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    Radio frequency (RF) signal receiver using optical processing and associated methods
    4.
    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
    5.
    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
    6.
    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
    7.
    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。

    Optical digital-to-analog converter
    8.
    发明授权
    Optical digital-to-analog converter 有权
    光学数模转换器

    公开(公告)号：US07061414B2

    公开(公告)日：2006-06-13

    申请号：US10771089

    申请日：2004-02-03

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

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

    IPC分类号： H03M1/66

    CPC分类号： G02F7/00 ,  G02F2201/18

    摘要： An optical digital-to-analog conversion is realized by employing either a continuous wave or pulsed laser optical signal. The laser optical signal is split into a plurality of mutually coherent optical beams, which are phase shift modulated by bits of a digital data sequence to be converted to an analog signal. The phase shift modulated optical beams are recombined to realize the desired digital-to-analog converted optical signal.

    摘要翻译： 通过采用连续波或脉冲激光光信号实现光数字到模拟转换。 激光光信号被分割成多个相互相干的光束，它们被数字数据序列的位进行相移调制以转换成模拟信号。 相移调制光束被重组以实现期望的数模转换光信号。

    Quadrature amplitude modulation of optical carriers
    10.
    发明授权
    Quadrature amplitude modulation of optical carriers 有权
    光载波的正交幅度调制

    公开(公告)号：US07873284B2

    公开(公告)日：2011-01-18

    申请号：US10830331

    申请日：2004-04-22

    申请人： Young-Kai Chen ,  Andreas Leven

    发明人： Young-Kai Chen ,  Andreas Leven

    IPC分类号： H04B10/12

    CPC分类号： H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/541

    摘要： An apparatus includes an optical splitter, an optical combiner, first and second optical paths, and a digital signal generator. The optical splitter has an input port and first and second output ports. The optical combiner has first and second input ports and an output port. The first optical path couples the first output port of the splitter to the first input port of the combiner. The second optical path couples the second output port of the splitter to the second input port of the combiner. Each optical path includes an electro-optical phase shifter, and one of the optical paths includes an electro-optical attenuator. The digital signal generator is configured to apply binary-valued voltage signals to control inputs of the phase shifters and the attenuator.

    摘要翻译： 一种装置包括光分路器，光组合器，第一和第二光路以及数字信号发生器。 光分路器具有输入端口和第一和第二输出端口。 光合并器具有第一和第二输入端口和输出端口。 第一光路将分离器的第一输出端口耦合到组合器的第一输入端口。 第二光路将分离器的第二输出端口耦合到组合器的第二输入端口。 每个光路包括电光移相器，并且其中一个光路包括电光衰减器。 数字信号发生器被配置为应用二进制值电压信号来控制移相器和衰减器的输入。