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11. 发明授权

US07308169B2 Optical equalizer for intersymbol interference mitigation 有权
标题翻译：用于符号间干扰减轻的光均衡器
公开(公告)号：US07308169B2
公开(公告)日：2007-12-11
申请号：US10922690
申请日：2004-08-19
申请人： Sethumadhavan Chandrasekhar , Andrew R. Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
发明人： Sethumadhavan Chandrasekhar , Andrew R. Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
IPC分类号： G02B6/26
CPC分类号： H04B10/2507 , G02B6/266 , H04J14/0221
摘要： A multi-channel optical equalizer for intersymbol interference mitigation compensates for single- or multi-wavelength channels simultaneously and requires few adjustable parameters. The optical equalizer also compensates for overshoots and signal transition degradations in semiconductor optical amplifiers. The equalizer unit uses one control signal for magnitude and one to control signal phase. The equalizer includes a controllable coupling ratio coupler for splitting the light into two portions and a controllable interferometer having two arms, one arm having an additional delay which is equal to an integer multiple of 1/Δf, where Δf is the channel spacing between adjacent wavelengths utilized in the optical system. The controllable interferometer has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal. A multistage optical equalizer is implemented using a plurality of optical signal equalizers.
摘要翻译：用于符号间干扰减轻的多通道光学均衡器同时补偿单波长或多波长通道，并且需要很少的可调参数。光学均衡器还补偿半导体光放大器中的过冲和信号转换劣化。均衡器单元使用一个控制信号的幅度和一个来控制信号相位。均衡器包括可控耦合比耦合器，用于将光分成两部分，以及具有两个臂的可控干涉仪，一个臂具有等于1 / Deltaf的整数倍的附加延迟，其中Deltaf是相邻波长之间的信道间隔用于光学系统。可控干涉仪在第一或第二臂中具有可控制的延迟，用于调节通过其中的光的相对相位。耦合器组合来自第一和第二臂的两个信号部分以形成均衡的输出信号。使用多个光信号均衡器来实现多级光学均衡器。

12. 发明授权

US06804434B1 Multi-channel optical equalizer for intersymbol interference mitigation 有权
标题翻译：用于符号间干扰减轻的多通道光均衡器
公开(公告)号：US06804434B1
公开(公告)日：2004-10-12
申请号：US10735176
申请日：2003-12-12
申请人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
发明人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
IPC分类号： G02B626
CPC分类号： H04B10/1149 , G02B6/266 , H04B10/2507 , H04J14/0221
摘要： A multi-channel optical equalizer for intersymbol interference mitigation compensates for single- or multi- wavelength channels simultaneously and requires few adjustable parameters. The optical equalizer compensates for overshoots and signal transition degradations in semiconductor optical amplifiers. The equalizer unit uses one control signal for magnitude and one to control signal phase. The equalizer includes a controllable coupling ratio coupler for splitting the light into two portions and a controllable interferometer having two arms, one arm having an additional delay which is equal to an integer multiple of 1/&Dgr;f, where &Dgr;f is the channel spacing between adjacent wavelengths utilized in the optical system. The controllable interferometer has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal.
摘要翻译：用于符号间干扰减轻的多通道光学均衡器同时补偿单波长或多波长通道，并且需要很少的可调参数。光学均衡器补偿半导体光放大器中的过冲和信号转换劣化。均衡器单元使用一个控制信号的幅度和一个来控制信号相位。均衡器包括可控耦合比耦合器，用于将光分成两部分，以及具有两个臂的可控干涉仪，一个臂具有等于1 / Deltaf的整数倍的附加延迟，其中Deltaf是相邻波长之间的信道间隔用于光学系统。可控干涉仪在第一或第二臂中具有可控制的延迟，用于调节通过其中的光的相对相位。耦合器组合来自第一和第二臂的两个信号部分以形成均衡的输出信号。

13. 发明授权

US09172461B2 Optical fibers with varied mode-dependent loss 有权
标题翻译：具有不同模式依赖性损失的光纤
公开(公告)号：US09172461B2
公开(公告)日：2015-10-27
申请号：US13730131
申请日：2012-12-28
申请人： Peter J. Winzer , Kyle C. Guan , Emina Soljanin
发明人： Peter J. Winzer , Kyle C. Guan , Emina Soljanin
IPC分类号： G02B6/26 , H04B10/07 , G02B6/02
CPC分类号： H04B10/0705 , G02B6/02042 , G02B6/02342
摘要： Various embodiments provide for detection of tapping of an optical signal. In one embodiment an optical fiber includes a cladding region and first and second core regions. The first core region has a first core medium having a first mode-dependent loss (MDL) figure of merit. The second core region has a second core medium having a second different MDL figure of merit. Tapping of the optical signal may be determined to occur when the MDL of the first and second optical signals differs by a predetermined threshold value.
摘要翻译：各种实施例提供了检测光信号的敲击。在一个实施例中，光纤包括包层区域和第一和第二核心区域。第一核心区域具有第一核心介质，其具有第一模式相关损耗（MDL）品质因数。第二核心区域具有具有第二不同MDL品质因数的第二核心介质。当第一和第二光信号的MDL相差预定阈值时，可以确定发生光信号的敲击。

14. 发明授权

US09077482B2 High-throughput routing in an optical network having a mesh topology 有权
标题翻译：具有网格拓扑的光网络中的高吞吐量路由
公开(公告)号：US09077482B2
公开(公告)日：2015-07-07
申请号：US13852328
申请日：2013-03-28
申请人： Peter J. Winzer , Kodialam Murali , Tirunell V. Lakshman
发明人： Peter J. Winzer , Kodialam Murali , Tirunell V. Lakshman
IPC分类号： H04J14/02 , H04L12/721 , H04L12/715 , H04L12/727
CPC分类号： H04J14/0284 , H04J14/0201 , H04J14/0227 , H04J14/0257 , H04J14/0267 , H04L45/121 , H04L45/62 , H04L45/64
摘要： An optical routing scheme in which an optical network having a mesh topology is configured to route optical packets through an optical routing layout superimposable with the mesh topology, but having a star-like topology. Using this routing layout, the optical network can be configured to transport optical packets from respective ingress nodes, through the hub node located at the star center, to respective egress nodes in a manner that enables a data throughput that approaches the theoretical capacity. No special hardware is required for implementing the hub functionality, and any node of the optical network can be configured to serve as the hub node. The latter feature enables relatively straightforward optimization of the optical routing layout and transmission schedule, e.g., by changing the identity of the hub node and adjusting the transmission schedule at the ingress nodes to synchronize packet arrivals to the hub node.
摘要翻译：一种光路由方案，其中具有网状拓扑的光网络被配置为通过与网状拓扑重叠但具有星形拓扑的光路由布局路由光分组。使用该路由布局，光网络可以被配置为以使得能够接近理论容量的数据吞吐量的方式将来自相应入口节点的光分组传输到位于星中心的集线器节点到相应出口节点。实现集线器功能不需要特殊硬件，光网络的任何节点都可以配置为集线器节点。后者的特征使得可以例如通过改变集线器节点的身份并调整入口节点处的传输调度以使分组到达中心到集线器节点而使光路由布局和传输调度相对简单的优化。

15. 发明授权

US08705913B2 Intra-link spatial-mode mixing in an under-addressed optical MIMO system 有权
标题翻译：在欠寻址光MIMO系统中的链路内空间模式混合
公开(公告)号：US08705913B2
公开(公告)日：2014-04-22
申请号：US13332968
申请日：2011-12-21
申请人： Peter J. Winzer , Gerard J. Foschini
发明人： Peter J. Winzer , Gerard J. Foschini
IPC分类号： G02B6/42
CPC分类号： G02B6/14 , H04B10/2581 , H04J14/04 , H04L1/004
摘要： The outage probability in an under-addressed optical MIMO system may be reduced by configuring an intra-link optical mode mixer to dynamically change the spatial-mode mixing characteristics of the link on a time scale that is faster than the channel coherence time. Provided that the MIMO system employs an FEC code that has a sufficient error-correcting capacity for correcting the amount of errors corresponding to an average state of the MIMO channel, this relatively fast dynamic change tends to reduce the frequency of events during which the number of errors per FEC-encoded block of data exceeds the error-correcting capacity of the FEC code.
摘要翻译：可以通过配置链路内模式混合器来在比信道相干时间快的时间尺度上动态地改变链路的空间模式混合特性来减少处理不足的MIMO系统中的中断概率。假设MIMO系统采用具有足够的纠错能力的FEC码，用于校正与MIMO信道的平均状态相对应的误差量，则这种相对较快的动态变化趋向于减少事件发生频率每个FEC编码的数据块的错误超过FEC码的纠错能力。

16. 发明申请

US20140086594A1 OPTICAL RECEIVER HAVING A SIGNAL-EQUALIZATION CAPABILITY 有权
标题翻译：具有信号均衡能力的光接收机
公开(公告)号：US20140086594A1
公开(公告)日：2014-03-27
申请号：US13628412
申请日：2012-09-27
申请人： Chongjin Xie , Peter J. Winzer , Stefan Weisser , Andreas Leven
发明人： Chongjin Xie , Peter J. Winzer , Stefan Weisser , Andreas Leven
IPC分类号： H04B10/06
CPC分类号： H04B10/6161 , H04B10/6162 , H04B10/6165
摘要： In one embodiment, an optical receiver has a bulk dispersion compensator and a butterfly equalizer serially connected to one another to perform dispersion-compensation processing and electronic polarization de-multiplexing. The bulk dispersion compensator has a relatively large dispersion-compensation capacity, but is relatively slow and operates in a quasi-static configuration. The butterfly equalizer has a relatively small dispersion-compensation capacity, but can be dynamically reconfigured on a relatively fast time scale to track the changing conditions in the optical-transport link. The optical receiver has a feedback path that enables the configuration of the bulk dispersion compensator to be changed based on the configuration of the butterfly equalizer in a manner that advantageously enables the receiver to tolerate larger amounts of chromatic dispersion and/or polarization-mode dispersion than without the use of the feedback path.
摘要翻译：在一个实施例中，光接收器具有彼此串联连接的体色散补偿器和蝶式均衡器，以执行色散补偿处理和电子偏振解复用。体积色散补偿器具有相对较大的色散补偿能力，但是相对较慢并且在准静态配置中操作。蝶形均衡器具有相对较小的色散补偿能力，但是可以在相对较快的时间尺度上动态地重新配置以跟踪光传输链路中的变化条件。光接收机具有反馈路径，其能够基于蝴蝶均衡器的配置来改变批量色散补偿器的配置，其有利地使得接收器容忍更大量的色散和/或偏振模色散比而不使用反馈路径。

17. 发明申请

US20140029957A1 FREQUENCY EQUALIZATION FOR AN OPTICAL TRANSMITTER 有权
标题翻译：用于光学发射机的频率均衡
公开(公告)号：US20140029957A1
公开(公告)日：2014-01-30
申请号：US13556635
申请日：2012-07-24
申请人： Chandrasekhar Sethumadhavan , Xiang Liu , Peter J. Winzer , Andrew Chraplyvy
发明人： Chandrasekhar Sethumadhavan , Xiang Liu , Peter J. Winzer , Andrew Chraplyvy
IPC分类号： H04B10/04
CPC分类号： H04B10/588
摘要： An optical transmitter configured to perform digital signal equalization directed at mitigating the detrimental effects of a frequency roll-off in the transmitter's optical I-Q modulator. In various embodiments, a frequency-dependent spectral-correction function used for the digital signal equalization can be constructed to cause the spectrum of the modulated optical signal generated by the transmitter to have a desired degree of flatness in the vicinity of an optical carrier frequency and/or to at least partially mirror the frequency roll-off in the optical I-Q modulator.
摘要翻译：一种光发射机，被配置为执行数字信号均衡，以减轻发射机的光学I-Q调制器中的频率滚降的有害影响。在各种实施例中，可以构造用于数字信号均衡的频率依赖频谱校正功能，以使由发射机产生的调制光信号的频谱在光载波频率附近具有期望的平坦度， /或至少部分地反映光学IQ调制器中的频率滚降。

18. 发明授权

US08571423B2 Receiver algorithms for coherent detection of polarization-multiplexed optical signals 有权
标题翻译：用于偏振复用光信号相干检测的接收机算法
公开(公告)号：US08571423B2
公开(公告)日：2013-10-29
申请号：US12642764
申请日：2009-12-18
申请人： Peter J. Winzer
发明人： Peter J. Winzer
IPC分类号： H04B10/00
CPC分类号： H04B10/6971 , H04J14/06
摘要： A digital signal processor (DSP) operating within, for example, an optical receiver wherein the DSP processes complex sample streams derived from a received digitally modulated optical signal, the DSP configured to perform a method comprising: using a filter adaptation algorithm (FAA), processing digitized complex sample streams for each of a sequence of unitary matrix different starting conditions associated with the FAA to establish a converged FAA.
摘要翻译：在例如光接收器中操作的数字信号处理器（DSP），其中DSP处理从接收到的数字调制光信号导出的复数采样流，被配置为执行包括以下的方法的DSP：使用滤波器适配算法（FAA）处理与FAA相关联的酉矩阵不同起始条件序列中的每一个的数字化复样本流，以建立融合FAA。

19. 发明授权

US08526831B2 Receiver algorithms for coherent detection of polarization-multiplexed optical signals 有权
标题翻译：用于偏振复用光信号相干检测的接收机算法
公开(公告)号：US08526831B2
公开(公告)日：2013-09-03
申请号：US12642762
申请日：2009-12-18
申请人： Peter J. Winzer
发明人： Peter J. Winzer
IPC分类号： H04B10/06
CPC分类号： H04J14/06 , H04B10/6971
摘要： A digital signal processor (DSP) operating within, for example, an optical receiver wherein the DSP processes complex sample streams derived from a received modulated optical signal, the DSP configured to perform a method comprising: processing at least one block of symbols within a complex symbol stream to define a received constellation having symbols located within decision boundaries; and verifying that the received constellation does not exhibit errors by comparing the received constellation to each of a sequence of reference constellations having corresponding phase shifts within an angular ambiguity range of the first constellation.
摘要翻译：在例如光接收器中操作的数字信号处理器（DSP），其中DSP处理从接收的调制光信号导出的复杂样本流，该DSP被配置为执行一种方法，包括：处理复合体内的至少一个符号块符号流以定义具有位于决策边界内的符号的接收星座; 以及通过将接收到的星座与在第一星座的角度模糊度范围内具有对应相移的参考星座序列中的每一个进行比较来验证所接收的星座不显示错误。

20. 发明申请

US20130071124A1 Coherent Optical Receivers For Colorless Reception 有权
标题翻译：用于无色接收的相干光接收机
公开(公告)号：US20130071124A1
公开(公告)日：2013-03-21
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： H04B10/06
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分别用于将信号和本地振荡器分别接收到第一和第三输入端口的3×3耦合器，以及用于检测耦合器的相应输出以产生相应的第一，第二和第三检测信号的三个检测器。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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