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    Intrusion detecting system with polarization dependent sensing elements
    1.
    发明授权
    Intrusion detecting system with polarization dependent sensing elements 有权
    具有偏振相关感知元件的入侵检测系统

    公开(公告)号：US08319957B2

    公开(公告)日：2012-11-27

    申请号：US12432222

    申请日：2009-04-29

    申请人： Xin Chen ,  Michael Etienne ,  Daniel Aloysius Nolan

    发明人： Xin Chen ,  Michael Etienne ,  Daniel Aloysius Nolan

    IPC分类号： G01N21/00

    CPC分类号： G08B13/186

    摘要： A detection system includes a length of optical fiber and an OTDR coupled to the optical fiber. The OTDR includes a radiation source providing pulsed radiation to the fiber, a detector detecting radiation that is backscattered through the fiber, and a processor capable of analyzing the variation of the radiation that is backscattered through the fiber. At least two polarization dependent sensing elements are positioned along the length of optical fiber.

    摘要翻译： 检测系统包括一段光纤和耦合到光纤的OTDR。 OTDR包括向光纤提供脉冲辐射的辐射源，检测通过光纤反向散射的辐射的检测器和能够分析通过光纤反向散射的辐射的变化的处理器。 沿着光纤的长度定位至少两个偏振相关的感测元件。

    Intrusion Detecting System With Polarization Dependent Sensing Elements
    2.
    发明申请
    Intrusion Detecting System With Polarization Dependent Sensing Elements 有权
    具有极化依赖感知元件的入侵检测系统

    公开(公告)号：US20100277719A1

    公开(公告)日：2010-11-04

    申请号：US12432222

    申请日：2009-04-29

    申请人： Xin Chen ,  Michael Etienne ,  Daniel Aloysius Nolan

    发明人： Xin Chen ,  Michael Etienne ,  Daniel Aloysius Nolan

    IPC分类号： G01N21/00

    CPC分类号： G08B13/186

    摘要： A detection system includes a length of optical fiber and an OTDR coupled to the optical fiber. The OTDR includes a radiation source providing pulsed radiation to the fiber, a detector detecting radiation that is backscattered through the fiber, and a processor capable of analyzing the variation of the radiation that is backscattered through the fiber. At least two polarization dependent sensing elements are positioned along the length of optical fiber.

    摘要翻译： 检测系统包括一段光纤和耦合到光纤的OTDR。 OTDR包括向光纤提供脉冲辐射的辐射源，检测通过光纤反向散射的辐射的检测器和能够分析通过光纤反向散射的辐射的变化的处理器。 沿着光纤的长度定位至少两个偏振相关的感测元件。

    System and Method for Simultaneously Determining Strain and Temperature Characteristics of an Object
    3.
    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。

    Polarization maintaining and single polarization optical fiber
    6.
    发明授权
    Polarization maintaining and single polarization optical fiber 失效
    极化维护和单极化光纤

    公开(公告)号：US07697809B2

    公开(公告)日：2010-04-13

    申请号：US12220268

    申请日：2008-07-23

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

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

    IPC分类号： G02B6/032

    CPC分类号： G02B6/024

    摘要： 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

    摘要翻译： 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 所述应力部件包括与F共掺杂的二氧化硅和选自GeO2，P2O5，Y2O3，TiO2和Al2O3中的至少一种掺杂剂，其中应力部件与芯心之间的距离b满足以下等式：1＆nlE ; b / a <2。

    Detection System and Optical Fiber for Use in Such System
    7.
    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

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

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

    IPC分类号： G01N21/47

    CPC分类号： G01L1/242 ,  C03B2203/19 ,  C03B2203/30 ,  C03B2205/06 ,  G01M11/3181 ,  G02B6/02

    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。

    Solid type polarization maintaining fiber and apparatus
    9.
    发明授权
    Solid type polarization maintaining fiber and apparatus 失效
    固体型保偏纤维及其设备

    公开(公告)号：US07177512B2

    公开(公告)日：2007-02-13

    申请号：US11239788

    申请日：2005-09-29

    申请人： George Edward Berkey ,  Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Daniel Aloysius Nolan

    发明人： George Edward Berkey ,  Xin Chen ,  Joohyun Koh ,  Ming-Jun Li ,  Daniel Aloysius Nolan

    IPC分类号： G02B6/024

    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 exhibits polarization maintaining properties in a PMB situated below (i.e., at shorter wavelength than SPB), such that beat length normalized to 1550 nm wavelength is preferably less than 10 mm. The fiber (20) may be coupled to optical components in apparatus where single polarization or polarization maintaining 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。 纤维在位于低于（即在比SPB更短的波长）的PMB中表现出极化保持性能，使得标准化为1550nm波长的拍子长度优选小于10mm。 光纤（20）可以耦合到需要单极化或偏振保持特性的装置中的光学部件。

    System and method for simultaneously determining strain and temperature characteristics of an object
    10.
    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。