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1. 发明申请

US20180145865A1 PHASE AMBIGUITY PROCESSING METHOD AND DEVICE FOR QUADRATURE AMPLITUDE MODULATION SIGNAL 审中-公开
公开(公告)号：US20180145865A1
公开(公告)日：2018-05-24
申请号：US15574457
申请日：2016-03-14
申请人： ZTE CORPORATION
发明人： Aimei FEI
IPC分类号： H04L27/34 , H04J14/06 , H04J14/00
CPC分类号： H04L27/3455 , H04B10/50 , H04J14/002 , H04J14/06 , H04L27/34 , H04L27/38 , H04L27/3827 , H04L27/3872
摘要： A phase ambiguity processing method and device are provided. The phase ambiguity processing method includes: deciding symbols on a Y polarization state and an X polarization state of a received signal, and mapping to obtain first bit information, where the received signal includes a plurality of first signals; checking and analyzing the first bit information to generate a first check result; judging the first check result to obtain a judgment result as to whether the received signal has phase ambiguity; acquiring at least one of the plurality of first signals in the received signal when the judgment result indicates that the received signal has phase ambiguity; performing phase rotation on the first signal to obtain a second signal; and checking and analyzing the second signal, storing the second signal so that the first signal is replaced with the second signal for decoding processing if a check result is normal.

2. 发明授权

US09264172B2 Method of optical data transmission using polarization division multiplexing 有权
标题翻译：使用偏振分复用的光数据传输方法
公开(公告)号：US09264172B2
公开(公告)日：2016-02-16
申请号：US14000280
申请日：2012-03-05
申请人： Olivier Rival , Francesco Vacondio
发明人： Olivier Rival , Francesco Vacondio
IPC分类号： H04B10/00 , H04J14/06 , H04B10/532 , H04B10/61 , H04J14/00
CPC分类号： H04J14/06 , H04B10/532 , H04B10/614 , H04J14/002
摘要： Proposed is a method of optical data transmission. The method comprises different steps. A first optical signal and a second optical signal are generated, such that the optical signals possess a same wavelength, respective phases, which are modulated in dependence on respective data values, and respective polarization states, which are essentially orthogonal to each other. A combined optical signal is generated, by combining the optical signals, such that the combined optical signal possesses a polarization state with a predetermined variation. The combined optical signal is transmitter over an optical transmission line and received. Two time-discrete sampled signals are generated, by sampling the received optical signal along two orthogonal polarization planes. Two filtered signals are generated, by filtering the time-discrete sampled signals in the time-discrete domain, using a function that is indicative of the respective predetermined variation. Finally, respective data values are derived from the filtered signals.
摘要翻译：提出了一种光数据传输的方法。该方法包括不同的步骤。产生第一光信号和第二光信号，使得光信号具有相同的波长，根据相应的数据值调制的各个相位以及基本上彼此正交的相应极化状态。通过组合光信号来产生组合的光信号，使得组合光信号具有预定变化的偏振状态。组合的光信号是通过光传输线路发送并接收的。通过沿两个正交极化平面对接收到的光信号进行采样来产生两个时间离散采样信号。通过使用表示相应的预定变化的函数对时间离散域中的时间离散采样信号进行滤波来产生两个滤波信号。最后，从滤波信号导出相应的数据值。

3. 发明授权

US09219548B2 Modulator with marking of polarization 有权
标题翻译：具有极化标记的调制器
公开(公告)号：US09219548B2
公开(公告)日：2015-12-22
申请号：US13496669
申请日：2010-09-15
申请人： Massimiliano Salsi , Jeremie Renaudier
发明人： Massimiliano Salsi , Jeremie Renaudier
IPC分类号： H04B10/00 , H04B10/08 , H04B10/04 , H04B10/06 , H04B10/556 , H04B10/60 , H04J14/00 , H04J14/06 , H04B10/2575
CPC分类号： H04B10/5561 , H04B10/2575 , H04B10/60 , H04B10/6166 , H04B2201/70727 , H04B2210/074 , H04B2210/075 , H04J14/002 , H04J14/06
摘要： A modulator with polarization marking comprising two input ports for receiving two optical signals at one wavelength, and exhibiting essentially perpendicular optical polarization states, capable of phase-modulating those signals with data signals and of combining them with polarization, characterized in that it comprises a source of phase overmodulation for overmodulating the phase of one of said two optical signals, said phase overmodulation exhibiting a modulation frequency substantially lower than the modulation frequency of said data signals. A method and a coherent receiver are also disclosed.
摘要翻译：具有偏振标记的调制器包括两个输入端口，用于在一个波长处接收两个光信号，并呈现出基本上垂直的光学偏振状态，能够用数据信号对这些信号进行相位调制并将其与极化相结合，其特征在于，其包括源相位过调制用于过调制所述两个光信号之一的相位，所述相位过调制表现出显着低于所述数据信号的调制频率的调制频率。还公开了一种方法和相干接收机。

4. 发明授权

US09088371B2 WDM telecommunications link with coherent detection and optical frequency comb sources 有权
标题翻译： WDM电信链路具有相干检测和光频梳状源
公开(公告)号：US09088371B2
公开(公告)日：2015-07-21
申请号：US14114872
申请日：2012-04-27
申请人： Jeremy Witzens
发明人： Jeremy Witzens
IPC分类号： H04B10/61 , H04B10/64 , H04J14/00 , H04J14/02
CPC分类号： H04B10/6164 , H04B10/64 , H04J14/002 , H04J14/02
摘要： An optical data link has a transmitter and a receiver with coherent detection at the receiver and more than one optical carrier frequency. The optical carrier frequencies are generated by a frequency comb source in both the transmitter and the receiver. The frequency comb sources generate frequency combs that have frequency components and a free spectral range. The optical carrier frequencies transport more than one optical channel. Either at least one frequency component or the free spectral range of the optical comb generated at the receiver is locked to the comb generated at the transmitter by an optical phase locked loop, or an electrical phase locked loop or a feed-forward carrier recovery generates an intermediate frequency carrier reference that is routed to more than one channel to demodulate the data.
摘要翻译：光学数据链路具有在接收机处具有相干检测的发射机和接收机以及多于一个的光载波频率。光载波频率由发射机和接收机中的频率梳源产生。频率梳源产生具有频率分量和自由光谱范围的频率梳。光载波频率传输多于一个光通道。在接收机处产生的光梳的至少一个频率分量或自由频谱范围通过光锁相环锁定在发射机处产生的梳，或者电锁相环或前馈载波恢复产生路由到多个信道以解调数据的中频载波参考。

5. 发明授权

US09083471B2 Coherent and self-coherent signal processing techniques 有权
标题翻译：相干和自相干信号处理技术
公开(公告)号：US09083471B2
公开(公告)日：2015-07-14
申请号：US14005302
申请日：2012-03-01
申请人： Igor Tselniker , Netta Sigron , Moshe Nazarathy
发明人： Igor Tselniker , Netta Sigron , Moshe Nazarathy
IPC分类号： H04B10/61 , H04L25/03 , H04L27/00 , H04L27/233 , H04L27/38
CPC分类号： H04B10/613 , H04B10/612 , H04B10/6165 , H04J14/002 , H04L25/03019 , H04L27/0014 , H04L27/2331 , H04L27/38 , H04L2027/0024
摘要： A receiver and a multi-symbol-differential-detection (MSDD) module, the MSDD may include an input node for receiving an input signal having a noisy phase; a summation and rotation unit; and an output unit; wherein the output unit is arranged to output an output signal and a normalized output signal; wherein the output signal represents the input signal but has a reconstructed phase; wherein the summation and rotation unit is arranged to receive the input signal and the output signal and to provide a reference signal that reflects a weighted sum of phase rotated and delayed previously received input signals; wherein the output unit comprises a phase difference calculator, a slicer, a delay unit and a normalizer; wherein the phase difference calculator is arranged to generate a difference signal indicative of a phase difference between the reference signal and the input signal; wherein the slicer and the delay unit are arranged to generate the output signal by slicing the difference signal to provide a sliced signal and by delaying the sliced signal; and wherein the normalizer is arranged to normalize the output signal to provide the normalized output signal.
摘要翻译：一种接收机和多符号差分检测（MSDD）模块，MSDD可以包括用于接收具有噪声相位的输入信号的输入节点; 总和和旋转单元; 和输出单元; 其中所述输出单元被布置成输出输出信号和归一化输出信号; 其中所述输出信号表示所述输入信号，但具有重构相位; 其中所述求和和旋转单元被布置为接收所述输入信号和所述输出信号，并且提供反映相位旋转和延迟的先前接收的输入信号的加权和的参考信号; 其中所述输出单元包括相位差计算器，限幅器，延迟单元和归一化器; 其中所述相位差计算器被配置为产生指示所述参考信号和所述输入信号之间的相位差的差信号; 其中所述限幅器和所述延迟单元被布置成通过对所述差分信号进行限幅来产生所述输出信号以提供分片信号并通过延迟所述分片信号; 并且其中所述归一化器被布置成使输出信号归一化以提供归一化的输出信号。

6. 发明申请

US20130294777A1 Reconfigurable Optical Transmitter 有权
标题翻译：可重构光发射机
公开(公告)号：US20130294777A1
公开(公告)日：2013-11-07
申请号：US13887119
申请日：2013-05-03
申请人： UNIVERSITY OF SOUTHERN CALIFORNIA
发明人： Alan E. Willner , Mohammad Reza Chitgarha , Salman Khaleghi
IPC分类号： H04J14/00
CPC分类号： H04J14/002 , H04B10/505 , H04B10/506 , H04B10/5161 , H04J14/00 , H04J14/02 , H04J14/0254
摘要： The present disclosure includes systems and techniques relating to reconfigurable optical transmitters. In some implementations, an apparatus, systems, or methods can include multiple ports to receive independent optical data signals or independent electrical signals that are converted into independent optical data signals, at least one optical pump laser, and one or more nonlinear optics elements configured and arranged to generate a phase conjugate for each of the independent optical data signals at least by combining the respective independent optical data signal with an output of the optical pump, and generate an output optical signal from the independent optical data signals at least by combining each of the independent optical data signals with its corresponding generated phase conjugate.
摘要翻译：本公开包括与可重新配置的光发射机有关的系统和技术。在一些实现中，装置，系统或方法可以包括多个端口以接收独立的光学数据信号或被转换成独立的光学数据信号的独立的电信号，至少一个光学泵浦激光器和一个或多个非线性光学元件，其被配置和至少通过将各个独立的光学数据信号与光泵浦的输出组合来产生每个独立的光学数据信号的相位共轭，并且从独立的光学数据信号产生输出的光学信号，至少通过将独立的光学数据信号与其相应的生成的相位共轭。

7. 发明授权

US08320760B1 Passive optical network with asymmetric modulation scheme 有权
标题翻译：无源光网络采用非对称调制方案
公开(公告)号：US08320760B1
公开(公告)日：2012-11-27
申请号：US13288555
申请日：2011-11-03
申请人： Cedric F. Lam , Hong Liu , Ryohei Urata
发明人： Cedric F. Lam , Hong Liu , Ryohei Urata
IPC分类号： H04J14/00
CPC分类号： H04J14/002 , H04J14/0257 , H04J14/0282
摘要： A passive optical network couples a WDM optical line terminal (“OLT”) to WDM optical network units (“ONUs”). The WDM OLT includes an optical transmitter array with coherent transmitters to generate downstream WDM signals encoded using phase modulation, an optical receiver array with direct detection photo-detectors to receive upstream WDM signals encoded with amplitude modulation, and an optical diplexer optically coupled to the optical transmitter array and the optical receiver array. The WDM ONU includes a tunable optical transmitter having a first tunable laser source coupled to generate a selectable upstream carrier wavelength and direct amplitude modulation circuitry coupled to amplitude modulate the first tunable laser source and a tunable optical receiver having coherent detection circuitry to demodulate phase information from the downstream WDM signals and a second tunable laser source operated as a local oscillator and coupled to tune to a selectable downstream carrier wavelength.
摘要翻译：无源光网络将WDM光线路终端（OLT）耦合到WDM光网络单元（ONU）。 WDM OLT包括具有相干发射机的光发射机阵列以产生使用相位调制编码的下行WDM信号，具有直接检测光检测器的光接收器阵列以接收以幅度调制编码的上行WDM信号，以及与光学耦合的光双工器发射器阵列和光接收器阵列。 WDM ONU包括可调光发射机，其具有耦合以产生可选择的上行载波波长的第一可调谐激光源和耦合到幅度调制第一可调谐激光源的直接幅度调制电路，以及具有相干检测电路的可调谐光学接收器，以从下游WDM信号和作为本地振荡器操作的第二可调谐激光源，并被耦合以调谐到可选择的下行载波波长。

8. 发明申请

US20120224855A1 DIGITAL PHASE CONJUGATION FOR FIBER-OPTIC LINKS 有权
标题翻译：光纤链路的数字相位匹配
公开(公告)号：US20120224855A1
公开(公告)日：2012-09-06
申请号：US13039580
申请日：2011-03-03
申请人： Xiang Liu , Chandrasekhar Sethumadhavan , Robert W. Tkach
发明人： Xiang Liu , Chandrasekhar Sethumadhavan , Robert W. Tkach
IPC分类号： H04B10/02 , H04B10/00 , H04J14/02 , H04L27/00
CPC分类号： H04B10/2543 , H04J14/002 , H04L2027/0018
摘要： An optical phase conjugator that can be deployed within a long-haul fiber-optic link of an optical WDM system to improve the system's tolerance to intra- and inter-channel nonlinear effects. In one embodiment, the optical phase conjugator has a digital signal processor configured to perform, in the digital electrical domain, a phase-conjugation transformation for various components of a WDM signal so that certain signal distortions imposed on that signal in the front portion of the fiber-optic link are reduced in the back portion of the link. Advantageously, the optical phase conjugator is flexibly configurable to employ an input-to-output carrier-frequency-mapping configuration that is most beneficial under particular operating conditions.
摘要翻译：光相位共轭器可以部署在光学WDM系统的长距离光纤链路中，以提高系统对通道内和通道间非线性效应的容限。在一个实施例中，光相位共轭器具有数字信号处理器，其被配置为在数字电域中执行WDM信号的各种分量的相位共轭变换，使得施加在该信号的某些信号失真光纤链路在链路的后部减少。有利地，光相位共轭器可灵活地配置为采用在特定操作条件下最有利的输入到输出载波频率映射配置。

9. 发明授权

US08260156B2 Adaptive crossing frequency domain equalization (FDE) in digital PolMux coherent systems 有权
标题翻译：数字PolMux相干系统中的自适应交叉频域均衡（FDE）
公开(公告)号：US08260156B2
公开(公告)日：2012-09-04
申请号：US12607166
申请日：2009-10-28
申请人： Dayou Qian , Ting Wang
发明人： Dayou Qian , Ting Wang
IPC分类号： H04B10/06 , H04B10/12 , H04B10/00
CPC分类号： H04J14/002 , H04B10/2513 , H04B10/60 , H04B10/6161 , H04B10/6162 , H04J14/06
摘要： A method for the polarization independent frequency domain equalization (FDE) on polarization multiplexing (POLMUX) coherent systems employing an adaptive crossing FDE which advantageously produces CD compensation, PMD compensation and PolDeMux within one functional block of a digital signal processor (DSP).
摘要翻译：一种在偏振复用（POLMUX）相干系统上使用自适应交叉FDE的偏振无关频域均衡（FDE）的方法，其有利地在数字信号处理器（DSP）的一个功能块内产生CD补偿，PMD补偿和PolDeMux。

10. 发明授权

US08135287B2 100 Gbit/s OFDM optical signal generation 有权
标题翻译： 100 Gbit / s OFDM光信号产生
公开(公告)号：US08135287B2
公开(公告)日：2012-03-13
申请号：US12183381
申请日：2008-07-31
申请人： Jianjun Yu , Ting Wang
发明人： Jianjun Yu , Ting Wang
IPC分类号： H04B10/04 , H04B10/12
CPC分类号： H04J14/06 , H04B10/5165 , H04B10/532 , H04B10/548 , H04J14/002 , H04L5/0014 , H04L27/2627 , H04L27/2697
摘要： A method includes modulating lightwaves to provide first and second OFDM signal sidebands at a first polarization direction and first and second OFDM signal sidebands at a second polarization direction, and combining sidebands that are oppositely positioned and joined from the first and second OFDM signal sidebands at each polarization direction to provide a polarization multiplexing OFDM signal.
摘要翻译：一种方法包括调制光波以在第一偏振方向提供第一和第二OFDM信号边带，以及在第二极化方向上提供第一和第二OFDM信号边带，并且组合在每一个处与第一和第二OFDM信号边带相对地定位和连接的边带偏振方向，以提供偏振复用OFDM信号。

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