized by standard deviation σ, where |σ|≦10 m; (ii) an OTDR coupled to the fiber and including (a) a radiation source providing pulsed radiation to the fiber, (b) a detection system capable of detecting radiation that is backscattered back through the fiber; and (iii) at least one polarizer situated between the fiber and the detector, such that the backscattered radiation passes through the polarizer before reaching the detector.

    Abstract translation: 一种检测系统，包括：（i）光纤，所述光纤具有（a）长度L≥1km; （b）拍摄距离在10米至100米之间; 和（c）在长度L内的至少100米的任何距离上的击穿长度均匀性的特征在于标准偏差＆sgr，其中|＆sgr | |＆nlE; 10m; （ii）耦合到所述光纤的OTDR，并且包括（a）向所述光纤提供脉冲辐射的辐射源，（b）能够检测通过所述光纤反向散射的辐射的检测系统; 和（iii）位于光纤和检测器之间的至少一个偏振器，使得后向散射的辐射在到达检测器之前穿过偏振器。

    Double-clad optical fibers and devices with double-clad optical fibers
    36.
    发明授权
    Double-clad optical fibers and devices with double-clad optical fibers 有权
    双包层光纤和双包层光纤器件

    公开(公告)号：US07590324B1

    公开(公告)日：2009-09-15

    申请号：US12179086

    申请日：2008-07-24

    Applicant: Xin Chen ,  Joohyun Koh ,  Ming-Jun Li

    Inventor： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li

    IPC: G02B6/02

    CPC classification number: G02B6/02261 ,  G02B6/02342 ,  G02B6/02357 ,  G02B6/03633

    Abstract: A double-clad optical fiber includes a core, an inner cladding and an outer cladding of silica-based glass. The core may have a radius of less than about 5 μm, a first index of refraction n1 and does not contain any active rare-earth dopants. The inner cladding may surround the core and includes a radial thickness of at least about 25 μm, a numerical aperture of at least about 0.25, and a second index of refraction n2 such that n2

    Abstract translation: 双包层光纤包括芯，内包层和二氧化硅基玻璃的外包层。 芯可以具有小于约5μm的半径，第一折射率n1并且不包含任何活性稀土掺杂剂。 内包层可以围绕芯部并且包括至少约25μm的径向厚度，至少约0.25的数值孔径和第二折射率n2，使得n2

    Aluminum Doped Optical Fiber
    37.
    发明申请
    Aluminum Doped Optical Fiber 有权
    铝掺杂光纤

    公开(公告)号：US20090185781A1

    公开(公告)日：2009-07-23

    申请号：US12356169

    申请日：2009-01-20

    Applicant: Kevin Wallace Bennett ,  Joohyun Koh

    Inventor： Kevin Wallace Bennett ,  Joohyun Koh

    IPC: G02B6/036

    CPC classification number: G02B6/02395 ,  G01K2011/324 ,  G02B6/0288

    Abstract: According to one example of the invention an optical fiber comprises: (i) a core consisting of Al doped silica having a first index of refraction n1; (ii) at least one silica based cladding surrounding the core and having a second index of refraction n2, such that n1>n2; (iii) a hermetic carbon based coating surrounding said cladding, said hermetic coating being 300 nm-1000 nm thick; and (iv) a second coating surrounding said hermetic coating, said second coating being 5 μm to 80 μm thick.

    Abstract translation: 根据本发明的一个示例，光纤包括：（i）由具有第一折射率n1的Al掺杂二氧化硅组成的芯; （ii）至少一个围绕所述芯并且具有第二折射率n2的基于二氧化硅的包层，使得n1> n2; （iii）围绕所述包层的密封碳基涂层，所述密封涂层为300nm-1000nm厚; 和（iv）围绕所述密封涂层的第二涂层，所述第二涂层为5μm至80μm厚。

    Low bend loss coated optical fiber
    38.
    发明授权
    Low bend loss coated optical fiber 有权
    低折射损耗涂层光纤

    公开(公告)号：US07539381B2

    公开(公告)日：2009-05-26

    申请号：US11801896

    申请日：2007-05-11

    Applicant: Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu ,  Jianguo Wang

    Inventor： Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Anping Liu ,  Jianguo Wang

    IPC: G02B6/02

    CPC classification number: C03C25/106 ,  G02B6/02395 ,  G02B6/03683

    Abstract: An optical fiber includes a core and a cladding, said cladding having a refractive index nc a first coating directly contacting the cladding of said fiber, said coating having a thickness of less than 10 microns, said coating having a refractive index delta %=100×(ni2−nc2)/2ni2 less than −1 percent. In another aspect, an optical fiber includes a core and a cladding, said cladding having a refractive index nc, a first coating directly contacting the cladding of said fiber, said fiber comprising a glass diameter less than 100 microns, said coating having a thickness of at least 8 microns, said coating having a refractive index delta %=100×(ni2−nc2)/2ni2 less than −1 percent.

    Abstract translation: 光纤包括芯和包层，所述包层具有折射率nc，第一涂层直接接触所述纤维的包层，所述涂层的厚度小于10微米，所述涂层具有折射率δ％= 100×（ ni2-nc2）/ 2ni2小于-1％。 在另一方面，光纤包括芯和包层，所述包层具有折射率nc，直接接触所述纤维包层的第一涂层，所述纤维包含小于100微米的玻璃直径，所述涂层的厚度为 至少8微米，所述涂层具有小于-1％的折射率Δ％= 100×（ni2-nc2）/ 2ni2。

    Polarization Maintaining And Single Polarization Optical Fiber
    39.
    发明申请
    Polarization Maintaining And Single Polarization Optical Fiber 失效
    极化维护和单极化光纤

    公开(公告)号：US20090080843A1

    公开(公告)日：2009-03-26

    申请号：US12220268

    申请日：2008-07-23

    Applicant: Dana Craig Bookbinder ,  Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Daniel Aloysius Nolan

    Inventor： Dana Craig Bookbinder ,  Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Daniel Aloysius Nolan

    IPC: G02B6/02

    CPC classification number: G02B6/024

    Abstract: An optical fiber, comprising: (i) a core having a core center and a radius or a width a, (ii) a cladding surrounding the core, and (iii) at least one stress member situated proximate to the fiber core within the cladding, said stress member comprising silica co-doped with F and at least one dopant selected from the list consisting of: GeO2, P2O5, Y2O3, TiO2 and Al2O3, wherein distance b between the stress member and the core center satisfies the following equation: 1≦b/a

    Abstract translation: 1.一种光纤，包括：（i）具有芯中心和半径或宽度a的芯，（ii）围绕所述芯的包层，以及（iii）至少一个应力构件，位于所述包层内的所述纤维芯附近 所述应力构件包括与F共掺的二氧化硅和选自GeO2，P2O5，Y2O3，TiO2和Al2O3中的至少一种掺杂剂，其中应力构件和核心中心之间的距离b满足以下等式：1 <= b / a <2。

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