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    POWER ADJUSTMENT OF IN-PHASE AND QUADRATURE COMPONENTS AT A COHERENT OPTICAL RECEIVER
    1.
    发明申请
    POWER ADJUSTMENT OF IN-PHASE AND QUADRATURE COMPONENTS AT A COHERENT OPTICAL RECEIVER 有权
    在相邻光接收机上进行相间和相位分量的功率调整

    公开(公告)号：US20130101300A1

    公开(公告)日：2013-04-25

    申请号：US13637481

    申请日：2011-03-24

    申请人： Stefan Weisser ,  Silvio Cucchi ,  Carlo Costantini ,  Noriaki Kaneda ,  Andreas Leven

    发明人： Stefan Weisser ,  Silvio Cucchi ,  Carlo Costantini ,  Noriaki Kaneda ,  Andreas Leven

    IPC分类号： H04B10/06

    CPC分类号： H04B10/616 ,  H03G3/3084 ,  H04B10/60 ,  H04B10/613 ,  H04B10/6931 ,  H04L27/2096 ,  H04L27/3809 ,  H04L27/3818

    摘要： It is disclosed an optical coherent receiver for an optical communication network. The optical coherent receiver is configured to receive a modulated optical signal and to process it for generating an in-phase component and a quadrature component. The optical coherent receiver comprises a power adjuster in turn comprising a multiplying unit and a retroactively connected digital circuit. The multiplying unit is configured to multiply the in-phase and quadrature components by in-phase and quadrature gains, respectively, thereby providing power-adjusted in-phase and quadrature components. The digital circuit is configured to compute: a common gain indicative of a sum of the powers of the power-adjusted in-phase and quadrature components; a differential gain indicative of a difference between the powers of the power-adjusted in-phase and quadrature components; and the in-phase and quadrature gains as a product and a ratio, respectively, between the common gain and the differential gain.

    摘要翻译： 公开了一种用于光通信网络的光学相干接收机。 光学相干接收器被配置为接收经调制的光信号并且处理它以产生同相分量和正交分量。 光学相干接收机包括功率调节器，其依次包括乘法单元和追溯连接的数字电路。 乘法单元被配置为分别将同相和正交分量乘以同相和正交增益，从而提供功率调整的同相和正交分量。 数字电路被配置为计算：表示功率调整的同相和正交分量的功率之和的公共增益; 指示功率调整的同相和正交分量的功率之间的差的差分增益; 以及同相和正交增益作为公共增益和差分增益之间的乘积和比率。

    OPTICAL RECEIVER HAVING A SIGNAL-EQUALIZATION CAPABILITY
    4.
    发明申请
    OPTICAL RECEIVER HAVING A SIGNAL-EQUALIZATION CAPABILITY 有权
    具有信号均衡能力的光接收机

    公开(公告)号：US20140086594A1

    公开(公告)日：2014-03-27

    申请号：US13628412

    申请日：2012-09-27

    申请人： Chongjin Xie ,  Peter J. Winzer ,  Stefan Weisser ,  Andreas Leven

    发明人： Chongjin Xie ,  Peter J. Winzer ,  Stefan Weisser ,  Andreas Leven

    IPC分类号： H04B10/06

    CPC分类号： H04B10/6161 ,  H04B10/6162 ,  H04B10/6165

    摘要： In one embodiment, an optical receiver has a bulk dispersion compensator and a butterfly equalizer serially connected to one another to perform dispersion-compensation processing and electronic polarization de-multiplexing. The bulk dispersion compensator has a relatively large dispersion-compensation capacity, but is relatively slow and operates in a quasi-static configuration. The butterfly equalizer has a relatively small dispersion-compensation capacity, but can be dynamically reconfigured on a relatively fast time scale to track the changing conditions in the optical-transport link. The optical receiver has a feedback path that enables the configuration of the bulk dispersion compensator to be changed based on the configuration of the butterfly equalizer in a manner that advantageously enables the receiver to tolerate larger amounts of chromatic dispersion and/or polarization-mode dispersion than without the use of the feedback path.

    摘要翻译： 在一个实施例中，光接收器具有彼此串联连接的体色散补偿器和蝶式均衡器，以执行色散补偿处理和电子偏振解复用。 体积色散补偿器具有相对较大的色散补偿能力，但是相对较慢并且在准静态配置中操作。 蝶形均衡器具有相对较小的色散补偿能力，但是可以在相对较快的时间尺度上动态地重新配置以跟踪光传输链路中的变化条件。 光接收机具有反馈路径，其能够基于蝴蝶均衡器的配置来改变批量色散补偿器的配置，其有利地使得接收器容忍更大量的色散和/或偏振模色散比 而不使用反馈路径。

    Radio frequency (RF) signal receiver using optical processing and associated methods
    6.
    发明授权
    Radio frequency (RF) signal receiver using optical processing and associated methods 有权
    射频（RF）信号接收机采用光学处理及相关方法

    公开(公告)号：US08116638B2

    公开(公告)日：2012-02-14

    申请号：US11755478

    申请日：2007-05-30

    申请人： Bruce Fitzgerald ,  Richard DeSalvo ,  Young Kai Chen ,  Andreas Leven ,  Peter J. Delfyett

    发明人： Bruce Fitzgerald ,  Richard DeSalvo ,  Young Kai Chen ,  Andreas Leven ,  Peter J. Delfyett

    IPC分类号： H04B10/00 ,  H04B10/04 ,  H04B10/08 ,  G02B5/18

    CPC分类号： H04B10/1125 ,  H01Q3/2676 ,  H04B10/25752

    摘要： A signal receiver, such as an RF-matched filter receiver, includes an optical source (e.g. a mode-locked laser) providing an optical signal, and a first optical modulator to modulate the optical signal with a received RF signal and provide a modulated optical signal. A second optical modulator modulates the modulated optical signal with a reference signal and provides a twice modulated optical signal. The modulators may be Mach-Zehnder Modulators (MZM) and/or Indium Phosphide (InP) modulators. An optical detector receives the twice modulated optical signal and provides a detected signal, and a processing unit receives the detected signal and extracts or measures cross-correlation between the received RF signal and the reference signal.

    摘要翻译： 诸如RF匹配滤波器接收器的信号接收器包括提供光信号的光源（例如锁模激光器）和用接收的RF信号调制光信号的第一光调制器，并提供调制光 信号。 第二光调制器用参考信号调制调制的光信号，并提供两次调制的光信号。 调制器可以是马赫 - 曾德调制器（MZM）和/或磷化铟（InP）调制器。 光检测器接收两次调制的光信号并提供检测信号，处理单元接收检测信号并提取或测量接收的RF信号与参考信号之间的互相关。

    Programmable optical array
    8.
    发明授权
    Programmable optical array 有权
    可编程光学阵列

    公开(公告)号：US07548668B2

    公开(公告)日：2009-06-16

    申请号：US11944183

    申请日：2007-11-21

    申请人： Young-Kai Chen ,  Andreas Leven ,  Mahmoud Rasras ,  Kun-Yii Tu

    发明人： Young-Kai Chen ,  Andreas Leven ,  Mahmoud Rasras ,  Kun-Yii Tu

    IPC分类号： G02B6/12 ,  G02B6/35

    CPC分类号： G02B6/12007 ,  G02B6/3546 ,  G02F1/025 ,  G02F1/3133 ,  G02F2203/15

    摘要： An apparatus having a topology that allows building complicated optical programmable arrays useful for manipulating the phase and/or amplitude of an optical signal. Sophisticated filtering and other optical signal processing functionality can be programmed into the array after a chip containing the array has been fabricated. This programming capability is analogous to that of electronic field programmable gate arrays (FPGA's). Apparatus described herein will provide a powerful tool for processing optical signals or very broadband electrical signals.

    摘要翻译： 具有拓扑结构的装置，其允许构建用于操纵光信号的相位和/或幅度的复杂的光学可编程阵列。 在制造了包含阵列的芯片之后，可以将复杂的滤波和其他光信号处理功能编程到阵列中。 这种编程能力类似于电子现场可编程门阵列（FPGA）的编程能力。 本文描述的装置将提供用于处理光信号或非常宽带电信号的强大工具。

    NRZ-to-RZ conversion for communication systems
    9.
    发明授权
    NRZ-to-RZ conversion for communication systems 有权
    通信系统的NRZ到RZ转换

    公开(公告)号：US07155130B2

    公开(公告)日：2006-12-26

    申请号：US10085433

    申请日：2002-02-28

    申请人： Yves L. Baeyens ,  Young-Kai Chen ,  Wei-Chiao W. Fang ,  Andreas Leven ,  Eugene F. Rice

    发明人： Yves L. Baeyens ,  Young-Kai Chen ,  Wei-Chiao W. Fang ,  Andreas Leven ,  Eugene F. Rice

    IPC分类号： H04B10/04 ,  H04B10/12

    CPC分类号： H04B10/508 ,  H04B10/505

    摘要： A driver, e.g., for use with electro-optic (E/O) modulators. The driver is configured to generate a driving signal based on an electronic NRZ input data signal and an input clock signal. The driver converts the NRZ input data signal to an RZ format and produces an amplified RZ signal that can be applied to an E/O modulator. The amplification gain of the driver is adjustable to enable interfacing with different modulators. In one embodiment of the invention, the driving signal is generated based on a comparison between the NRZ input data signal and an offset clock signal generated from the input clock signal. The width of pulses in the driving signal, e.g., corresponding to logical “ones,” may be tuned by, e.g., changing the DC offset of the clock signal. The driver may be implemented as an ASIC configured to operate at the data rate of, e.g., 10 GBit/s.

    摘要翻译： 驱动器，例如用于电光（E / O）调制器。 驱动器被配置为基于电子NRZ输入数据信号和输入时钟信号产生驱动信号。 驱动器将NRZ输入数据信号转换为RZ格式，并产生可应用于E / O调制器的放大RZ信号。 驱动器的放大增益可调，以实现与不同调制器的连接。 在本发明的一个实施例中，基于NRZ输入数据信号与从输入时钟信号产生的偏移时钟信号之间的比较产生驱动信号。 可以通过例如改变时钟信号的DC偏移来调整驱动信号中的脉冲宽度，例如对应于逻辑“1”。 驱动器可以被实现为被配置为以例如10GBit / s的数据速率操作的ASIC。

    Optical beamforming transmitter
    10.
    发明授权
    Optical beamforming transmitter 有权
    光束成形发射机

    公开(公告)号：US07929864B2

    公开(公告)日：2011-04-19

    申请号：US11366145

    申请日：2006-03-02

    申请人： Young-Kai Chen ,  Andreas Leven

    发明人： Young-Kai Chen ,  Andreas Leven

    IPC分类号： H04B10/00 ,  H04B10/04

    CPC分类号： H01Q3/2676

    摘要： The present invention provides an optical beamforming RF transmitter. In one embodiment, the optical beamforming RF transmitter includes an optical WDM splitter having an input and a plurality of outputs. The optical beamforming RF transmitter also includes an array of antennas, where each antenna has an optical input configured to drive the corresponding antenna, and an array of optical modulators, such that each modulator has an output connected to a corresponding one of the antennas and an input connected to one of the outputs of the optical WDM splitter. The optical beamforming RF transmitter further includes a mode-locked laser having an output optically coupled to the input of the optical WDM splitter.

    摘要翻译： 本发明提供一种光束成形射频发射机。 在一个实施例中，光束成形RF发射器包括具有输入和多个输出的光学WDM分离器。 光束成形RF发射器还包括天线阵列，其中每个天线具有配置成驱动相应天线的光学输入和光学调制器阵列，使得每个调制器具有连接到相应的一个天线的输出和 输入连接到光学WDM分离器的一个输出。 光束成形RF发射器还包括具有光学耦合到光学WDM分离器的输入的输出的锁模激光器。