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52 条记录 (耗时 0.043 秒)

    SPACE DIVERSITY RECEIVER FOR OPTICAL COMMUNICATIONS
    21.
    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

    申请人： Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    发明人： Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    IPC分类号： H04B10/06 ,  G02B6/26

    CPC分类号： B82Y20/00 ,  G02B6/1225 ,  H04B10/11

    摘要： 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.

    摘要翻译： 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。

    SPACE DIVERSITY OPTICAL RECEIVER AND SYSTEM AND METHOD USING THE SAME
    22.
    发明申请
    SPACE DIVERSITY OPTICAL RECEIVER AND SYSTEM AND METHOD USING THE SAME 有权
    空间多样性光接收机及其系统及方法

    公开(公告)号：US20090185811A1

    公开(公告)日：2009-07-23

    申请号：US12389803

    申请日：2009-02-20

    申请人： Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    发明人： Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

    IPC分类号： H04B10/06 ,  G01J1/10 ,  G02B6/26

    CPC分类号： H04B10/61

    摘要： 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.

    摘要翻译： 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。

    COHERENT OPTICAL DETECTOR AND COHERENT COMMUNICATION SYSTEM AND METHOD
    23.
    发明申请
    COHERENT OPTICAL DETECTOR AND COHERENT COMMUNICATION SYSTEM AND METHOD 有权
    相关光学检测器和相关通信系统及方法

    公开(公告)号：US20090142051A1

    公开(公告)日：2009-06-04

    申请号：US11938655

    申请日：2007-11-12

    申请人： Isaac Shpantzer ,  Aviv Salamon ,  Arkady Kaplan ,  Pak Shing Cho ,  Jacob Khurgin ,  Yaakov Achiam ,  Arthur Greenblatt ,  Geofrey Harston

    发明人： Isaac Shpantzer ,  Aviv Salamon ,  Arkady Kaplan ,  Pak Shing Cho ,  Jacob Khurgin ,  Yaakov Achiam ,  Arthur Greenblatt ,  Geofrey Harston

    IPC分类号： H04B10/08 ,  G02B6/26 ,  G02B6/12 ,  H04B10/06

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

    摘要： 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.

    摘要翻译： 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。

    Coherent photothermal interferometric spectroscopy system and method for chemical sensing
    25.
    发明申请
    Coherent photothermal interferometric spectroscopy system and method for chemical sensing 有权
    相干光热干涉光谱系统和化学感测方法

    公开(公告)号：US20050105099A1

    公开(公告)日：2005-05-19

    申请号：US10947640

    申请日：2005-01-13

    申请人： Isaac Shpantzer ,  Jacob Khurgin ,  Pak Cho ,  Yaakov Achiam

    发明人： Isaac Shpantzer ,  Jacob Khurgin ,  Pak Cho ,  Yaakov Achiam

    IPC分类号： G01B9/02 ,  G01N21/17

    CPC分类号： G01N21/171 ,  G01J3/4338 ,  G01N21/39 ,  G01N21/65 ,  G01N2021/655

    摘要： A photo-thermal, interferometric spectroscopy system is disclosed that provides information about a chemical at a remote location. A first light source assembly is included that emits a first beam. The first beam has one or more wavelengths that interact with the chemical and change a refractive index of the chemical. A second laser produces a second beam. The second beam interacts with the chemical resulting in a third beam with a phase change that corresponds with the change of the refractive index of the chemical. A detector system is positioned remote from the chemical to receive at least a portion of the third beam. The detector system provides information on a phase change in the third beam relative to the second beam that is indicative of at least one of, absorption spectrum and concentration of the chemical.

    摘要翻译： 公开了一种光热干涉光谱系统，其提供关于远程位置处的化学物质的信息。 包括发射第一光束的第一光源组件。 第一光束具有与化学物质相互作用并改变化学物质折射率的一种或多种波长。 第二激光器产生第二光束。 第二束与化学物质相互作用，导致具有与化学物质的折射率变化相对应的相变的第三光束。 检测器系统定位成远离化学品以接收第三束的至少一部分。 检测器系统提供关于相对于第二光束的第三光束相位变化的信息，其指示化学品的吸收光谱和浓度中的至少一个。

    SPATIAL MULTIPLEXING FOR OPTICAL TRANSMISSION
    29.
    发明申请
    SPATIAL MULTIPLEXING FOR OPTICAL TRANSMISSION 审中-公开
    用于光传输的空间多路复用

    公开(公告)号：US20140029941A1

    公开(公告)日：2014-01-30

    申请号：US13560450

    申请日：2012-07-27

    申请人： Alexandre M. Bratkovski ,  Jacob Khurgin ,  Wayne Victor Sorin ,  Michael Renne Ty Tan

    发明人： Alexandre M. Bratkovski ,  Jacob Khurgin ,  Wayne Victor Sorin ,  Michael Renne Ty Tan

    IPC分类号： H04J14/00

    CPC分类号： H04J14/04

    摘要： A system includes an optical Y-junction coupler to receive a first modulated optical signal on a wide input path of the optical Y-junction coupler and to receive a second modulated optical signal on a narrow input path of the optical Y-junction coupler, wherein the optical Y-junction coupler generates a combined optical signal from signals received on the wide input path and the narrow input path. A multimode waveguide receives the combined optical signal from the optical Y-junction coupler and propagates a spatially multiplexed optical output signal along a transmission path.

    摘要翻译： 一种系统包括光学Y结耦合器，用于在光学Y形耦合耦合器的宽输入路径上接收第一调制光信号并且在光学Y形耦合耦合器的窄输入路径上接收第二调制光信号，其中 光学Y结耦合器从宽输入路径和窄输入路径上接收的信号产生组合光信号。 多模波导从光学Y结耦合器接收组合的光信号，并沿着传输路径传播空间复用的光输出信号。

    LASER COMMUNICATION SYSTEM
    30.
    发明申请
    LASER COMMUNICATION SYSTEM 有权
    激光通信系统

    公开(公告)号：US20130108279A1

    公开(公告)日：2013-05-02

    申请号：US13287555

    申请日：2011-11-02

    申请人： Alexandre M. Bratkovski ,  Jacob Khurgin

    发明人： Alexandre M. Bratkovski ,  Jacob Khurgin

    IPC分类号： H04B10/06

    CPC分类号： H04B10/69 ,  H01S5/0427 ,  H01S5/18302 ,  H01S5/18358 ,  H04B10/5563 ,  H04B10/676

    摘要： A laser communication system and method are disclosed. The laser communication system includes a laser receiver system to receive a frequency-shift keyed (FSK) optical signal encoded with a plurality of data signals. The laser receiver system including an FSK differential detection system that includes a plurality of differential detection filters that can each receive the FSK optical signal and generate an output. The FSK differential detection system can demodulate the FSK optical signal into a multi-bit digital code corresponding to a frequency of the FSK optical signal based on the output of each of the plurality of differential detection filters.

    摘要翻译： 公开了一种激光通信系统和方法。 激光通信系统包括用于接收用多个数据信号编码的频移键控（FSK）光信号的激光接收机系统。 该激光接收机系统包括一个FSK差分检测系统，该系统包括多个差分检测滤波器，每个差分检测滤波器可接收FSK光信号并产生输出。 FSK差分检测系统可以基于多个差分检测滤波器的输出，将FSK光信号解调为与FSK光信号的频率对应的多位数字码。