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    System and method for simultaneously determining strain and temperature characteristics of an object
    23.
    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。

    Optical fiber with large effective area
    27.
    发明申请
    Optical fiber with large effective area 失效
    光纤有效面积大

    公开(公告)号：US20080304800A1

    公开(公告)日：2008-12-11

    申请号：US12070845

    申请日：2008-02-21

    申请人： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Xin Chen ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Daniel Aloysius Nolan ,  Pushkar Tandon

    发明人： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Xin Chen ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Daniel Aloysius Nolan ,  Pushkar Tandon

    IPC分类号： G02B6/02

    CPC分类号： G02B6/02014 ,  G02B6/02019 ,  G02B6/02357 ,  G02B6/02366 ,  G02B6/0365 ,  G02B6/03661 ,  G02B6/03688

    摘要： An optical fiber comprising: a glass core extending from a centerline to a radius R1; a glass cladding surrounding and in contact with the core, the cladding comprising:a first annular region extending from R1 to a radius R2, the first annular region comprising a radial width, W2=R2−R1, a second annular region extending from R2 to a radius R3, the second annular region comprising a radial width, W3=R3−R2, and a third annular region extending from R3 to an outermost glass radius R4; wherein (i) the core comprises a maximum relative refractive index, Δ1MAX, relative to the third annular region; (ii) wherein the first annular region comprises a radial width W2; and (iii) the second annular region comprises a minimum relative refractive index, Δ3MIN, relative to the third annular region wherein Δ1MAX>Δ2MAX>Δ3MIN, and Δ2MIN>Δ3MIN; and the core and the cladding provide a fiber with cable cutoff less than 1500 nm, dispersion at 1550 nm less than 12 ps/nm/km, effective area at 1550 nm greater than 60 μm2, and preferably greater than 70 μm2. The second annular cladding region may contain a plurality of randomly dispersed holes.

    摘要翻译： 一种光纤，包括：从中心线延伸到半径R1的玻璃芯; 围绕并与芯接触的玻璃包层，所述包层包括：从R1延伸到半径R2的第一环形区域，所述第一环形区域包括径向宽度W2 = R2-R1，从R2延伸到第二环形区域 半径R3，第二环形区域包括径向宽度，W3 = R3-R2，以及从R3延伸到最外侧玻璃半径R4的第三环状区域; 其中（i）所述芯包括相对于所述第三环形区域的最大相对折射率Delta1MAX; （ii）其中所述第一环形区域包括径向宽度W2; 和（iii）第二环形区域包括相对于第三环形区域的最小相对折射率Delta3MIN，其中Delta1MAX> Delta2MAX> Delta3MIN和Delta2MIN> Delta3MIN; 并且芯和包层提供具有小于1500nm的电缆截止的光纤，在1550nm处的色散小于12ps / nm / km，在1550nm处的有效面积大于60mum2，优选大于70mum2。 第二环形包层区域可以包含多个随机分布的孔。

    Large effective area fiber
    28.
    发明申请
    Large effective area fiber 有权
    大面积纤维有效面积

    公开(公告)号：US20080279517A1

    公开(公告)日：2008-11-13

    申请号：US12151171

    申请日：2008-05-05

    申请人： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Xin Chen ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Daniel Aloysius Nolan

    发明人： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Xin Chen ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Daniel Aloysius Nolan

    IPC分类号： G02B6/028

    CPC分类号： G02B6/0365 ,  G02B6/02019

    摘要： An optical fiber according to an embodiment of the present invention comprises: a glass core extending from a centerline to a radius R1 wherein R1 is greater than about 5 μm; a glass cladding surrounding and in contact with the core, the cladding comprising: (i) a first annular region extending from the radius R1 to a radius R2, the first annular region comprising a radial width, W2=R2−R1, (ii) a second annular region extending from the radius R2 to a radius R3, and comprising a radial width, W3=R3−R2, and (iii) a third annular region surrounding the second annular region and extending from the radius R3 to an outermost glass radius R4; wherein the core comprises a maximum relative refractive index, Δ1MAX, relative to the third annular region, and wherein Δ1MAX is greater than about 0.1% and less than about 0.3%; the first annular region has a refractive index delta Δ2(r) is less than about 0.025%; wherein the second annular region comprises a minimum relative refractive index, Δ3MIN, relative to the third annular region;wherein Δ1MAX>Δ2MAX>Δ3MIN, and Δ2MIN>Δ3MIN

    摘要翻译： 根据本发明实施例的光纤包括：从中心线延伸到半径R 1的玻璃芯，其中R 1>大于5μm; 围绕并与芯接触的玻璃包层，所述包层包括：（i）从半径R 1> 1半径R 2> 2延伸的第一环形区域，第一 包括径向宽度的第二环形区域，（ii）从半径R < SUB> 2 到半径R 3 3，并且包括径向宽度，W 3 3 = R 3→N < 2，和（iii）围绕第二环形区域并从半径R 3 3延伸到最外侧玻璃半径R 4的第三环形区域; 其中所述芯包括相对于所述第三环形区域的最大相对折射率，Δ1MAX1，并且其中Δ1MAX1大于约0.1％且小于约0.3％ ; 第一环形区域具有小于约0.025％的折射率差ΔΔ2（r）; 其中所述第二环形区域包括相对于所述第三环形区域的最小相对折射率，Δ3 NIN; 其中Delta 1MAX 增量2MAX 三角洲3MIN和三角洲2MIN 三角洲3IN > <0; 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，并且在1550nm处的有效面积大于95μm2，并且在20℃下的弯曲损耗为<= 0.5dB / mm直径心轴。