Large Effective Area Optical Fiber
    11.
    发明申请
    Large Effective Area Optical Fiber 有权
    大型有效面积光纤

    公开(公告)号:US20090148113A1

    公开(公告)日:2009-06-11

    申请号:US12256573

    申请日:2008-10-23

    IPC分类号: G02B6/036

    摘要: An optical fiber comprising: (i) a glass core (20) extending from a centerline and including a central core region (22) with an alpha value of less than 2, a first annular core region (24) surrounding the central core region (22), and a second annular core region (26) surrounding the first annular core region (24), wherein the second annular core region (26) has a higher maximum relative refractive index percent Δ26MAX than that maximum relative refractive index percent Δ24MAX of the first annular core region (24); and (ii) a glass cladding (30) surrounding and in contact with the core (20), the cladding comprising: (a) a first annular cladding region (32) extending from a radius R32 to a radius R34, (b) a second annular cladding region (34) extending from the radius R34 to a radius R36, (c) a third annular cladding region (36) surrounding the second annular region (34) and extending from the radius R34 to an outermost glass radius R36; wherein the core (20) comprises a maximum relative refractive index percent, ΔCMAX; wherein said first annular cladding region (32) comprises relative refractive index percent Δ32(r) % the second annular cladding region (34) comprises a minimum relative refractive index percent, Δ34 MIFN, wherein ΔCMAX>Δ32MAX>Δ34MIN, and Δ34MIN

    摘要翻译: 一种光纤,包括:(i)玻璃芯(20),其从中心线延伸并且包括具有小于2的α值的中心芯区域(22);围绕所述中心芯区域的第一环形芯区域(24) 22)和围绕所述第一环形芯区域(24)的第二环形芯区域(26),其中所述第二环形芯区域(26)具有比所述第二环形芯区域(24)的最大相对折射率百分比ΔAMAX 第一环形芯区域(24); 围绕和与芯(20)接触的玻璃包层(30),所述包层包括:(a)从半径R32延伸到半径R34的第一环形包层区域(32),(b) 从半径R34延伸到半径R36的第二环形包层区域(34),(c)围绕第二环形区域(34)并从半径R34延伸到最外侧玻璃半径R36的第三环形包层区域(36) 其中所述芯部(20)包括最大相对折射率百分比ΔCMAX; 其中所述第一环形包层区域(32)包括相对折射率百分比Δ32(r)%,所述第二环形包层区域(34)包括最小相对折射率百分比,Δ34MIFN,其中DeltaCMAX> Delta32MAX> Delta34MIN和Delta34MIN <-0.1 ; 并且其中所述芯和所述包层提供光纤,所述光纤具有小于1500nm的电缆,1550nm处的色散为3psps / nm / km,在1550nm处的有效面积大于75mum2。 第二环形包层区域可以包含多个随机分布的孔。

    Large effective area optical fiber
    13.
    发明授权
    Large effective area optical fiber 有权
    大面积有效面积的光纤

    公开(公告)号:US07853110B2

    公开(公告)日:2010-12-14

    申请号:US12256573

    申请日:2008-10-23

    IPC分类号: G02B6/36

    摘要: An optical fiber comprising: (i) a glass core (20) extending from a centerline and including a central core region (22) with an alpha value of less than 2, a first annular core region (24)surrounding the central core region (22), and a second annular core region (26) surrounding the first annular core region (24), wherein the second annular core region (26) has a higher maximum relative refractive index percent Δ26MAX than that maximum relative refractive index percent Δ24MAX of the first annular core region (24); and (ii) a glass cladding (30) surrounding and in contact with the core (20), the cladding comprising: (a) a first annular cladding region (32) extending from a radius RC3 to a radius R32, (b) a second annular cladding region (34) extending from the radius R32 to a radius R34, (c) a third annular cladding region (36) surrounding the second annular region (34) and extending from the radius R34 to an outermost glass radius R36; wherein the core (20) comprises a maximum relative refractive index percent ΔCMAX; wherein said first annular cladding region (32) comprises relative refractive index percent Δ32(r) % the second annular cladding region (34) comprises a minimum relative refractive index percent, Δ34 MIN, wherein ΔCMAX>Δ32MAX>Δ34MIN, and Δ34MIN

    摘要翻译: 一种光纤,包括:(i)玻璃芯(20),其从中心线延伸并且包括具有小于2的α值的中心芯区域(22);围绕所述中心芯区域的第一环形芯区域(24) 22)和围绕所述第一环形芯区域(24)的第二环形芯区域(26),其中所述第二环形芯区域(26)具有比所述最大相对折射率百分比Dgr更高的最大相对折射率百分比 ; 24MAX的第一环形芯区域(24); 围绕所述芯(20)并与所述芯(20)相接触的玻璃包层(30),所述包层包括:(a)从半径RC3延伸到半径R32的第一环形包层区域(32),(b) 从半径R32延伸到半径R34的第二环形包层区域(34),(c)围绕第二环形区域(34)并从半径R34延伸到最外侧玻璃半径R36的第三环形包层区域(36) 其中所述芯部(20)包括最大相对折射率百分比&Dgr; CMAX; 其中所述第一环形包层区域(32)包括相对折射率百分比&Dgr; 32(r)%,所述第二环形包层区域(34)包括最小相对折射率百分比,&Dgr; 34 MIN,其中&Dgr; CMAX>&Dgr; 32MAX >&Dgr; 34MIN,&Dgr; 34MIN <-0.1; 并且其中所述芯和所述包层提供具有小于1500nm的电缆截止的光纤,1550nm处的色散3至6ps / nm / km,以及在大于75μm2的1550nm处的有效面积。 第二环形包层区域可以包含多个随机分布的孔。

    Bend insensitive optical fibers with low refractive index glass rings
    14.
    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

    IPC分类号: G02B6/036

    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
    15.
    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

    IPC分类号: C03B37/025

    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
    16.
    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

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

    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
    17.
    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

    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。

    Detection System and Optical Fiber for Use in Such System
    19.
    发明申请
    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:US20100085558A1

    公开(公告)日:2010-04-08

    申请号:US12365417

    申请日:2009-02-04

    IPC分类号: G01N21/47

    摘要: 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.

    摘要翻译: 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。