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。

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。

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。

公开(公告)号：US20070071456A1

公开(公告)日：2007-03-29

申请号：US11236246

申请日：2005-09-27

申请人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

发明人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

IPC分类号： H04B10/06

CPC分类号： H04B10/64 ,  H04B10/61 ,  H04B10/613 ,  H04B10/615

摘要： An optical heterodyne receiver and a method of extracting data from a phase-modulated input optical signal. In one embodiment, the optical heterodyne receiver includes: (1) a photonic quadrature demodulator having first and second optical inputs and first and second electrical outputs and configured to generate at the first and second electrical outputs an in-phase signal and a quadrature-phase signal, respectively, in response to receiving a modulated optical signal at the first optical input and a reference optical oscillator signal at the second optical input, (2) a passive radio frequency single sideband demodulator coupled to the photonic quadrature demodulator and configured to extract at least one sideband of the in-phase signal or the quadrature-phase signal and (3) at least one analog-to-digital converter coupled to the passive radio frequency single sideband demodulator and configured to receive and sample the at least one sideband.

摘要翻译： 光学外差接收器和从相位调制输入光信号中提取数据的方法。 在一个实施例中，光学外差接收器包括：（1）光子正交解调器，其具有第一和第二光学输入以及第一和第二电输出并被配置为在第一和第二电输出处产生同相信号和正交相位 信号，分别响应于在第一光输入处接收调制的光信号和在第二光输入处的参考光信号，（2）耦合到光子正交解调器的被动射频单边带解调器，并且被配置为在 同相信号或正交相位信号的至少一个边带;以及（3）耦合到无源射频单边带解调器并被配置为接收和采样至少一个边带的至少一个模拟 - 数字转换器。

公开(公告)号：US07146109B2

公开(公告)日：2006-12-05

申请号：US10133469

申请日：2002-04-26

申请人： Young-Kai Chen ,  Andreas Leven

发明人： Young-Kai Chen ,  Andreas Leven

IPC分类号： H04B10/04

CPC分类号： H04B10/5055 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053

摘要： An optically modulated signal is generated for use in transporting data by generating a so-called sub-carrier modulated optical signal and, then, vector modulating the sub-carrier modulated optical signal to yield the desired modulated optical signal for transmission. The vector modulation includes a phase component and an amplitude component. In one specific embodiment of the invention, an apparatus for use in generating a modulated optical signal includes a generator to generate a sub-carrier modulated optical signal including an optical carrier and at least one sub-carrier and an analog vector modulator coupled to receive both the sub-carrier modulated optical signal from the generator and a data signal. The analog vector modulator generates an output optical signal by phase modulating and/or amplitude modulating the sub-carrier of the received optical signal in response to the data signal.

摘要翻译： 产生光调制信号，用于通过产生所谓的副载波调制光信号传输数据，然后对子载波调制光信号进行矢量调制以产生所需的调制光信号进行传输。 矢量调制包括相位分量和振幅分量。 在本发明的一个具体实施例中，一种用于生成调制光信号的装置包括：发生器，用于产生包括光载波和至少一个子载波的子载波调制光信号，以及耦合以接收两者的模拟向量调制器 来自发生器的副载波调制光信号和数据信号。 模拟矢量调制器通过响应于数据信号相位调制和/或幅度调制所接收的光信号的子载波来产生输出光信号。

公开(公告)号：US20060034614A1

公开(公告)日：2006-02-16

申请号：US10982137

申请日：2004-11-05

申请人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

发明人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

IPC分类号： H04B10/12

CPC分类号： H04B10/2513 ,  H04B10/2569

摘要： An adaptive optical parallel equalizer architecture is based on a controllable optical FIR filter device to realize an optical FIR (finite-impulse-response) filter including a plurality of coefficient taps in order to have independent control of each optical FIR filter coefficient. A unique adaptive opto-electronic LMS (least mean square) process is utilized to generate an electronic error signal utilized to control the plurality of parallel tap coefficients of the optical parallel equalizer. The electronic error signal is used as the optimization criterion because the electronic signal after photo-detection is needed to achieve any measurable performance in terms of bit error rate (BER). In a specific embodiment, the controllable optical parallel FIR filter is realized by employing an optical vector modulator. The optical vector modulator is realized by splitting a supplied input optical signal into a plurality of parallel similar optical signals, controllably adjusting the phase and/or amplitude of each of the plurality of optical signals and delaying the resulting optical signals in a prescribed manner relative to one another. Then, the “delayed” signals are combined to yield the optical signal comprising the vector modulated input optical signal to be transmitted as an output. In one particular embodiment, both the phase and amplitude is adjusted of each of the plurality of parallel optical signals, and the error control signals for effecting the adjustments are generated in response to the optical FIR filter optical output signal utilizing the unique opto-electronic LMS process.

摘要翻译： 自适应光学并行均衡器架构基于可控光FIR滤波器装置，以实现包括多个系数抽头的光FIR（有限脉冲响应）滤波器，以便对每个光FIR滤波器系数进行独立控制。 使用独特的自适应光电LMS（最小均方）处理来产生用于控制光学并行均衡器的多个并行抽头系数的电子误差信号。 电子误差信号被用作优化标准，因为需要光电检测后的电子信号来实现在误码率（BER）方面的任何可测量的性能。 在具体实施例中，通过采用光矢量调制器来实现可控光并行FIR滤波器。 光矢量调制器通过将提供的输入光信号分成多个平行的相似的光信号来实现，可控制地调节多个光信号中的每一个的信号的相位和/或幅度，并以相对于 另一个。 然后，“延迟”信号被组合以产生包括作为输出发送的矢量调制输入光信号的光信号。 在一个具体实施例中，相位和振幅都被调整为多个并行光信号中的每一个，并且用于进行调整的误差控制信号响应于利用独特光电LMS的光FIR滤波器光输出信号而产生 处理。

公开(公告)号：US20050238367A1

公开(公告)日：2005-10-27

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： G02F1/03 ,  G02F1/01 ,  G02F1/17 ,  G02F3/00 ,  H04B10/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04B10/155 ,  H04L27/34 ,  H04L27/36

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。

公开(公告)号：US07403711B2

公开(公告)日：2008-07-22

申请号：US11284865

申请日：2005-11-22

申请人： Young-Kai Chen ,  Andreas Leven

发明人： Young-Kai Chen ,  Andreas Leven

IPC分类号： H04J14/00 ,  H04J14/02 ,  G02F1/35 ,  H03M1/00

CPC分类号： H04B10/66 ,  G02F7/00 ,  G02F2001/212 ,  G02F2001/217 ,  G02F2201/05

摘要： An optical digital-to-analog (D/A) converter and a method of optically converting digital data into analog form. In one embodiment, the optical D/A converter includes: (1) a splitter configured to receive and split an input coherent optical carrier into a plurality of mutually coherent optical carriers, (2) a switching stage coupled to the splitter and including a corresponding plurality of selector switches configured to pass or interrupt selected ones of the plurality of coherent optical carriers responsive to pattern bits, (3) an amplitude and phase offset stage coupled to the switching stage and including a corresponding plurality of amplitude and phase offset units configured to offset amplitudes or phases of passed ones of the plurality of mutually coherent optical carriers responsive to offset signals and (4) a combiner coupled to the amplitude and phase offset stage and configured to recombine the mutually coherent optical carriers to yield an optical output signal.

摘要翻译： 光数字模拟（D / A）转换器和将数字数据光学转换为模拟形式的方法。 在一个实施例中，光学D / A转换器包括：（1）分配器，被配置为将输入相干光载波接收并分离成多个相互相干的光载波，（2）耦合到分离器的切换级并且包括相应的 多个选择器开关，其被配置为响应于图案位传递或中断所述多个相干光载波中的选定的一个;（3）耦合到所述切换级的幅度和相位偏移级，并且包括对应的多个幅度和相位偏移单元， 响应于偏移信号，多个相互相干光载波中经过的相位偏移幅度或相位的偏移幅度或相位;（4）耦合到幅度和相位偏移级的组合器，并被配置为重组相互相干的光载波以产生光输出信号。

公开(公告)号：US20070206958A1

公开(公告)日：2007-09-06

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： H04B10/04

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。

公开(公告)号：US20070036555A1

公开(公告)日：2007-02-15

申请号：US11204607

申请日：2005-08-15

申请人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

发明人： Young-Kai Chen ,  Ut-Va Koc ,  Andreas Leven

IPC分类号： H04B10/04

CPC分类号： H04L27/223 ,  H04B10/60 ,  H04B10/6164 ,  H04B10/6165 ,  H04B10/63 ,  H04L27/227 ,  H04L2027/003

摘要： A receiver for coherent detection of a PSK modulated optical carrier includes an optical detector, digital-to-analog converters, and a digital module. The optical detector is configured to mix the modulated optical carrier with two phase components of a reference optical carrier and to produce analog output signals representative of optical signals produced by said mixing. The digital-to-analog converters are connected to receive the analog output signals and to produce digital signals from the received analog output signals. The digital module is connected to receive the digital signals and to perform one of compensating the received digital signals for a conjugate phase misalignment between the mixed components, extracting phase of the received digital signals, and estimating a frequency offset between the two carriers from the received digital signals.

摘要翻译： 用于PSK调制光载波的相干检测的接收机包括光检测器，数 - 模转换器和数字模块。 光学检测器被配置为将调制光载波与参考光载波的两相分量进行混合，并产生代表由所述混频产生的光信号的模拟输出信号。 数模转换器被连接以接收模拟输出信号并从接收到的模拟输出信号产生数字信号。 数字模块被连接以接收数字信号，并执行补偿接收到的数字信号之一用于混合分量之间的共轭相位失准，提取接收到的数字信号的相位，以及从接收到的两个载波之间估计两个载波之间的频率偏移 数字信号。