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    Laser vibrometry with coherent detection
    55.
    发明申请
    Laser vibrometry with coherent detection 有权
    激光振动测量与相干检测

    公开(公告)号：US20050185191A1

    公开(公告)日：2005-08-25

    申请号：US11055547

    申请日：2005-02-09

    Applicant: Isaac Shpantzer ,  Aviv Salamon ,  Pak Cho

    Inventor： Isaac Shpantzer ,  Aviv Salamon ,  Pak Cho

    IPC: G01B9/02

    CPC classification number: G01H9/00 ,  G01H9/004

    Abstract: An optical system provides information about tangential vibration components of a surface at remote location. The optical system includes a light source assembly that emits first and second beams, each having one or more wavelengths and one or two polarizations. The first and second beams are directed to the interrogated surface. A detector system is positioned to detect a third beam formed by at least a portion of the first and second beams being reflected from the interrogated surface. The first, second and third beams having incident and reflection angles relative to the interrogated surface that do not lay in a same plane. The detector system positioned remotely from the interrogated surface, and providing information on a phase change in the third beam relative to the first and second beam. The phase change is indicative of at least one surface vibration vector component of the interrogated surface. The detector system is a 90 degree optical hybrid balanced detector with four photodiodes.

    Abstract translation: 光学系统提供关于远程位置处的表面的切向振动分量的信息。 光学系统包括发射第一和第二光束的光源组件，每个光束具有一个或多个波长和一个或两个偏振。 第一和第二光束被引导到被询问的表面。 检测器系统被定位成检测由被询问的表面反射的第一和第二光束的至少一部分形成的第三光束。 第一，第二和第三光束具有相对于被询问的表面的入射角和反射角度，其不处于同一平面内。 检测器系统远离询问的表面定位，并且提供关于第三束相对于第一和第二光束的相位变化的信息。 相变表示询问表面的至少一个表面振动矢量分量。 检测器系统是具有四个光电二极管的90度光学混合平衡检测器。

    Space diversity receiver for optical communications
    57.
    发明授权
    Space diversity receiver for optical communications 有权
    用于光通信的空间分集接收机

    公开(公告)号：US07949262B2

    公开(公告)日：2011-05-24

    申请号：US12392559

    申请日：2009-02-25

    Applicant: Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    Inventor： Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    IPC: G02B6/26 ,  H04B10/06

    CPC classification number: B82Y20/00 ,  G02B6/1225 ,  H04B10/11

    Abstract: An optical beam combiner is provided, which allows efficient collection of light for various applications: non-line of sight and free-space optical communications, remote sensing, optical imaging and others. A multitude of transverse scattered optical beam portions is captured by the multi-aperture array positioned perpendicular to the beam projection direction. These beam portions are combined first into a single optical waveguide with modulating the beam portions phase and coupling ratio of directional couplers in the optical beam combiner tuned to maximize the final output power. A portion of the output beam is used for the power detection and forming a feedback signal for the phases and coupling ratios adjustment. The data is recovered from the received optical beam using coherent detection.

    Abstract translation: 提供了一种光束组合器，其允许有效收集用于各种应用的光：非视距和自由空间光通信，遥感，光学成像等。 多个横向散射光束部分被垂直于光束投影方向定位的多孔径阵列捕获。 这些光束部分首先组合成单个光波导，调制光束组合器中的定向耦合器的光束部分相位和耦合比，以最大化最终输出功率。 输出光束的一部分用于功率检测，并形成相位和耦合比调整的反馈信号。 使用相干检测从接收的光束恢复数据。

    Coherent optical detector and coherent communication system and method
    58.
    发明授权
    Coherent optical detector and coherent communication system and method 有权

    公开(公告)号：US07715720B2

    公开(公告)日：2010-05-11

    申请号：US11695920

    申请日：2007-04-03

    Applicant: Isaac Shpantzer ,  Aviv Salamon ,  Pak Shing Cho

    Inventor： Isaac Shpantzer ,  Aviv Salamon ,  Pak Shing Cho

    IPC: H04B10/00 ,  H04J14/00 ,  H04J14/02

    CPC classification number: H04B10/50 ,  G02B6/12004 ,  G02B6/12007 ,  G02B2006/12147 ,  H04B10/60 ,  H04B10/61 ,  H04B10/613 ,  H04B10/614 ,  H04B10/6162 ,  H04B10/63 ,  H04J14/005 ,  H04J14/02

    Abstract: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides. The first and second waveguides connect one of the outputs of the first or second coupler and one of the inputs of the third or fourth couplers. The first, second, third and fourth couplers, the two crossing waveguides and the phase shifter are each formed as part of a single planar chip made of an electro-optical material.

    Inspection system and method
    59.
    发明申请
    Inspection system and method 有权
    检验制度和方法

    公开(公告)号：US20090295576A1

    公开(公告)日：2009-12-03

    申请号：US12539484

    申请日：2009-08-11

    Applicant: Isaac Shpantzer ,  Yaakov Achiam ,  Nadejda Reingand

    Inventor： Isaac Shpantzer ,  Yaakov Achiam ,  Nadejda Reingand

    IPC: G08B21/00 ,  G08B17/12

    CPC classification number: G01T1/167 ,  G01J3/4338 ,  G01N21/171 ,  G01N21/39 ,  G01N21/65 ,  G01N2021/655 ,  G01V5/0016

    Abstract: A method and system for nuclear substance revealing using muon detection technique is presented. In some aspects, naturally occurred muons are selected from the flow of charged particles. Muon coordinate and incidence angle measured above and below the interrogated volume can be used for the decision making on the presence of nuclear substance inside the volume. The system is adapted for performing measurements on moving objects such as moving trucks. A combination of the nuclear substance detection system with an explosive sensing system is presented.

    Abstract translation: 提出了一种使用muon检测技术进行核物质揭示的方法和系统。 在一些方面，天然发生的μ子选自带电粒子的流动。 在询问体积之上和之下测量的Muon坐标和入射角可用于决定体内核物质的存在。 该系统适于对诸如移动卡车的移动物体进行测量。 介绍了核物质检测系统与爆炸传感系统的结合。

    SPACE DIVERSITY RECEIVER FOR OPTICAL COMMUNICATIONS
    60.
    发明申请
    SPACE DIVERSITY RECEIVER FOR OPTICAL COMMUNICATIONS 有权
    空间多样性接收机用于光通信

    公开(公告)号：US20090269083A1

    公开(公告)日：2009-10-29

    申请号：US12392559

    申请日：2009-02-25

    Applicant: Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    Inventor： Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    IPC: H04B10/06 ,  G02B6/26

    CPC classification number: B82Y20/00 ,  G02B6/1225 ,  H04B10/11

    Abstract: An optical beam combiner is provided, which allows efficient collection of light for various applications: non-line of sight and free-space optical communications, remote sensing, optical imaging and others. A multitude of transverse scattered optical beam portions is captured by the multi-aperture array positioned perpendicular to the beam projection direction. These beam portions are combined first into a single optical waveguide with modulating the beam portions phase and coupling ratio of directional couplers in the optical beam combiner tuned to maximize the final output power. A portion of the output beam is used for the power detection and forming a feedback signal for the phases and coupling ratios adjustment. The data is recovered from the received optical beam using coherent detection.

    Abstract translation: 提供了一种光束组合器，其允许有效收集用于各种应用的光：非视距和自由空间光通信，遥感，光学成像等。 多个横向散射光束部分被垂直于光束投影方向定位的多孔径阵列捕获。 这些光束部分首先组合成单个光波导，调制光束组合器中的定向耦合器的光束部分相位和耦合比，以最大化最终输出功率。 输出光束的一部分用于功率检测，并形成相位和耦合比调整的反馈信号。 使用相干检测从接收的光束恢复数据。

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