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    Transparent linear optical transmission of passband and baseband electrical signals
    11.
    发明授权
    Transparent linear optical transmission of passband and baseband electrical signals 有权

    公开(公告)号：US10951315B2

    公开(公告)日：2021-03-16

    申请号：US16326227

    申请日：2017-08-28

    Applicant: Technion Research and Development Foundation LTD.

    Inventor： Moshe Nazarathy ,  Amos Agmon ,  Alexander Tolmachev

    IPC: H04B10/532 ,  H04B10/2575 ,  G02B6/293 ,  G02B6/28 ,  G02B6/42

    Abstract: An electro-optic system, the electro-optic system that may include an input port that is configured to receive a bandpass signal that conveys information; wherein the bandpass signal is a radio frequency (RF) signal; an optical carrier source that is configured to generate an optical carrier signal having an optical carrier frequency; at least one electrical bias circuit that is configured to generate at least one electrical bias signal; an electro-optic modulation circuit that is linear at the optical field; a manipulator that is configured to (a) receive the at least one electrical bias signal and the bandpass signal, (b) generate, based on the at least one electrical bias signal and the bandpass signal, at least one modulating signal; wherein the electro-optic modulation circuit is configured to modulate the optical carrier by the at least one modulating signal to provide an output optical signal that comprises at least one optical pilot tone and at least one optical sideband that conveys the information.

    Optical network unit, optical access network and a method for exchanging information
    14.
    发明授权
    Optical network unit, optical access network and a method for exchanging information 有权
    光网络单元，光接入网和交换信息的方法

    公开(公告)号：US09112640B2

    公开(公告)日：2015-08-18

    申请号：US14207676

    申请日：2014-03-13

    Applicant: Technion Research and Development Foundation LTD.

    Inventor： Moshe Nazarathy ,  Amos Agmon

    IPC: H04J14/00 ,  H04J14/06 ,  H04J14/02

    CPC classification number: H04J14/06 ,  H04J14/0282

    Abstract: A method for exchanging information with an Optical Network Unit (ONU), the method comprising: receiving, by the ONU, downstream signals that comprise a pilot signal and downstream information signals; wherein the downstream information signals embed first polarization modulated information and second polarization modulated information; wherein the pilot signal is received at a pilot frequency slot and the downstream information signals are received at a downstream information frequency slot that differs from the pilot frequency slot; splitting the downstream signals to first, second, third and fourth sets of signals; wherein the splitting comprises performing a polarization based splitting to provide first and second intermediate sets of signals; wherein the first and second sets of signals originate from the first intermediate set of signals and the third and fourth sets of signals originate from the second intermediate set of signals; generating a fifth set of signals by providing the second and fourth sets of signals to a polarization changing circuit, wherein a polarization direction of the fifth set of signals differs from a polarization direction of the first and second intermediate sets of signals; generating first, second and third sets of detection signals, in response to the first, third and fifth sets of signals; and reconstructing the first polarization modulated information and the second polarization modulated information in response to the first, second and third sets of detection signals.

    Abstract translation: 一种用于与光网络单元（ONU）交换信息的方法，所述方法包括：由ONU接收包括导频信号和下行信息信号的下行信号; 其中下游信息信号嵌入第一偏振调制信息和第二偏振调制信息; 其中在导频时隙处接收导频信号，并且在与导频时隙不同的下行信息频率时隙处接收下行信息信号; 将下行信号分解为第一，第二，第三和第四组信号; 其中所述分割包括执行基于偏振的分割以提供第一和第二中间信号集合; 其中所述第一和第二组信号源自所述第一中间信号集合，并且所述第三和第四组信号源自所述第二中间信号集合; 通过将第二和第四组信号提供给偏振改变电路来产生第五组信号，其中第五组信号的偏振方向与第一和第二中间信号组的偏振方向不同; 响应于所述第一，第三和第五组信号产生第一，第二和第三组检测信号; 以及响应于所述第一，第二和第三组检测信号重构所述第一偏振调制信息和所述第二偏振调制信息。

    Polar multi-symbol delay detector for carrier phase and frequency recovery for coherent transmission
    15.
    发明授权
    Polar multi-symbol delay detector for carrier phase and frequency recovery for coherent transmission 有权
    用于相干传输的载波相位和频率恢复的极坐标多符号延迟检测器

    公开(公告)号：US09059889B2

    公开(公告)日：2015-06-16

    申请号：US14203593

    申请日：2014-03-11

    Applicant: Technion Research and Development Foundation LTD.

    Inventor： Moshe Nazarathy ,  Igor Tselniker ,  Alex Tolmachev

    IPC: H04L27/00 ,  H04L27/38 ,  H04L27/227 ,  H04L27/20 ,  H04B10/61 ,  H04B10/67

    CPC classification number: H04L27/3872 ,  H04B10/61 ,  H04B10/611 ,  H04B10/6165 ,  H04B10/677 ,  H04L27/2071 ,  H04L27/227 ,  H04L27/38 ,  H04L27/3818 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2203/00

    Abstract: A method for calculating a reconstructed phase that includes: Calculating a current phase signal and current amplitude signal that represent a phase and amplitude of a current input symbol, respectively. Generating, in response to the current phase signal and an estimate of a phase of a last input symbol that preceded the current input symbol, multiple partial references, some of which are responsive to (i) phase signals representative of phases of a plurality of input symbols that preceded the current input symbol, and (ii) estimates of the phase of the plurality of input symbols. Calculating unwrapped partial references. Estimating a constant carrier frequency offset (CFO) phase rotation in response to the unwrapped partial references. Calculating a reconstructed phase of the current input symbol in response to, at least, the estimate of the constant CFO phase rotation and to the unwrapped partial references.

    Abstract translation: 一种用于计算重构相位的方法，包括：分别计算表示当前输入符号的相位和幅度的当前相位信号和电流幅度信号。 响应于当前相位信号和对当前输入符号之前的最后输入符号的相位的估计，产生多个部分参考，其中一些部分参考响应于（i）代表多个输入的相位的相位信号 在当前输入符号之前的符号，以及（ii）多个输入符号的相位的估计。 计算未打包的部分引用。 响应于展开的部分参考，估计恒定的载波频率偏移（CFO）相位旋转。 至少响应于常数CFO相位旋转和未展开的部分参考的估计，计算当前输入符号的重构相位。

    POLAR MULTI-SYMBOL DELAY DETECTOR FOR CARRIER PHASE AND FREQUENCY RECOVERY FOR COHERENT TRANSMISSION
    16.
    发明申请
    POLAR MULTI-SYMBOL DELAY DETECTOR FOR CARRIER PHASE AND FREQUENCY RECOVERY FOR COHERENT TRANSMISSION 有权
    用于传输相位和频率恢复的极性多符号延迟检测器进行相互传输

    公开(公告)号：US20140254723A1

    公开(公告)日：2014-09-11

    申请号：US14203593

    申请日：2014-03-11

    Applicant: Technion Research and Development Foundation LTD.

    Inventor： Moshe Nazarathy ,  Igor Tselniker ,  Alex Tolmachev

    IPC: H04L27/38

    CPC classification number: H04L27/3872 ,  H04B10/61 ,  H04B10/611 ,  H04B10/6165 ,  H04B10/677 ,  H04L27/2071 ,  H04L27/227 ,  H04L27/38 ,  H04L27/3818 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2203/00

    Abstract: A method for calculating a reconstructed phase that includes: Calculating a current phase signal and current amplitude signal that represent a phase and amplitude of a current input symbol, respectively. Generating, in response to the current phase signal and an estimate of a phase of a last input symbol that preceded the current input symbol, multiple partial references, some of which are responsive to (i) phase signals representative of phases of a plurality of input symbols that preceded the current input symbol, and (ii) estimates of the phase of the plurality of input symbols. Calculating unwrapped partial references. Estimating a constant carrier frequency offset (CFO) phase rotation in response to the unwrapped partial references. Calculating a reconstructed phase of the current input symbol in response to, at least, the estimate of the constant CFO phase rotation and to the unwrapped partial references.

    Abstract translation: 一种用于计算重构相位的方法，包括：分别计算表示当前输入符号的相位和幅度的当前相位信号和电流幅度信号。 响应于当前相位信号和对当前输入符号之前的最后输入符号的相位的估计，产生多个部分参考，其中一些部分参考响应于（i）代表多个输入的相位的相位信号 在当前输入符号之前的符号，以及（ii）多个输入符号的相位的估计。 计算未打包的部分引用。 响应于展开的部分参考，估计恒定的载波频率偏移（CFO）相位旋转。 至少响应于常数CFO相位旋转和未展开的部分参考的估计，计算当前输入符号的重构相位。

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