公开(公告)号：US08073345B2

公开(公告)日：2011-12-06

申请号：US11644536

申请日：2006-12-22

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

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

IPC分类号： H04B10/06

CPC分类号： H04B10/611 ,  H04B10/61 ,  H04B10/6161 ,  H04B10/6164 ,  H04B10/6165 ,  H04B10/6166

摘要： A method for determining symbols PSK modulated on an optical carrier includes interfering a first polarization component of the modulated optical carrier and a reference optical carrier in a first optical mixer and interfering the first polarization component of the modulated optical carrier and the reference with a different relative phase in a second optical mixer. The method also includes sampling the interfered carriers from the first optical mixer to produce first digital sampled values and sampling the interfered carriers from the second optical mixer to produce second digital sampled values. The first and second digital sampled values of a sampling period form a first complex sampling value thereof. The method also includes offsetting a phase of a complex signal value corresponding to each first complex sampling value to correct for a phase error caused by a frequency offset between the modulated and reference optical carriers.

摘要翻译： 一种用于确定在光载波上调制的符号PSK的方法包括：在第一光混合器中干扰调制光载波的第一偏振分量和参考光载波，并将调制的光载波的第一偏振分量与参考用不同的相对 在第二光学混合器中。 该方法还包括对来自第一光混合器的受干扰载波进行采样，以产生第一数字采样值，并对来自第二光混合器的干扰载波进行采样以产生第二数字采样值。 采样周期的第一和第二数字采样值形成其第一复数采样值。 该方法还包括抵消对应于每个第一复数采样值的复信号值的相位，以校正由调制参考光载波之间的频率偏移引起的相位误差。

公开(公告)号：US07747177B2

公开(公告)日：2010-06-29

申请号：US11204607

申请日：2005-08-15

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

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

IPC分类号： H04B10/00

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，并且从接收到的两个载波之间估计频率偏移 数字信号。

公开(公告)号：US20080152361A1

公开(公告)日：2008-06-26

申请号：US11644536

申请日：2006-12-22

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

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

IPC分类号： H04B10/06

CPC分类号： H04B10/611 ,  H04B10/61 ,  H04B10/6161 ,  H04B10/6164 ,  H04B10/6165 ,  H04B10/6166

摘要： A method for determining symbols PSK modulated on an optical carrier includes interfering a first polarization component of the modulated optical carrier and a reference optical carrier in a first optical mixer and interfering the first polarization component of the modulated optical carrier and the reference with a different relative phase in a second optical mixer. The method also includes sampling the interfered carriers from the first optical mixer to produce first digital sampled values and sampling the interfered carriers from the second optical mixer to produce second digital sampled values. The first and second digital sampled values of a sampling period form a first complex sampling value thereof. The method also includes offsetting a phase of a complex signal value corresponding to each first complex sampling value to correct for a phase error caused by a frequency offset between the modulated and reference optical carriers.

摘要翻译： 一种用于确定在光载波上调制的符号PSK的方法包括：在第一光混合器中干扰调制光载波的第一偏振分量和参考光载波，并将调制的光载波的第一偏振分量与参考用不同的相对 在第二光学混合器中。 该方法还包括对来自第一光混合器的受干扰载波进行采样，以产生第一数字采样值，并对来自第二光混合器的干扰载波进行采样以产生第二数字采样值。 采样周期的第一和第二数字采样值形成其第一复数采样值。 该方法还包括抵消对应于每个第一复数采样值的复信号值的相位，以校正由调制参考光载波之间的频率偏移引起的相位误差。

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：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：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：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：US08055141B2

公开(公告)日：2011-11-08

申请号：US11957725

申请日：2007-12-17

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

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

IPC分类号： H04B10/06 ,  H04B10/00

CPC分类号： H04B10/00 ,  H04B2210/006

摘要： An apparatus and method for reducing electrical signal intermodulation by processing a balanced electrical signal in the optical domain in a manner adapted to reduce noise and second order intermodulation, and converting the processed optical signal back to an electrical domain signal with either a single or balanced (differential) outputs.

摘要翻译： 一种用于通过以适于减少噪声和二阶互调的方式处理光域中的平衡电信号并且将经处理的光信号转换回具有单个或平衡的电域信号的方式来减少电信号互调的装置和方法 差分）输出。