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31. 发明授权

US08260153B2 Method and apparatus for polarization-division-multiplexed optical coherent receivers 有权
标题翻译：偏振分复用光学相干接收机的方法和装置
公开(公告)号：US08260153B2
公开(公告)日：2012-09-04
申请号：US12635129
申请日：2009-12-10
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： 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。

32. 发明授权

US07860406B2 PMD insensitive direct-detection optical OFDM systems using self-polarization diversity 有权
标题翻译：使用自偏振分集的PMD不敏感直接检测光OFDM系统
公开(公告)号：US07860406B2
公开(公告)日：2010-12-28
申请号：US11856002
申请日：2007-09-14
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： H04B10/04 , H04B10/06
CPC分类号： H04B10/2569 , H04B10/671
摘要： A self-polarization diversity technique to combat PMD in a direct-detection optical OFDM system. This technique does not require any dynamic polarization control, and can simultaneous compensate PMD in a WDM system with one device. Simulation results show that this technique virtually completely eliminates the PMD impairments in direct-detection optical OFDM systems.
摘要翻译：一种自偏振分集技术，用于在直接检测光OFDM系统中对抗PMD。该技术不需要任何动态极化控制，并且可以使用一个器件同时补偿WDM系统中的PMD。仿真结果表明，该技术实际上完全消除了直接检测光OFDM系统中的PMD损伤。

33. 发明授权

US07643761B2 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：US07643761B2
公开(公告)日：2010-01-05
申请号：US10782231
申请日：2004-02-19
申请人： Lothar Benedict Erhard Josef Moeller , Chongjin Xie
发明人： Lothar Benedict Erhard Josef Moeller , Chongjin Xie
IPC分类号： H04B10/06
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。

34. 发明授权

US07486895B2 Effective control algorithm for optical polarization mode dispersion compensators 有权
标题翻译：光偏振模色散补偿器的有效控制算法
公开(公告)号：US07486895B2
公开(公告)日：2009-02-03
申请号：US11301388
申请日：2005-12-13
申请人： Dieter Werner , Chongjin Xie
发明人： Dieter Werner , Chongjin Xie
IPC分类号： H04B10/12
CPC分类号： H04B10/2569
摘要： The present invention includes apparatus and method of a variable step size dithering control algorithm for polarization mode dispersion controllers (PMDCs). The dithering step size of the PCs is adjusted according to the feedback signal including degree of polarization (DOP).
摘要翻译：本发明包括用于偏振模色散控制器（PMDCs）的可变步长抖动控制算法的装置和方法。根据包括偏振度（DOP）的反馈信号来调节PC的抖动步长。

35. 发明授权

US07376353B2 Method and apparatus for dispersion management in optical mesh networks 有权
标题翻译：光网状网络中色散管理的方法和装置
公开(公告)号：US07376353B2
公开(公告)日：2008-05-20
申请号：US11018458
申请日：2004-12-21
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： H04B10/12 , H04B10/00
CPC分类号： H04B10/25137 , H04B2210/252 , H04B2210/254
摘要： A method and apparatus for dispersion management in hybrid data rate long haul mesh networks are provided. The apparatus comprises a dispersion compensator for fully compensating the residual dispersion of a fiber link in the mesh network. A de-interleaver is coupled to the dispersion compensator for de-interleaving odd and even channels of wavelength division multiplexed (WDM) signals transmitted across the fiber link. A delay device is coupled to the de-interleaver for introducing a delay to the odd channels or the even channels of the WDM signals to decorrelate the odd and even channels and substantially reduce inter-channel cross-phase modulation.
摘要翻译：提供了一种用于混合数据速率长途网状网络中的色散管理的方法和装置。该装置包括用于完全补偿网状网络中光纤链路的残余色散的色散补偿器。解交织器耦合到色散补偿器，用于解交织穿过光纤链路传输的波分复用（WDM）信号的奇数和偶数信道。延迟装置耦合到解交织器，用于将延迟引入到WDM信号的奇数信道或偶数信道，以对奇数和偶数信道去相关，并且基本上减少信道间相位调制。

36. 发明授权

US07336856B2 Optimum delay length for a PMD compensator 失效
标题翻译： PMD补偿器的最佳延迟长度
公开(公告)号：US07336856B2
公开(公告)日：2008-02-26
申请号：US10233638
申请日：2002-09-03
申请人： Herbert Haunstein , Chongjin Xie
发明人： Herbert Haunstein , Chongjin Xie
IPC分类号： G02B6/00
CPC分类号： G02B6/278 , H04B10/2569
摘要： A method for selecting an optimum delay length in a polarization mode dispersion (PMD) compensator configured with a constant-length delay line and deployed in an optical communication system. The optimum delay length depends on the data modulation format, bit rate, and/or signal bandwidth and is preferably selected such that outage probability in the communication system is at a minimum. System performance of a PMD compensator configured with a constant-length delay line having the optimum length approaches that of a PMD compensator configured with a variable-length delay line. The method extends the application range of constant-length delay line PMD compensators while reducing the cost of implementing high-performance PMD compensation.
摘要翻译：一种用于在配置有恒定长度延迟线并部署在光通信系统中的偏振模色散（PMD）补偿器中选择最佳延迟长度的方法。优选的延迟长度取决于数据调制格式，比特率和/或信号带宽，并且优选地选择使得通信系统中的中断概率最小。配置有具有最佳长度的恒定长度延迟线的PMD补偿器的系统性能接近配置有可变长度延迟线的PMD补偿器的系统性能。该方法延长了恒定延迟线PMD补偿器的应用范围，同时降低了实现高性能PMD补偿的成本。

37. 发明申请

US20070071454A1 Method and system for ultra-high bit rate fiber-optic communications 有权
标题翻译：超高比特率光纤通信的方法和系统
公开(公告)号：US20070071454A1
公开(公告)日：2007-03-29
申请号：US11239656
申请日：2005-09-29
申请人： Xiang Liu , Lothar Benedict Josef Moeller , Yikai Su , Chongjin Xie
发明人： Xiang Liu , Lothar Benedict Josef Moeller , Yikai Su , Chongjin Xie
IPC分类号： H04B10/04
CPC分类号： H04B10/5165 , H04B10/505 , H04B10/5162 , H04B10/5167 , H04L7/0075 , H04L7/027
摘要： A method and system for ultra-high bit rate fiber-optic communications (e.g., 160 Gb/s) utilize a phase-correlated modulation format where phases of bits in adjacent four-bit groups in transmitted optical pulse trains are altered by π (or 180°).
摘要翻译：用于超高比特率光纤通信（例如，160Gb / s）的方法和系统利用相位相关调制格式，其中传输的光脉冲串中的相邻四比特组中的比特的相位被pi（或 180°）。

38. 发明申请

US20060133817A1 Method and apparatus for dispersion management in optical mesh networks 有权
标题翻译：光网状网络中色散管理的方法和装置
公开(公告)号：US20060133817A1
公开(公告)日：2006-06-22
申请号：US11018458
申请日：2004-12-21
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： H04B10/00
CPC分类号： H04B10/25137 , H04B2210/252 , H04B2210/254
摘要： A method and apparatus for dispersion management in hybrid data rate long haul mesh networks are provided. The apparatus comprises a dispersion compensator for fully compensating the residual dispersion of a fiber link in the mesh network. A de-interleaver is coupled to the dispersion compensator for de-interleaving odd and even channels of wavelength division multiplexed (WDM) signals transmitted across the fiber link. A delay device is coupled to the de-interleaver for introducing a delay to the odd channels or the even channels of the WDM signals to decorrelate the odd and even channels and substantially reduce inter-channel cross-phase modulation.
摘要翻译：提供了一种用于混合数据速率长途网状网络中的色散管理的方法和装置。该装置包括用于完全补偿网状网络中光纤链路的残余色散的色散补偿器。解交织器耦合到色散补偿器，用于解交织穿过光纤链路传输的波分复用（WDM）信号的奇数和偶数信道。延迟装置耦合到解交织器，用于将延迟引入到WDM信号的奇数信道或偶数信道，以对奇数和偶数信道去相关，并且基本上减少信道间相位调制。

39. 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％。

40. 发明授权

US08355636B2 PMD insensitive direct-detection optical OFDM systems using self-polarization diversity 有权
标题翻译：使用自偏振分集的PMD不敏感直接检测光OFDM系统
公开(公告)号：US08355636B2
公开(公告)日：2013-01-15
申请号：US12947358
申请日：2010-11-16
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： H04B10/06
CPC分类号： H04B10/2569 , H04B10/671
摘要： A self-polarization diversity technique to combat PMD in a direct-detection optical OFDM system. This technique does not require any dynamic polarization control, and can simultaneous compensate PMD in a WDM system with one device. Simulation results show that this technique virtually completely eliminates the PMD impairments in direct-detection optical OFDM systems.
摘要翻译：一种自偏振分集技术，用于在直接检测光OFDM系统中对抗PMD。该技术不需要任何动态极化控制，并且可以使用一个器件同时补偿WDM系统中的PMD。仿真结果表明，该技术实际上完全消除了直接检测光OFDM系统中的PMD损伤。

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