公开(公告)号：US20120014470A1

公开(公告)日：2012-01-19

申请号：US13242073

申请日：2011-09-23

Applicant: Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

Inventor： Pak Shing Cho ,  Jacob Khurgin ,  Isaac Shpantzer

IPC: H04L27/20 ,  H04L27/18 ,  H04B10/04

CPC classification number: G02F1/225 ,  G02F2201/126 ,  G02F2203/06 ,  H04B10/2543 ,  H04B10/505 ,  H04B10/5053 ,  H04B10/5057 ,  H04B10/50577 ,  H04B10/508 ,  H04B10/532 ,  H04B10/541 ,  H04B10/5561 ,  H04B10/60 ,  H04J14/005 ,  H04J14/02 ,  H04J14/08 ,  H04L7/0075

Abstract: The method and system are disclosed for automatic feedback control of integrated optical quadrature modulator for generation of optical quaternary phase-shift-keyed signal in coherent optical communications. The method comprises the steps of detecting at least a part of an output optical signal from the QPSK modulator, extracting of a particular portion of the output signal in frequency domain, and processing the signal in frequency domain to optimize the transmission of an optical link. The system and method of optical communications in fiber or free space are disclosed that implement the quadrature data modulator with automatic feedback control.

Abstract translation: 公开了用于在相干光通信中生成光四级相移键控信号的集成光学正交调制器的自动反馈控制的方法和系统。 该方法包括以下步骤：检测来自QPSK调制器的输出光信号的至少一部分，在频域中提取输出信号的特定部分，以及处理频域中的信号以优化光链路的传输。 公开了光纤或自由空间中的光通信的系统和方法，其实现具有自动反馈控制的正交数据调制器。

公开(公告)号：US08041224B2

公开(公告)日：2011-10-18

申请号：US12137352

申请日：2008-06-11

Applicant: Isaac Shpantzer ,  Jacob Khurgin

Inventor： Isaac Shpantzer ,  Jacob Khurgin

IPC: H04B10/00

CPC classification number: H01L27/1446 ,  H01L31/0232 ,  H01L31/0304 ,  H04B10/1121 ,  H04B10/118

Abstract: A non-line of sight (NLOS) communications system and method are provided that implement orthogonal frequency, division multiplexing. A data generator produces a digital data stream, which is converted into M parallel frequency sub-carrier digital data streams (where M is an integer), each sub-carrier is encoded with data and an Inverse Fast Fourier Transform operation is applied, and an output signal is converted to an analog signal, which is imposed onto an optical beam generated by a light source. The beam is transmitted skywards at an elevation angle above the horizon in at least one direction. The beam is scattered due to Mie and Raleigh effects, forming a scattered waveform. At least a part of the scattered waveform is received by a receiver outputting an electrical signal, which enters a DSP unit. The DSP unit digitizes the electrical signal, performs Fourier transformation and recovers data from M sub-carrier signals.

Abstract translation: 提供了一种实现正交频分复用的非视线（NLOS）通信系统和方法。 数据生成器生成数字数据流，将其转换为M个并行频率副载波数字数据流（其中M为整数），每个子载波用数据编码，并应用快速傅里叶变换操作， 输出信号被转换成模拟信号，该模拟信号被施加到由光源产生的光束上。 光束在至少一个方向上以水平线上方的仰角向天空传播。 由于米和罗利效应，光束散射，形成散射波形。 散射波形的至少一部分由输入进入DSP单元的电信号的接收器接收。 DSP单元对电信号进行数字化，执行傅立叶变换，并从M个副载波信号中恢复数据。

公开(公告)号：US07995925B2

公开(公告)日：2011-08-09

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: G02B6/26 ,  H04B10/06 ,  H04B10/00

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。

公开(公告)号：US07974543B2

公开(公告)日：2011-07-05

申请号：US12331164

申请日：2008-12-09

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

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

IPC: G02B6/26 ,  H04B10/06

CPC classification number: H04B10/61 ,  H04B10/1121 ,  H04B10/50 ,  H04J14/005 ,  H04J14/02

Abstract: A device for phase distortion compensation across an optical beam is provided. The device is a part of an optical receiver, which can be used in free space optical communications, remote sensing, optical imaging and others. 2M inputs of the combiner interfere with each other via a system of tunable coupled waveguides. The phases in interleaved waveguides of the combiner are adjusted to maximize the resulting output signal. The combiner may be used for coherent communication in combination with a balanced 90° hybrid. Integrated solutions for the proposed device are provided.

Abstract translation: 提供了一种用于跨光束的相位失真补偿的装置。 该设备是光接收机的一部分，可用于自由空间光通信，遥感，光学成像等。 组合器的2M输入通过可调谐耦合波导的系统相互干扰。 调整组合器的交错波导中的相位以最大化所得到的输出信号。 组合器可以与平衡的90°混合组合使用，用于相干通信。 提供了所提出的器件的集成解决方案。

公开(公告)号：US20100290734A1

公开(公告)日：2010-11-18

申请号：US12629579

申请日：2009-12-02

Applicant: Arkady Kaplan ,  Isaac Shpantzer

Inventor： Arkady Kaplan ,  Isaac Shpantzer

IPC: G01L1/24

CPC classification number: G08B13/186 ,  G01M5/0091 ,  G01M11/083 ,  G02B6/4246

Abstract: A system and method for a structure monitoring and locating a disturbance event is disclosed. The system includes a compact transceiver chip sending optical signals in three optical fibers that encompass the monitored structure appropriately. The system contains a sequence of loops, wherein the first and the second fiber forming the loop clockwise, while the third fiber is winded along the same loop counterclockwise. A set of two detectors registers the returning signals, and a time delay between those signals is calculated, which is indicative of the disturbance event location. The event location is determined with different sensitivity in different parts of the monitored structure depending on the density of fibers in these parts.

Abstract translation: 公开了一种用于监测和定位扰动事件的结构的系统和方法。 该系统包括紧凑的收发器芯片，其在三根光纤中发送光信号，以适当地包含所监视的结构。 该系统包含一系列循环，其中第一和第二纤维顺时针形成环，同时第三纤维逆时针沿相同的环卷绕。 一组两个检测器记录返回信号，并计算这些信号之间的时间延迟，这表示干扰事件位置。 根据这些部分中的纤维密度，在被监测结构的不同部分中以不同的灵敏度确定事件位置。

公开(公告)号：US07801395B2

公开(公告)日：2010-09-21

申请号：US11938655

申请日：2007-11-12

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

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

IPC: G02B6/12 ,  H04J14/00

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。

公开(公告)号：US20090220246A1

公开(公告)日：2009-09-03

申请号：US12331164

申请日：2008-12-09

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

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

IPC: H04B10/12 ,  H04B10/06 ,  G02B6/26 ,  G02F1/01

CPC classification number: H04B10/61 ,  H04B10/1121 ,  H04B10/50 ,  H04J14/005 ,  H04J14/02

Abstract: A device for phase distortion compensation across an optical beam is provided. The device is a part of an optical receiver, which can be used in free space optical communications, remote sensing, optical imaging and others. 2M inputs of the combiner interfere with each other via a system of tunable coupled waveguides. The phases in interleaved waveguides of the combiner are adjusted to maximize the resulting output signal. The combiner may be used for coherent communication in combination with a balanced 90° hybrid. Integrated solutions for the proposed device are provided.

Abstract translation: 提供了一种用于跨光束的相位失真补偿的装置。 该设备是光接收机的一部分，可用于自由空间光通信，遥感，光学成像等。 组合器的2M输入通过可调谐耦合波导的系统相互干扰。 调整组合器的交错波导中的相位以最大化所得到的输出信号。 组合器可以与平衡的90°混合组合使用，用于相干通信。 提供了所提出的器件的集成解决方案。

公开(公告)号：US07512338B2

公开(公告)日：2009-03-31

申请号：US11503456

申请日：2006-08-11

Applicant: Isaac Shpantzer ,  Israel Smilanski ,  Jacob B. Khurgin ,  Vladimir Grigoryan ,  Pak Shing Cho ,  Nadejda Reingand ,  Guy Levy-Yurista ,  Guoliang Li

Inventor： Isaac Shpantzer ,  Israel Smilanski ,  Jacob B. Khurgin ,  Vladimir Grigoryan ,  Pak Shing Cho ,  Nadejda Reingand ,  Guy Levy-Yurista ,  Guoliang Li

IPC: H04B10/08 ,  H04B10/00

CPC classification number: H04B10/5053 ,  H04B10/25137 ,  H04B10/2543 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5057 ,  H04B10/50572 ,  H04B10/50577 ,  H04B10/508 ,  H04J14/02 ,  H04J14/08

Abstract: One embodiment of the invention relates to producing optical pulses for use on a transmission link. A light source is configured to produce an optical signal. A pulse generator is coupled to the light source. The pulse generator is configured to receive, for a first channel, the optical signal and a clock signal. The pulse generator is also configured to modify the optical signal based on the clock signal to produce an optical pulse having a predetermined pulse shape. The clock signal is associated with the predetermined pulse shape. The predetermined pulse shape being based on a transmission characteristic of the transmission link.

Abstract translation: 本发明的一个实施例涉及产生用于传输链路的光脉冲。 光源被配置为产生光信号。 脉冲发生器耦合到光源。 脉冲发生器被配置为针对第一通道接收光信号和时钟信号。 脉冲发生器还被配置为基于时钟信号修改光信号以产生具有预定脉冲形状的光脉冲。 时钟信号与预定的脉冲形状相关联。 预定脉冲形状基于传输链路的传输特性。

公开(公告)号：US07502118B2

公开(公告)日：2009-03-10

申请号：US11677185

申请日：2007-02-21

Applicant: Isaac Shpantzer

Inventor： Isaac Shpantzer

IPC: G01B9/02 ,  G01J3/45

CPC classification number: G01N21/171 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0224 ,  G01J3/45 ,  G01J9/04 ,  G01N2021/1793 ,  G02B26/06

Abstract: 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. An adaptive optics system at least partially compensates the light beam degradation caused by atmospheric turbulence. A focusing system is used to bring together the light passed through the chemical; the focusing system includes a multimode fiber for the light collection, 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.

Abstract translation: 公开了一种在远程位置提供关于化学品的信息的光热干涉光谱系统。 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。 自适应光学系统至少部分补偿由大气湍流引起的光束退化。 聚焦系统用于将通过化学品的光汇集在一起​​; 聚焦系统包括用于光收集的多模光纤。检测器系统提供关于相对于第二光束的第三光束相变的信息，其指示化学品的吸收光谱和浓度中的至少一个。

公开(公告)号：US07426035B2

公开(公告)日：2008-09-16

申请号：US11561966

申请日：2006-11-21

Applicant: Isaac Shpantzer

Inventor： Isaac Shpantzer

IPC: G01B9/02 ,  G01J3/45

CPC classification number: G01N21/171 ,  G01N21/3504 ,  G01N21/359 ,  G01N21/39 ,  G01N2021/1793

Abstract: A system and method is proposed for chemicals detection such as explosives and others, which are based on sensing of trace gases associated with the chemical. This sensing includes detection of spectrum and relative concentration of the trace gases followed by the chemical identification based on these data. The sensing is based on photothermal interferometry method modified by implementation of coherent optical detection. This modification essentially improves the device performance by increasing its sensitivity and selectivity. Improved characteristics of the device allow remote sensing of the interrogated chemicals at a distance up to 1000 meters, which is crucial for explosives detection. The coherent optical detection is performed by a coherent receiver based on 90-degrees optical hybrid.

Abstract translation: 提出了一种用于化学物质检测的系统和方法，例如爆炸物等，其基于与化学品相关的痕量气体的检测。 该检测包括基于这些数据检测光谱和痕量气体的相对浓度，然后进行化学鉴定。 该感测是基于相干光学检测实现修改的光热干涉法。 该修改通过增加其灵敏度和选择性来实质地改善器件性能。 改进的设备特性允许远程检测被询问的化学品，距离高达1000米，这对于爆炸物检测至关重要。 相干光学检测由基于90度光学混合的相干接收机执行。