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。

公开(公告)号：US20060034618A1

公开(公告)日：2006-02-16

申请号：US10914989

申请日：2004-08-10

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： H04B10/2513 ,  H04B10/2569

摘要： An adaptive optical parallel equalizer architecture is based on a controllable optical modulator 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 squares) 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 modulator 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调制器装置，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。 在一个特定实施例中，相位和振幅都被调整为多个平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使用独特的光电LMS处理的光调制器光输出信号 。

公开(公告)号：US07650084B2

公开(公告)日：2010-01-19

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：US07496298B2

公开(公告)日：2009-02-24

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： H04B10/06 ,  H04B10/18 ,  H04B10/14

CPC分类号： H04B10/2513 ,  H04B10/2569

摘要： An apparatus and method for use in an adaptive optical equalizer including, in one embodiment an optical equalizer having an input and output coupled to receive an incoming optical signal and configured to generate an output optical signal by phase modulation and/or amplitude modulation of the receive optical signal in response to electronic control signals. A photodiode is configured to receive the output optical signal and generate an representative current signal. A control signal generator is configured to generate the electronic control signals in accordance with predetermined criteria and in response to the representative current signal from the photodiode. An interferometer is connected to receive the incoming and output optical signal from the optical equalizer, the differential amplifier is configured to receive electronic versions of outputs from the interferometer for generating a difference signal and supplying the difference signal to the control signal generator.

摘要翻译： 一种在自适应光学均衡器中使用的装置和方法，包括在一个实施例中，光学均衡器具有耦合以接收输入光信号并被配置为通过接收机的相位调制和/或幅度调制产生输出光信号的输入和输出 光信号响应于电子控制信号。 光电二极管被配置为接收输出光信号并产生代表性的电流信号。 控制信号发生器被配置为根据预定标准并且响应于来自光电二极管的代表性电流信号产生电子控制信号。 连接干涉仪以接收来自光学均衡器的输入和输出光信号，差分放大器被配置为从干涉仪接收电子版本的输出，用于产生差分信号并将差分信号提供给控制信号发生器。

公开(公告)号：US20080195335A1

公开(公告)日：2008-08-14

申请号：US11705926

申请日：2007-02-14

申请人： John Richard DeSalvo ,  Geoffrey Lynn Burdge ,  Bruce W. FitzGerald ,  Young-Kai Chen ,  Andreas Leven ,  Peter Delfyett

发明人： John Richard DeSalvo ,  Geoffrey Lynn Burdge ,  Bruce W. FitzGerald ,  Young-Kai Chen ,  Andreas Leven ,  Peter Delfyett

IPC分类号： G06F19/00 ,  G01N21/47 ,  G02F1/01

CPC分类号： G01N21/3581 ,  G01N21/3504 ,  G01N21/49 ,  G01N21/94 ,  G01N2021/1795 ,  G02F2203/13

摘要： A method is provided for identifying a contaminant in a gaseous space. The method includes: generating a broadband optical waveform; shaping the optical waveform to match an expected waveform for a known contaminant; and transmitting the shaped optical waveform towards an unknown contaminant. Upon receiving a reflected optical waveform from the unknown contaminant, determining whether the unknown contaminant correlates to the known contaminant based on the reflected waveform.

摘要翻译： 提供了一种用于识别气体空间中的污染物的方法。 该方法包括：产生宽带光波形; 使光学波形成形以匹配已知污染物的期望波形; 并将成形的光波形传送到未知的污染物。 在从未知污染物接收到反射光波形时，基于反射波形确定未知污染物是否与已知污染物相关。

公开(公告)号：US07292792B2

公开(公告)日：2007-11-06

申请号：US10674722

申请日：2003-09-30

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： H04B10/506 ,  H04J14/02 ,  H04J14/0298 ,  H04L27/2637 ,  H04L27/2653

摘要： A method for transmitting digital data includes splitting a coherent optical carrier having a subcarrier into mutually coherent optical carriers, producing corresponding sequences of phase shifts in each of the mutually coherent optical carriers, and then, interfering the mutually coherent optical carriers. The interfering produces an output optical carrier whose subcarrier has modulated inphase and quadrature components with a corresponding sequence of pairs of values. The pairs of values of the modulated inphase and quadrature phase components produced by the interfering correspond to a sequence of coordinate pairs for the signal points the 4-PSK 2D, 16-QAM 2D, or 16-PSK 2D constellation.

摘要翻译： 一种用于发送数字数据的方法包括将具有子载波的相干光载波划分为相互相干的光载波，在相互相干的光载波中产生相应的相移序列，然后干扰相互相干的光载波。 干扰产生一个输出光载波，其载波具有调制同相和正交分量以及对应的值对序列。 由干扰产生的调制同相和正交相位分量的值对对对应于用于信号的坐标对的序列指向4-PSK 2D，16-QAM 2D或16-PSK 2D星座。

公开(公告)号：US20070116461A1

公开(公告)日：2007-05-24

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

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：US20050168364A1

公开(公告)日：2005-08-04

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： G02F1/015 ,  G02F1/025 ,  G02F7/00 ,  H03M1/66 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H03M1/00

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：US20050068887A1

公开(公告)日：2005-03-31

申请号：US10674722

申请日：2003-09-30

申请人： Young-Kai Chen ,  Andreas Leven

发明人： Young-Kai Chen ,  Andreas Leven

IPC分类号： G02F1/015 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04B10/155 ,  H04J14/02 ,  H04L27/26 ,  H04L5/12

CPC分类号： H04B10/506 ,  H04J14/02 ,  H04J14/0298 ,  H04L27/2637 ,  H04L27/2653

摘要： A method for transmitting digital data includes splitting a coherent optical carrier having a subcarrier into mutually coherent optical carriers, producing corresponding sequences of phase shifts in each of the mutually coherent optical carriers, and then, interfering the mutually coherent optical carriers. The interfering produces an output optical carrier whose subcarrier has modulated inphase and quadrature components with a corresponding sequence of pairs of values. The pairs of values of the modulated inphase and quadrature phase components produced by the interfering correspond to a sequence of coordinate pairs for the signal points the 4-PSK 2D, 16-QAM 2D, or 16-PSK 2D constellation.

摘要翻译： 一种用于发送数字数据的方法包括将具有子载波的相干光载波划分为相互相干的光载波，在相互相干的光载波中产生相应的相移序列，然后干扰相互相干的光载波。 干扰产生一个输出光载波，其载波具有调制同相和正交分量以及对应的值对序列。 由干扰产生的调制同相和正交相位分量的值对对对应于用于信号的坐标对的序列指向4-PSK 2D，16-QAM 2D或16-PSK 2D星座。

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。