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1. 发明申请

US20110255879A1 Electronic Nonlinearity Compensation For Optical Transmission Systems 有权
标题翻译：光传输系统的电子非线性补偿
公开(公告)号：US20110255879A1
公开(公告)日：2011-10-20
申请号：US12762127
申请日：2010-04-16
申请人： Chongjin Xie , René-Jean Essiambre
发明人： Chongjin Xie , René-Jean Essiambre
IPC分类号： H04B10/06
CPC分类号： H04B10/2572 , H04B10/2513 , H04B10/2543 , H04B10/60 , H04B10/611 , H04B10/6161 , H04B10/6162
摘要： Embodiments for optical communication are provided in which a receiver includes a digital signal processor configured to process a digital form of an input signal. In one embodiment, the digital signal processor includes a first electronic chromatic dispersion compensation module for compensating the digital form of the input signal, at least one nonlinearity compensation stage for serially compensating an output of the electronic chromatic dispersion compensation module; and a second electronic chromatic dispersion compensation module for compensating an output of the at least one nonlinearity compensation stage.
摘要翻译：提供了用于光通信的实施例，其中接收机包括被配置为处理数字形式的输入信号的数字信号处理器。在一个实施例中，数字信号处理器包括用于补偿输入信号的数字形式的第一电子色散补偿模块，用于串行补偿电子色散补偿模块的输出的至少一个非线性补偿级; 以及用于补偿所述至少一个非线性补偿级的输出的第二电子色散补偿模块。

2. 发明申请

US20130336649A1 ADAPTIVE CONSTELLATIONS AND DECISION REGIONS FOR AN OPTICAL TRANSPORT SYSTEM 有权
标题翻译：光学运输系统的适应性协调和决策区域
公开(公告)号：US20130336649A1
公开(公告)日：2013-12-19
申请号：US13525936
申请日：2012-06-18
申请人： René-Jean Essiambre , Chongjin Xie
发明人： René-Jean Essiambre , Chongjin Xie
IPC分类号： H04B10/06 , H04B10/08
CPC分类号： H04B10/616 , H04L1/0003 , H04L27/06 , H04L27/223 , H04L27/38
摘要： An optical transport system in which (i) an optical transmitter is configured to adaptively change an operative constellation to use a constellation that provides optimal performance characteristics for the present optical-link conditions and/or (ii) an optical receiver is configured to change shapes of the decision regions corresponding to an operative constellation to adapt them to the type of signal distortions experienced by a transmitted optical signal in the optical link between the transmitter and receiver. Under some optical-link conditions, the optical receiver might use a decision-region configuration in which a decision region corresponding to a first constellation point includes an area that is closer in distance to a different second constellation point than to the first constellation point.
摘要翻译：一种光传输系统，其中（i）光发射机被配置为自适应地改变操作星座以使用为当前光链路条件提供最佳性能特征的星座，和/或（ii）光接收机被配置为改变形状对应于操作星座的判定区域，以使它们适应发射机和接收机之间的光链路中发射的光信号所经历的信号失真的类型。在一些光链路条件下，光接收机可以使用决策区域配置，其中对应于第一星座点的判定区域包括距离不同的第二星座点的距离比与第一星座点更近的区域。

3. 发明授权

US08897655B2 Adaptive constellations and decision regions for an optical transport system 有权
标题翻译：光学传输系统的自适应星座和决定区域
公开(公告)号：US08897655B2
公开(公告)日：2014-11-25
申请号：US13525936
申请日：2012-06-18
申请人： René-Jean Essiambre , Chongjin Xie
发明人： René-Jean Essiambre , Chongjin Xie
IPC分类号： H04B10/00 , H04B10/06 , H04L5/12 , H04L23/02
CPC分类号： H04B10/616 , H04L1/0003 , H04L27/06 , H04L27/223 , H04L27/38
摘要： An optical transport system in which (i) an optical transmitter is configured to adaptively change an operative constellation to use a constellation that provides optimal performance characteristics for the present optical-link conditions and/or (ii) an optical receiver is configured to change shapes of the decision regions corresponding to an operative constellation to adapt them to the type of signal distortions experienced by a transmitted optical signal in the optical link between the transmitter and receiver. Under some optical-link conditions, the optical receiver might use a decision-region configuration in which a decision region corresponding to a first constellation point includes an area that is closer in distance to a different second constellation point than to the first constellation point.
摘要翻译：一种光传输系统，其中（i）光发射机被配置为自适应地改变操作星座以使用为当前光链路条件提供最佳性能特征的星座，和/或（ii）光接收机被配置为改变形状对应于操作星座的判定区域，以使它们适应发射机和接收机之间的光链路中发射的光信号所经历的信号失真的类型。在一些光链路条件下，光接收机可以使用决策区域配置，其中对应于第一星座点的判定区域包括距离不同的第二星座点的距离比与第一星座点更近的区域。

4. 发明授权

US08494368B2 Electronic nonlinearity compensation for optical transmission systems 有权
标题翻译：光传输系统的电子非线性补偿
公开(公告)号：US08494368B2
公开(公告)日：2013-07-23
申请号：US12762127
申请日：2010-04-16
申请人： Chongjin Xie , René-Jean Essiambre
发明人： Chongjin Xie , René-Jean Essiambre
IPC分类号： H04B10/00 , H04B10/12 , H04J14/02
CPC分类号： H04B10/2572 , H04B10/2513 , H04B10/2543 , H04B10/60 , H04B10/611 , H04B10/6161 , H04B10/6162
摘要： Embodiments for optical communication are provided in which a receiver includes a digital signal processor configured to process a digital form of an input signal. In one embodiment, the digital signal processor includes a first electronic chromatic dispersion compensation module for compensating the digital form of the input signal, at least one nonlinearity compensation stage for serially compensating an output of the electronic chromatic dispersion compensation module; and a second electronic chromatic dispersion compensation module for compensating an output of the at least one nonlinearity compensation stage.
摘要翻译：提供了用于光通信的实施例，其中接收机包括被配置为处理数字形式的输入信号的数字信号处理器。在一个实施例中，数字信号处理器包括用于补偿输入信号的数字形式的第一电子色散补偿模块，用于串行补偿电子色散补偿模块的输出的至少一个非线性补偿级; 以及用于补偿所述至少一个非线性补偿级的输出的第二电子色散补偿模块。

5. 发明授权

US09374188B2 Optical communication using polarized transmit signal 有权
标题翻译：使用偏振发射信号的光通信
公开(公告)号：US09374188B2
公开(公告)日：2016-06-21
申请号：US12316389
申请日：2008-12-12
申请人： René-Jean Essiambre , Stefan Weisser , Peter J. Winzer , Chongjin Xie
发明人： René-Jean Essiambre , Stefan Weisser , Peter J. Winzer , Chongjin Xie
IPC分类号： H04B10/00 , H04J14/06
CPC分类号： H04J14/06
摘要： A WDM system having at least two channels, each of which employs two polarizations, is arranged so that the start times of symbols carried by one polarization of a channel are displaced in time from the start times of symbols carried by the other polarization of that channel, e.g., the start time for each symbol on one polarization is not substantially synchronized with the closest-in-time symbol start time on the other polarization of that channel. Preferably, the data signals are modulated using a return-to-zero (RZ) format and the start times of the symbols of the data signal carried by one polarization of a channel is offset from the start time of the symbols data signal carried by the other polarization of that channel by between 20% to 80%—preferably 50%—of the symbol period of the data signals, when the data signals have the same symbol period.
摘要翻译：布置具有至少两个通道的WDM系统，每个通道采用两个极化，以使得通道的一个极化所承载的符号的开始时间从该通道的另一个极化所承载的符号的开始时间的时间偏移例如，一个极化上的每个符号的开始时间基本上与该通道的另一个极化上的最接近时间符号开始时间同步。优选地，使用归零（RZ）格式对数据信号进行调制，并且通过信道的一个极化承载的数据信号的符号的开始时间偏离由信道携带的符号数据信号的开始时间当数据信号具有相同的符号周期时，该信道的其它极化在数据信号的符号周期的20％至80％之间优选地为50％。

6. 发明申请

US20140079394A1 Optical Communication Of Interleaved Symbols Associated With Polarizations 有权
标题翻译：与极化相关的交织符号的光通信
公开(公告)号：US20140079394A1
公开(公告)日：2014-03-20
申请号：US13632094
申请日：2012-09-30
申请人： Chongjin Xie , Luis Salamanca
发明人： Chongjin Xie , Luis Salamanca
IPC分类号： H04J14/06 , H04B10/04
CPC分类号： H04B10/532 , H04B10/5053 , H04B10/5055
摘要： An apparatus comprises a coherent optical transmitter. The coherent optical transmitter comprises a first modulator for generating a first polarization, a second modulator for generating a second polarization, and a symbol interleaver configured to receive a first symbol stream intended to be transmitted on a first polarization and a second symbol stream intended to be transmitted on a second polarization, to direct one portion of symbols of the first symbol stream to the first modulator for modulation onto the first polarization and another portion of the symbols of the first symbol stream to the second modulator for modulation onto the second polarization, and to direct one portion of symbols of the second symbol stream to the first modulator for modulation onto the first polarization and another portion of the symbols of the second symbol stream to the second modulator for modulation onto the second polarization.
摘要翻译：一种装置包括相干光发射机。相干光发射机包括用于产生第一极化的第一调制器，用于产生第二极化的第二调制器和被配置为接收旨在在第一偏振上传输的第一符号流的符号交织器和旨在被发送的第二符号流的第一符号流在第二偏振上传输，以将第一符号流的符号的一部分引导到第一调制器，以调制到第一符号流的第一偏振和第一符号流的符号的另一部分到第二调制器，以调制到第二偏振上，以及将第二符号流的符号的一部分引导到第一调制器，用于调制到第二偏振上的第一偏振和第二符号流的符号的另一部分到第二调制器以调制到第二偏振上。

7. 发明申请

US20110142449A1 Method And Apparatus For Polarization-Division-Multiplexed Optical Coherent Receivers 有权
标题翻译：用于偏振分复用光学相干接收机的方法和装置
公开(公告)号：US20110142449A1
公开(公告)日：2011-06-16
申请号：US12635129
申请日：2009-12-10
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： H04J14/06 , H04B10/06
CPC分类号： H04J14/06 , H04B10/60 , H04B10/611 , H04B10/6161 , H04B10/6162
摘要： The singularity problem of the constant modulus algorithm (CMA) equalizer may be overcome by implementing the CMA equalizer as a two-stage equalizer, with the first stage being a modified version of a CMA equalizer and the second stage being a conventional CMA equalizer. The first stage may be made up of four sub-equalizers, of which only two of the sub-equalizers are independent, i.e., uncorrelated to each other. This first stage equalizer may compensate for PMD. The second stage equalizer is a conventional CMA equalizer made up of four sub-equalizers that are adjusted independently. This second stage equalizer may compensate for polarization-dependent loss (PDL) and any residual CD that is not fully compensated for by a CD compensator before the two-stage equalizer. Advantageously, as the determinant of the first stage never approaches zero, the singularity problem of a conventional CMA single-stage-only equalizer is avoided by the two-stage equalizer.
摘要翻译：恒模算法（CMA）均衡器的奇异性问题可以通过将CMA均衡器实现为两级均衡器来克服，其中第一级是CMA均衡器的修改版本，第二级是常规CMA均衡器。第一级可以由四个子均衡器组成，其中只有两个子均衡器是独立的，即彼此不相关。该第一级均衡器可以补偿PMD。第二级均衡器是由独立调整的四个子均衡器组成的常规CMA均衡器。该第二级均衡器可补偿在两级均衡器之前由CD补偿器未完全补偿的偏振相关损耗（PDL）和任何残留CD。有利地，由于第一级的决定因素从不接近零，所以通过两级均衡器来避免常规CMA单级均衡器的奇异性问题。

8. 发明授权

US07764423B2 Polarization-independent four-wave mixing in a birefringent fiber 有权
标题翻译：双折射光纤中的极化独立四波混频
公开(公告)号：US07764423B2
公开(公告)日：2010-07-27
申请号：US12259389
申请日：2008-10-28
申请人： Colin J. McKinstrie , Chongjin Xie
发明人： Colin J. McKinstrie , Chongjin Xie
IPC分类号： G02F1/35 , H04B10/00
CPC分类号： G02F1/395 , G02F1/3536
摘要： A two-pump optical parametric device (OPD) having a nonlinear birefringent fiber, in which various four-wave mixing (FWM) processes can occur. The OPD applies, to the nonlinear birefringent fiber, two pump waves, each polarized at about 45 degrees with respect to a birefringence axis of the fiber, and a polarized input signal. A relevant FWM process couples the pump waves and the signal to cause the fiber to generate a desired output signal. In one configuration, the relevant FWM process is inverse modulational interaction, which causes the desired output signal to be generated through amplification or attenuation of the input signal. In another configuration, the relevant FWM process is phase conjugation, which causes the desired output signal to be generated through amplification of the input signal. In yet another configuration, the relevant FWM process is Bragg scattering, which causes the desired output signal to be generated as a corresponding idler signal.
摘要翻译：具有非线性双折射光纤的双泵光参量装置（OPD），其中可发生各种四波混频（FWM）处理。 OPD对非线性双折射光纤应用两个泵浦波，每个泵波相对于光纤的双折射轴以约45度偏振，并且偏振输入信号。相关的FWM过程耦合泵浦波和信号以使光纤产生期望的输出信号。在一种配置中，相关的FWM过程是反向调制交互，这导致通过输入信号的放大或衰减来产生期望的输出信号。在另一种配置中，相关的FWM过程是相位共轭，其通过放大输入信号来产生期望的输出信号。在另一个配置中，相关的FWM过程是布拉格散射，其使得期望的输出信号被产生为相应的惰轮信号。

9. 发明申请

US20050185969A1 Method and apparatus for processing optical duobinary signals 有权
标题翻译：用于处理光学双二进制信号的方法和装置
公开(公告)号：US20050185969A1
公开(公告)日：2005-08-25
申请号：US10782231
申请日：2004-02-19
申请人： Lothar Benedict Moeller , Chongjin Xie
发明人： Lothar Benedict Moeller , Chongjin Xie
IPC分类号： H04B10/04 , H04B10/00 , H04B10/06 , H04B10/142 , H04B10/152 , H04B10/158 , H04L25/497
CPC分类号： H04B10/695 , H04L25/497
摘要： An optical receiver adapted to apply multiple-sampling processing to an optical duobinary signal received over a transmission link in an optical communication system. In one embodiment, the receiver has an optical-to-electrical signal converter coupled to a decoder adapted to process an electrical signal generated by the converter to generate a bit sequence corresponding to the optical signal. To generate a bit value, the decoder first obtains two or more bit estimate values by sampling the electrical signal within a corresponding signaling interval two or more times. The decoder then applies a logical function to the bit estimate values, which produces the corresponding bit value for the bit sequence. Advantageously, embodiments of the present invention improve overall back-to-back (i.e., source-to-destination) system performance, e.g., by reducing the number of decoding errors associated with timing jitter and/or spontaneous beat noise in the received optical signal.
摘要翻译：一种光接收器，适于对通过光通信系统中的传输链路接收的光双二进制信号应用多采样处理。在一个实施例中，接收机具有耦合到解码器的光电信号转换器，其适于处理由转换器产生的电信号以产生对应于光信号的比特序列。为了产生位值，解码器首先通过在相应的信令间隔内对两个或更多次的电信号进行采样来获得两个或更多个比特估计值。然后，解码器将逻辑功能应用于比特估计值，其产生比特序列的相应比特值。有利地，本发明的实施例通过减少与接收到的光信号中的定时抖动和/或自发性差拍噪声相关联的解码错误的数量来改进整体背靠背（即，源到目的地）的系统性能。

10. 发明授权

US08849130B2 Coherent optical receivers for colorless reception 有权
标题翻译：相干光接收器，用于无色接收
公开(公告)号：US08849130B2
公开(公告)日：2014-09-30
申请号：US13537467
申请日：2012-06-29
申请人： Chongjin Xie , Peter J. Winzer
发明人： Chongjin Xie , Peter J. Winzer
IPC分类号： H04B10/00 , H04B10/61
CPC分类号： H04B10/611 , H04B10/616
摘要： One coherent optical receiver includes a 3×3 coupler for receiving a signal and a local oscillator into a first and a third input port respectively, and three detectors for detecting a respective output of the coupler to generate corresponding first, second and third detected signals. A detected signal is filtered by an Alternating Current (AC) coupler to generate a respective first, second or third filtered signal. An adder adds the first, the second and the third filtered signals to determine a directly detected signal term. A first subtractor subtracts the directly detected signal term from the first filtered signal to determine an in-phase signal. A second subtractor subtracts the directly detected signal term from the third filtered signal to determine a quadrature signal. A digital signal processor processes the in-phase signal and the quadrature signal to recover the optical signal.
摘要翻译：一个相干光接收机包括一个3×3耦合器，用于分别将信号和本地振荡器接收到第一和第三输入端口，以及三个检测器，用于检测耦合器的相应输出以产生对应的第一，第二和第三检测信号。检测信号由交流电耦合器滤波以产生相应的第一，第二或第三滤波信号。加法器将第一，第二和第三滤波信号相加以确定直接检测的信号项。第一减法器从第一滤波信号中减去直接检测的信号项，以确定同相信号。第二个减法器从第三个滤波信号中减去直接检测的信号项，以确定正交信号。数字信号处理器处理同相信号和正交信号以恢复光信号。

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