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。

公开(公告)号：US20070140705A1

公开(公告)日：2007-06-21

申请号：US11616417

申请日：2006-12-27

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

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

IPC: H04B10/04

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：US20070102648A1

公开(公告)日：2007-05-10

申请号：US11626920

申请日：2007-01-25

Applicant: Isaac Shpantzer ,  Yaakov Achiam ,  Nadejda Reingand

Inventor： Isaac Shpantzer ,  Yaakov Achiam ,  Nadejda Reingand

IPC: G01T1/00

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。

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。

公开(公告)号：US08532498B2

公开(公告)日：2013-09-10

申请号：US13070719

申请日：2011-03-24

Applicant: Isaac Shpantzer

Inventor： Isaac Shpantzer

IPC: H04B10/00

CPC classification number: H04B10/60 ,  G02F2001/212 ,  H04B10/11 ,  H04B10/548 ,  H04B10/614 ,  H04B10/63 ,  H04B10/64 ,  H04J14/02 ,  H04J14/0227 ,  H04J14/0257 ,  H04J14/0298 ,  H04J14/06 ,  H04L9/0858 ,  H04L27/0008 ,  H04L27/2604 ,  H04L27/2637 ,  H04L27/2697

Abstract: The invention provides a system and method for secure communication that involve encoding and transmitting an optical orthogonal frequency division multiplexed (OFDM) signal. Each subcarrier of an optical carrier in OFDM transmission is modulated with data individually, and a variety of data format are used, such as QPSK, OOK, QAM, etc. The data format of each subcarrier may change in time according to a predetermined pattern. An optical receiver uncovers the data transmitted via an optical link. It is based on a coherent optical receiver and a digital signal processing (DSP) unit. A key to the data mapping and change is transmitted via the same optical link or by a separate channel. In one embodiment, the key is transmitted using quantum encryption technique. Besides subcarrier modulation encoding, the system may provide additional layers of security: optical carrier frequency hopping and polarization scrambling.

Abstract translation: 本发明提供了一种用于安全通信的系统和方法，其涉及编码和发送光学正交频分复用（OFDM）信号。 OFDM传输中的光载波的每个子载波被单独调制，并且使用诸如QPSK，OOK，QAM等的各种数据格式。每个子载波的数据格式可以根据预定模式在时间上改变。 光接收器揭示通过光链路传输的数据。 它基于相干光接收机和数字信号处理（DSP）单元。 通过相同的光链路或单独的信道传输数据映射和改变的关键。 在一个实施例中，使用量子加密技术传输密钥。 除了副载波调制编码之外，系统可以提供额外的安全层：光载波跳频和偏振加扰。

公开(公告)号：US08143575B2

公开(公告)日：2012-03-27

申请号：US12618303

申请日：2009-11-13

Applicant: Jacques Goldberg ,  Isaac Shpantzer ,  Yaakov Achiam ,  Nadya Reingand

Inventor： Jacques Goldberg ,  Isaac Shpantzer ,  Yaakov Achiam ,  Nadya Reingand

IPC: G01T1/00

CPC classification number: G01T1/2935

Abstract: A method and system for high Z substance revealing using muon detection technique is presented. Natural muon coordinate and incidence angle are measured above and below the interrogated volume. The muon deviations after passing through the interrogated volume are compared with the reference deviations obtained for the same volume in absence of high Z material. A correlation between the actual data and reference data is calculated using Kolmogorov-Smirnov test, though other approaches may apply. The correlation is used for the decision making on the presence of a nuclear substance inside the volume.

Abstract translation: 提出了一种使用muon检测技术显示高Z物质的方法和系统。 在询问的体积之上和之下测量自然的μon坐标和入射角。 将通过询问体积后的μon偏差与不存在高Z材料的相同体积获得的参考偏差进行比较。 使用Kolmogorov-Smirnov测试来计算实际数据和参考数据之间的相关性，尽管可能采用其他方法。 相关性用于决定在体内存在核物质。

公开(公告)号：US08064767B2

公开(公告)日：2011-11-22

申请号：US12045765

申请日：2008-03-11

Applicant: Isaac Shpantzer ,  Alexander Genusov ,  Yehouda Meiman ,  Jacob Khurgin

Inventor： Isaac Shpantzer ,  Alexander Genusov ,  Yehouda Meiman ,  Jacob Khurgin

IPC: H04J14/06

CPC classification number: H04B10/61 ,  G02B6/126 ,  G02B2006/12147 ,  H04B10/2575 ,  H04B10/611 ,  H04B10/614 ,  H04J14/06

Abstract: The present invention provides a system and method of optical communications that utilize coherent detection technique and optical orthogonal frequency division multiplexing for phase encoded data transmission. In particular the invention addresses a device and method for digital polarization compensation of optical signals with up to 100 Gb/s transmission rate received via an optical link. The polarization compensation operates in two modes: acquisition mode and tracking mode. The polarization recovery is performed at the receiver side using the received digital signal conversion into frequency domain and separate reconstruction of the polarization state in each spectral component.

Abstract translation: 本发明提供一种利用相干检测技术和光学正交频分复用进行相位编码数据传输的光通信系统和方法。 特别地，本发明涉及用于经由光学链路接收的高达100Gb / s传输速率的光信号的数字偏振补偿的装置和方法。 偏振补偿工作在两种模式：采集模式和跟踪模式。 使用接收到的数字信号转换为频域并在每个频谱分量中分离重建偏振状态，在接收机侧执行偏振恢复。

公开(公告)号：US20100310256A1

公开(公告)日：2010-12-09

申请号：US12856852

申请日：2010-08-16

Applicant: Isaac Shpantzer ,  Yehouda Meiman

Inventor： Isaac Shpantzer ,  Yehouda Meiman

IPC: H04J14/00

CPC classification number: H04B10/614 ,  H04B10/61 ,  H04B10/611 ,  H04J14/02 ,  H04J14/0298 ,  H04J14/06 ,  H04L27/18 ,  H04L27/223 ,  H04L27/2626 ,  H04L27/2697

Abstract: The present invention discloses a receiver for optical system, which provides improved performance due to implementation of multiple parallel analog-to-digital converters. Such configuration allows reducing the data speed processing thus improving bit-error-rate. Each channel of the WDM communications system consists of a set of orthogonal spectral bands. These bands are modulated via orthogonal frequency division multiplexing (OFDM) technique using M-PSK modulation format. At the receiver side, the incoming optical beam is split into a set of parallel branches. Each branch is mixed with a local oscillator beam having a spectrum within one sub-band of the WDM channel. In the preferred embodiment these beams are mixed in 90-degrees optical hybrid, which is followed by a set of balanced photodetectors. The baseband of each sub-band signal is converted into a digital signal using ADC. This allows the implementation of a series of lower-speed ADCs working in parallel instead of one high-speed ADC for the data recovery from the incoming optical signal.

Abstract translation: 本发明公开了一种用于光学系统的接收机，其由于实现多个并行模数转换器而提供了改进的性能。 这样的配置允许减少数据速度处理，从而提高误码率。 WDM通信系统的每个通道由一组正交频谱带组成。 这些频带通过使用M-PSK调制格式的正交频分复用（OFDM）技术进行调制。 在接收机侧，入射光束被分成一组平行分支。 每个分支与具有在WDM信道的一个子带内的频谱的本地振荡器波束混合。 在优选实施例中，这些光束在90度光学混合中混合，其后是一组平衡光电探测器。 使用ADC将每个子带信号的基带转换成数字信号。 这允许实现一系列并行工作的低速ADC，而不是一个高速ADC，用于从输入光信号进行数据恢复。

公开(公告)号：US07840144B2

公开(公告)日：2010-11-23

申请号：US11867351

申请日：2007-10-04

Applicant: Isaac Shpantzer ,  Sabera Kazi

Inventor： Isaac Shpantzer ,  Sabera Kazi

IPC: H04B10/06

CPC classification number: H04B10/118 ,  H04B10/40 ,  H04B10/61

Abstract: An optical transceiver is provided for optical communications with additive noise compensation. The system and method are disclosed for the additive noise cancellation, which is typically a vibration noise, caused by moving platform, where the transceiver is located. The transceiver comprises an additive noise sensor and a digital signal processing (DSP) unit which implements variable step size technique to adjust the filter weight in the least square estimate of the noise signal. In the preferred embodiment the digital signal processing is applied both at the transmission and the receiving side. The optical device is packed for ground-satellite and inter-satellite communications applications with resistance to high-energy X-rays, gamma rays and cosmic rays. The optical device sustains its operation characteristics under launch load.

Abstract translation: 提供光收发器用于具有附加噪声补偿的光通信。 公开了用于附加噪声消除的系统和方法，其通常是由收发器所在的移动平台引起的振动噪声。 收发器包括一个附加噪声传感器和一个数字信号处理（DSP）单元，它实现可变步长技术，以调整噪声信号的最小二乘估计中的滤波器权重。 在优选实施例中，在传输和接收侧都应用数字信号处理。 该光学装置用于地面卫星和卫星间通信应用，具有耐高能X射线，γ射线和宇宙射线的能力。 光学装置在发射载荷下维持其运行特性。

公开(公告)号：US07693428B2

公开(公告)日：2010-04-06

申请号：US12418060

申请日：2009-04-03

Applicant: Jacob Khurgin ,  Isaac Shpantzer

Inventor： Jacob Khurgin ,  Isaac Shpantzer

IPC: H04B10/04 ,  H04B10/06

CPC classification number: H04J14/02 ,  H04B10/61 ,  H04B10/611 ,  H04B10/613 ,  H04B10/614 ,  H04B10/6163 ,  H04B10/6165 ,  H04B10/63 ,  H04J14/06 ,  H04L27/18 ,  H04L27/2096 ,  H04L27/2697 ,  H04L2027/0018

Abstract: The present invention discloses a transmitter and receiver for optical communications system, which provide compensation of the optical link nonlinearity. M-PSK modulating is used for data embedding in an optical signal in each WDM channel using orthogonal frequency division multiplexing (OFDM) technique. At the receiver side electrical output signals from a coherent optical receiver are processed digitally with the link nonlinearity compensation. It is followed by the signal conversion into frequency domain and information recovery from each subcarrier of the OFDM signal. At the transmitter side an OFDM encoder provides a correction of I and Q components of a M-PSK modulator driving signal to compensate the link nonlinearity prior to sending the optical signal to the receiver.

Abstract translation: 本发明公开了一种用于光通信系统的发射机和接收机，其提供了光链路非线性的补偿。 使用正交频分复用（OFDM）技术，M-PSK调制用于每个WDM信道中的光信号中的数据嵌入。 在接收机侧，来自相干光接收机的电输出信号用链路非线性补偿数字地处理。 随后将信号转换成频域，并从OFDM信号的每个子载波进行信息恢复。 在发射机侧，OFDM编码器提供M-PSK调制器驱动信号的I和Q分量的校正，以在将光信号发送到接收机之前补偿链路非线性。