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    Chemical sensing system and method
    1.
    发明授权
    Chemical sensing system and method 有权
    化学传感系统及方法

    公开(公告)号：US08009294B2

    公开(公告)日：2011-08-30

    申请号：US12361664

    申请日：2009-01-29

    Applicant: Isaac Shpantzer ,  Jacob Khurgin ,  Arkady Kaplan ,  Pak Shing Cho ,  Yaakov Achiam

    Inventor： Isaac Shpantzer ,  Jacob Khurgin ,  Arkady Kaplan ,  Pak Shing Cho ,  Yaakov Achiam

    IPC: G01B9/02 ,  G01J3/45

    CPC classification number: G01J3/02 ,  G01J3/0205 ,  G01J3/0218 ,  G01J3/45 ,  G01J9/04 ,  G01N21/171 ,  G01N21/636 ,  G01N21/65 ,  G01N2021/1793 ,  G01N2021/655 ,  G02B26/06

    Abstract: A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical, such as explosives and the like, at a remote location. It may be used for solid residue detection on a surface. The system includes a novel light detector system with a matrix of optical elements focusing portions of a received light beam on input waveguides of an optical combiner. The combiner adjusts the phases of the received beam portions and combines them together to maximize the intensity of an output beam. The output beam is detected by a detector, and information about at least one of, absorption spectrum and concentration of the chemical is recovered. In the preferred embodiment the detector is a coherent detector based on 90-degrees optical hybrid.

    Abstract translation: 公开了一种光热干涉光谱系统，其在远程位置提供关于化学物质（例如爆炸物等）的信息。 它可用于表面上的固体残留物检测。 该系统包括具有光学元件矩阵的新型光检测器系统，将接收光束的部分聚焦在光合并器的输入波导上。 组合器调整接收的光束部分的相位并将它们组合在一起以最大化输出光束的强度。 输出光束由检测器检测，并且回收关于化学物质的吸收光谱和浓度中的至少一个的信息。 在优选实施例中，检测器是基于90度光学混合的相干检测器。

    Space diversity optical receiver and system and method using the same
    2.
    发明授权
    Space diversity optical receiver and system and method using the same 有权
    空间分集光接收机及系统及方法采用相同方式

    公开(公告)号：US07961997B2

    公开(公告)日：2011-06-14

    申请号：US12389803

    申请日：2009-02-20

    Applicant: Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    Inventor： Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    IPC: G02B6/26 ,  H04B10/06

    CPC classification number: H04B10/61

    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 optical beam portions is captured by a space diversity receiver that includes an optical beam combiner, which has a tree-like topology with interconnected waveguides, electro-optic phase shifters, and directional couplers. For each of the beam portions the phase of the phase shifter and the coupling ratio of coupler in the optical beam combiner are tuned sequentially to maximize the final output power in the final optical waveguide. A portion of the final output beam is used for the power detection and forming a feedback signal for the phases and coupling ratios adjustment. The data or information is recovered from the received final optical beam using coherent detection.

    Abstract translation: 提供了一种光束组合器，其可以有效地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。 多个光束部分由包括光束组合器的空间分集接收器捕获，光束组合器具有带有互连波导的树状拓扑结构，电光移相器和定向耦合器。 对于每个光束部分，顺序地调整移相器的相位和光束组合器中的耦合器的耦合比，以最大化最终光波导中的最终输出功率。 最终输出光束的一部分用于功率检测并形成用于相位和耦合比调节的反馈信号。 使用相干检测从所接收的最终光束中恢复数据或信息。

    CHEMICAL SENSING WITH NOISE PRE-COMPENSATION
    3.
    发明申请
    CHEMICAL SENSING WITH NOISE PRE-COMPENSATION 有权
    化学传感与噪声预补偿

    公开(公告)号：US20100290054A1

    公开(公告)日：2010-11-18

    申请号：US12711476

    申请日：2010-02-24

    Applicant: Pak Shing Cho

    Inventor： Pak Shing Cho

    IPC: G01J3/45

    CPC classification number: G01N21/171 ,  G01N21/45 ,  G01N2021/1731

    Abstract: This invention relates generally to the systems and methods for chemicals detection such as explosives and others, and more particularly to optical devices and the methods of their use based on sensing of gases and residue materials. This sensing includes detection of optical spectrum and relative concentration of the chemical followed by the chemical identification based on these data. The sensing is based on photothermal interferometry method modified by implementation of coherent optical detection using a balanced receiver, where the incoming optical signal is mixed with a local oscillator beam. An additional phase shift is embedded in the local oscillator beam for adaptively negating the background noise in the incoming optical signal thus improving the system performance.

    Abstract translation: 本发明一般涉及用于化学物质检测的系统和方法，例如爆炸物和其它物质，更具体地说涉及基于感测气体和残留物质的光学装置及其使用方法。 该检测包括基于这些数据检测光谱和化学品的相对浓度，然后进行化学鉴定。 感测是基于通过使用平衡接收机实现相干光学检测而修改的光热干涉测量方法，其中输入光信号与本地振荡器光束混合。 在本地振荡器波束中嵌入一个附加相移，用于自适应地抵消入射光信号中的背景噪声，从而提高系统性能。

    OPTICAL RECEIVER USING BEAM COMBINING AND SYSTEM USING THE SAME
    4.
    发明申请
    OPTICAL RECEIVER USING BEAM COMBINING AND SYSTEM USING THE SAME 有权
    使用光束组合的光接收器和使用其的系统

    公开(公告)号：US20090169221A1

    公开(公告)日：2009-07-02

    申请号：US12371249

    申请日：2009-02-13

    Applicant: Pak Shing Cho ,  Isaac Shpantzer ,  Jacob Khurgin

    Inventor： Pak Shing Cho ,  Isaac Shpantzer ,  Jacob Khurgin

    IPC: H04B10/06

    CPC classification number: G02B6/1225 ,  B82Y20/00 ,  G02B6/2808 ,  H04B10/61

    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 minimal loss of power. This is achieved by modulating the beam portions phase and coupling ratio of couplers in the optical beam combiner tuned to maximize the final output power. The data is recovered from the received optical beam using coherent detection.

    Abstract translation: 提供了一种光束组合器，其可以有效地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具有最小功率损失的单个光波导。 这是通过调制光束组合器中耦合器的光束部分相位和耦合比来调节的，以最大化最终输出功率来实现的。 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
    5.
    发明授权
    Coherent optical detector and coherent communication system and method 有权
    相干光检测器和相干通信系统及方法

    公开(公告)号：US07327913B2

    公开(公告)日：2008-02-05

    申请号：US10669130

    申请日：2003-09-22

    Applicant: Isaac Shpantzer ,  Arkady Kaplan ,  Aviv Salamon ,  Yaakov Achiam ,  Jacob B. Khurgin ,  Michael Tseytlin ,  Pak Shing Cho ,  Arthur Greenblatt ,  Christopher Kerr ,  Geoffrey Harston

    Inventor： Isaac Shpantzer ,  Arkady Kaplan ,  Aviv Salamon ,  Yaakov Achiam ,  Jacob B. Khurgin ,  Michael Tseytlin ,  Pak Shing Cho ,  Arthur Greenblatt ,  Christopher Kerr ,  Geoffrey Harston

    IPC: G02B6/12 ,  G02B6/26 ,  G02F1/03 ,  G02F1/07 ,  H04B10/06

    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.

    Abstract translation: 光学装置设置有第一和第二输入。 耦合的第一耦合耦合到第一输入并且产生至少第一和第二输出。 第二耦合器耦合到第二输入并且产生至少第一和第二输出。 第三耦合器耦合到第一耦合器的第一输出端和第二耦合器的第一输出端。 第四耦合器耦合到第一耦合器的第二输出端和第二耦合器的第二输出端。 第一和第二交叉波导具有被选择的角度，以最小化第一和第二交叉波导之间的串扰和损耗。 第一交叉波导将来自第一耦合器的第一或第二输出中的一个与第四耦合器的输入连接。 第二交叉波导将来自第二耦合器的第一或第二输出中的一个与第三耦合器的输入连接。 第一移相器耦合到第一和第二波导。 第一和第二波导连接第一或第二耦合器的输出之一和第三或第四耦合器的输入之一。 第一，第二，第三和第四耦合器，两个交叉波导和移相器各自形成为由电光材料制成的单个平面芯片的一部分。

    Method and system for acoustically tuning a light source
    6.
    发明授权
    Method and system for acoustically tuning a light source 有权
    声源调谐光源的方法和系统

    公开(公告)号：US06671425B1

    公开(公告)日：2003-12-30

    申请号：US10173581

    申请日：2002-06-18

    Applicant: Jacob B. Khurgin ,  Nadejda Reingand ,  Isaac Shpantzer ,  Israel Smilanski ,  Pak Shing Cho

    Inventor： Jacob B. Khurgin ,  Nadejda Reingand ,  Isaac Shpantzer ,  Israel Smilanski ,  Pak Shing Cho

    IPC: G02F1335

    CPC classification number: H04J14/005 ,  G02F1/125 ,  G02F1/21 ,  G02F2001/212 ,  H01S3/0635 ,  H01S3/0637 ,  H01S3/1068 ,  H01S3/1608 ,  H01S3/2383

    Abstract: The present invention relates to an integrated light source having first and second optical waveguides defining a first optical coupling region for coupling light therebetween. At least one of the optical waveguides includes a gain medium configured to emit light upon irradiation. The light source also includes a first acoustic wave source to subject the first optical coupling region to acoustic waves having a longitudinal frequency &ohgr;AC1, whereby a frequency of light propagating along one of the first and second waveguides differs from a frequency of light propagating along the other waveguide by an amount by an amount &ohgr;AC1.

    Abstract translation: 本发明涉及具有第一和第二光波导的集成光源，其限定用于在其间耦合光的第一光耦合区域。 光波导中的至少一个包括被配置为在照射时发光的增益介质。 光源还包括第一声波源，用于使第一光耦合区域具有纵向频率ωgaAC1的声波，由此沿着第一和第二波导中的一个传播的光的频率不同于沿另一个传播的光的频率 波导量的量为ωgaAC1。

    CHEMICAL SENSING SYSTEM AND METHOD
    7.
    发明申请
    CHEMICAL SENSING SYSTEM AND METHOD 有权
    化学传感系统及方法

    公开(公告)号：US20090236528A1

    公开(公告)日：2009-09-24

    申请号：US12361664

    申请日：2009-01-29

    Applicant: Isaac Shpantzer ,  Jacob Khurgin ,  Arkady Kaplan ,  Pak Shing Cho ,  Yaakov Achiam

    Inventor： Isaac Shpantzer ,  Jacob Khurgin ,  Arkady Kaplan ,  Pak Shing Cho ,  Yaakov Achiam

    IPC: G01J5/02 ,  G01J3/44

    CPC classification number: G01J3/02 ,  G01J3/0205 ,  G01J3/0218 ,  G01J3/45 ,  G01J9/04 ,  G01N21/171 ,  G01N21/636 ,  G01N21/65 ,  G01N2021/1793 ,  G01N2021/655 ,  G02B26/06

    Abstract: A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical, such as explosives and the like, at a remote location. It may be used for solid residue detection on a surface. The system includes a novel light detector system with a matrix of optical elements focusing portions of a received light beam on input waveguides of an optical combiner. The combiner adjusts the phases of the received beam portions and combines them together to maximize the intensity of an output beam. The output beam is detected by a detector, and information about at least one of, absorption spectrum and concentration of the chemical is recovered. In the preferred embodiment the detector is a coherent detector based on 90-degrees optical hybrid.

    Abstract translation: 公开了一种光热干涉光谱系统，其在远程位置提供关于化学物质（例如爆炸物等）的信息。 它可用于表面上的固体残留物检测。 该系统包括具有光学元件矩阵的新型光检测器系统，将接收光束的部分聚焦在光合并器的输入波导上。 组合器调整接收的光束部分的相位并将它们组合在一起以最大化输出光束的强度。 输出光束由检测器检测，并且回收关于化学物质的吸收光谱和浓度中的至少一个的信息。 在优选实施例中，检测器是基于90度光学混合的相干检测器。

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