公开(公告)号：US07515543B2

公开(公告)日：2009-04-07

申请号：US11018282

申请日：2004-12-21

申请人： Harsha S. Nagesh ,  Viswanath Poosala ,  Sudipta Sengupta ,  Peter J. Winzer

发明人： Harsha S. Nagesh ,  Viswanath Poosala ,  Sudipta Sengupta ,  Peter J. Winzer

IPC分类号： H04J1/16

CPC分类号： H04J3/1617 ,  H04J2203/0083 ,  H04J2203/0094 ,  H04L47/10 ,  H04L47/125 ,  H04L47/283 ,  H04L47/34

摘要： A load-balanced network architecture is disclosed in which a traffic flow deliverable from a source node to a destination node via intermediate nodes is split into parts, and the parts are distributed to respective ones of the intermediate nodes. Path delay differences for the parts are substantially equalized by delay adjustment at one or more of the intermediate nodes, and packets of one or more of the parts are scheduled for routing from respective ones of the intermediate nodes to the destination node based on arrival times of the packets at the source node.

摘要翻译： 公开了一种负载平衡的网络架构，其中经由中间节点从源节点传递到目的地节点的业务流被分割成部分，并且将部分分配到相应的中间节点。 通过在一个或多个中间节点处的延迟调整基本上均衡部件的路径延迟差异，并且调度部分中的一个或多个的分组基于从中间节点中的相应节点到目的地节点的分组，基于到达时间 源节点上的数据包。

公开(公告)号：US07474860B2

公开(公告)日：2009-01-06

申请号：US11306174

申请日：2005-12-19

申请人： Rene Jean Essiambre ,  Michael Rubsamen ,  Peter J. Winzer

发明人： Rene Jean Essiambre ,  Michael Rubsamen ,  Peter J. Winzer

IPC分类号： H04B10/06

CPC分类号： H04L25/03178 ,  H04B10/66

摘要： In an over-sampled maximum-likelihood sequence estimation (MLSE) receiver system, the optimal sample spacing is determined for a variety of conditions. In an illustrative implementation, the system includes an optical filter for tightly filtering an incoming optical data signal with an on-off-keying (OOK) non-return-to-zero (NRZ) format, followed by an optical-to-electrical converter, an electrical filter, a sampler, and a MLSE receiver. The sampler samples the filtered electrical data signal twice each bit period with unequal sample spacings. For wide optical filtering bandwidths, the optimal sample spacing occurs at less than 50% of a bit period. For narrow bandwidths, the optimal sample instances occur closer to the maximum eye opening.

摘要翻译： 在过采样的最大似然序列估计（MLSE）接收机系统中，针对各种条件确定最佳采样间隔。 在说明性实施方案中，该系统包括用于使用开关键（OOK）不归零（NRZ）格式紧密地滤波输入的光数据信号的光学滤波器，随后是光 - 电转换器 ，电气滤波器，采样器和MLSE接收器。 采样器以不相等的样本间隔对滤波后的电数据信号采样两次，每个位周期。 对于宽光学滤波带宽，最佳采样间隔发生在小于位周期的50％。 对于窄带宽，最佳采样实例更接近最大眼睛开度。

公开(公告)号：US07269356B2

公开(公告)日：2007-09-11

申请号：US10615701

申请日：2003-07-09

申请人： Peter J. Winzer

发明人： Peter J. Winzer

IPC分类号： H04B10/14

CPC分类号： H04B10/64 ,  H04B10/60 ,  H04B10/63 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/021

摘要： An add-side laser in an optical device, such as an add/drop multiplexer OADM, provides not only a source for an add-side wavelength to be added to an output of the device, but also a reference for a receive-side coherent receiver that is included in the optical device.

摘要翻译： 诸如分插复用器OADM的光学装置中的附加激光器不仅提供要添加到装置的输出的附加波长的源，而且还提供用于接收侧相干的参考 包含在光学装置中的接收器。

公开(公告)号：US20170187458A1

公开(公告)日：2017-06-29

申请号：US14982111

申请日：2015-12-29

申请人： Peter J. Winzer ,  John Edward Simsarian

发明人： Peter J. Winzer ,  John Edward Simsarian

IPC分类号： H04B10/2507 ,  H04B10/80 ,  H04B10/077

CPC分类号： H04B10/2572 ,  H04B10/077 ,  H04B10/0773 ,  H04B10/07951 ,  H04B10/802

摘要： An apparatus includes a polarization beam splitter (PBS) and an optical detector. The PBS is configured to receive a polarized optical signal transported via an optical communication path of an optical network. The detector is configured to receive from the PBS a first polarization component of the optical signal, and to produce a first electrical measure of the first polarization component. A processor is configured to determine a dynamic metric of the optical communication path based at least on the first electrical measure. Some embodiments also include a second detector configured to receive from the PBS a second polarization component of the optical signal. The second detector produces a second electrical measure of the second polarization component, and the processor is configured to determine the dynamic metric based on both the first and second electrical measures.

公开(公告)号：US08913899B2

公开(公告)日：2014-12-16

申请号：US12961677

申请日：2010-12-07

申请人： David T. Neilson ,  Peter J. Winzer

发明人： David T. Neilson ,  Peter J. Winzer

IPC分类号： H04B10/00 ,  H04J14/02 ,  H04B10/61 ,  H04B10/2587

CPC分类号： H04B10/61 ,  H04B10/2587

摘要： An optical-power-distribution (OPD) subsystem that provides means for supplying optical local-oscillator signals and optical-carrier signals to various optical line cards, without the need for each optical line card to have a corresponding individual laser source. In one embodiment, a single laser coupled to the OPD subsystem provides optical local-oscillator signals and optical-carrier signals to multiple optical line cards. In another embodiment, multiple lasers coupled to the OPD subsystem provide multiple optical local-oscillator signals and optical-carrier signals to a single line card. An OPD subsystem may provide significant power savings in the operation of the corresponding optical transport system, a reduction in the required equipment-cooling capacity, and an increase in the device-packing density within optical line cards and inside equipment cabinets that house optical line cards.

摘要翻译： 光功率分配（OPD）子系统，其提供用于向各种光线路卡提供光本地振荡器信号和光载波信号的装置，而不需要每个光线路卡具有相应的单独的激光源。 在一个实施例中，耦合到OPD子系统的单个激光器向多个光线路卡提供光本地振荡器信号和光载波信号。 在另一个实施例中，耦合到OPD子系统的多个激光器向单个线路卡提供多个光学本地振荡器信号和光载波信号。 OPD子系统可以在相应的光学传输系统的操作中提供显着的功率节省，所需的设备冷却能力的降低，以及在容纳光学线路卡的光线路卡和内部设备机柜中的设备密封密度的增加 。

公开(公告)号：US20130243426A1

公开(公告)日：2013-09-19

申请号：US13887594

申请日：2013-05-06

申请人： Peter J. Winzer

发明人： Peter J. Winzer

IPC分类号： H04B10/07

CPC分类号： H04B10/07 ,  H04B10/2581 ,  H04J14/04

摘要： An apparatus includes a digital data transmitter capable of sequentially exciting different sets of one or more propagation modes in a physical communication channel. Each set of one or more propagation modes has a different spatial distribution of transmitted energy in the channel. The digital data transmitter is configured to sequentially change the excited set of one or more propagation triodes to transmit a different value of data to the communication channel.

摘要翻译： 一种装置包括能够在物理通信信道中顺序激励不同组的一个或多个传播模式的数字数据发射机。 每组一个或多个传播模式在通道中具有不同的发射能量的空间分布。 数字数据发射器被配置为顺序地改变一个或多个传播三极管的激发组，以将不同的数据值发送到通信信道。

公开(公告)号：US08457216B2

公开(公告)日：2013-06-04

申请号：US12751442

申请日：2010-03-31

申请人： Peter J. Winzer

发明人： Peter J. Winzer

IPC分类号： H04L27/00

CPC分类号： H04B10/07 ,  H04B10/2581 ,  H04J14/04

摘要： An apparatus includes a digital data transmitter capable of sequentially exciting different sets of one or more propagation modes in a physical communication channel. Each set of one or more propagation modes has a different spatial distribution of transmitted energy in the channel. The digital data transmitter is configured to sequentially change the excited set of one or more propagation modes to transmit a different value of data to the communication channel.

摘要翻译： 一种装置包括能够在物理通信信道中顺序激励不同组的一个或多个传播模式的数字数据发射机。 每组一个或多个传播模式在通道中具有不同的发射能量的空间分布。 数字数据发射机被配置为顺序地改变一个或多个传播模式的激励集合以将不同的数据值发送到通信信道。

公开(公告)号：US08320769B2

公开(公告)日：2012-11-27

申请号：US12492399

申请日：2009-06-26

申请人： Rene′-Jean Essiambre ,  Roland Ryf ,  Peter J. Winzer

发明人： Rene′-Jean Essiambre ,  Roland Ryf ,  Peter J. Winzer

IPC分类号： H04B10/12 ,  H04B10/00

CPC分类号： H04J14/04 ,  G02B6/14 ,  G02B6/2817 ,  G02B6/2848 ,  G02B6/34 ,  H04B10/2581 ,  H04B10/677

摘要： An optical communication system having an optical transmitter and an optical receiver optically coupled via a multi-path fiber. The optical transmitter launches, into the multi-path fiber, an optical transverse-mode-multiplexed (TMM) signal having a plurality of independently modulated components by coupling each independently modulated component into a respective transverse mode of the multi-path fiber. The TMM signal undergoes inter-mode mixing in the multi-path fiber before being received by the optical receiver. The optical receiver processes the received TMM signal to reverse the effects of inter-mode mixing and recover the data carried by each of the independently modulated components.

摘要翻译： 一种光通信系统，具有通过多路径光纤光耦合的光发射机和光接收机。 光发射机通过将每个独立调制的分量耦合到多径光纤的相应横向模式中，将具有多个独立调制分量的光学横向模式多路复用（TMM）信号发射到多径光纤中。 TMM信号在由光接收机接收之前在多路径光纤中进行模式间混合。 光接收器处理接收到的TMM信号以反转模式间混合的影响并恢复由每个独立调制的分量承载的数据。

公开(公告)号：US08295714B2

公开(公告)日：2012-10-23

申请号：US12642765

申请日：2009-12-18

申请人： Peter J. Winzer

发明人： Peter J. Winzer

IPC分类号： H04B10/06 ,  H04B10/148 ,  H04B10/158

CPC分类号： H04B10/611 ,  H04B10/60 ,  H04B10/613 ,  H04B10/614

摘要： A digital signal processor (DSP) operating within, for example, an optical receiver wherein the DSP processes complex sample streams derived from a modulated optical signal, the DSP configured to perform a method of acquiring an intermediate frequency (IF) signal from within the received optical signal, the method comprising: processing at least one block of complex sample stream symbols using a frequency locked loop (FLL) to achieve an initial constellation lock condition, the FLL having a nominal lock-in spectral region; if an initial constellation lock condition is not achieved within a predetermined amount of time, shifting the spectral region processed by the FLL to a spectral region proximate a current operating spectral region.

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处理从调制的光信号导出的复杂样本流，该DSP被配置为执行从接收到的信号中获取中频（IF）信号的方法 所述方法包括：使用频率锁定环（FLL）处理至少一个复杂采样流符号块以实现初始星座锁定状态，所述FLL具有标称锁定光谱区域; 如果在预定时间内没有实现初始星座锁定条件，则将由FLL处理的频谱区域移动到接近当前工作频谱区域的频谱区域。

公开(公告)号：US20120224861A1

公开(公告)日：2012-09-06

申请号：US13332588

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： H04B10/12

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 a spatial-mode coupler at a transmitter and/or a spatial-mode separator at a receiver to dynamically change its spatial-mode configuration on a time scale that is shorter 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 established between the transmitter and receiver, 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： 可以通过在接收机处的发射机和/或空间模式分离器处配置空间模式耦合器以在较短的时间尺度上动态地改变其空间模式配置来减少处理不足的光MIMO系统中的中断概率 比通道一致性时间。 假设MIMO系统采用具有足够的纠错能力的FEC码来校正与在发射机和接收机之间建立的MIMO信道的平均状态相对应的误差量，则该相对较快的动态变化趋向于降低频率 每个FEC编码的数据块的错误数量超过FEC码的纠错能力的事件。