专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20120170929A1 Apparatus And Method For Monitoring An Optical Coherent Network 审中-公开
标题翻译：用于监测光相干网络的装置和方法
公开(公告)号：US20120170929A1
公开(公告)日：2012-07-05
申请号：US12983419
申请日：2011-01-03
申请人： Chongjin Xie , Robert William Tkach
发明人： Chongjin Xie , Robert William Tkach
IPC分类号： H04B10/08 , H04B17/00
CPC分类号： H04B10/07951 , H04B10/0793
摘要： An example method determines at an optical network monitoring device whether a value for at least one parameter that characterizes an optical signal which traverses a link of an optical coherent network is above a corresponding threshold and sets an alarm indicator when the value is larger than the corresponding threshold. The at least one corresponding parameter is at least one of polarization mode dispersion, polarization dependent loss and chromatic dispersion. An example method may obtains the optical signal from the link of the coherent optical network and determines the value for the at least one parameter, which may entail calculating the value based on the optical signal and filter coefficients of a filter that can be utilized to compensate the optical signal. In another embodiment, the value for the at least one parameter is received from a monitoring unit that determined the value from the optical signal
摘要翻译：示例性方法在光网络监视设备处确定表征穿过光相干网络的链路的光信号的至少一个参数的值是否高于相应的阈值，并且当该值大于相应的阈值时设置报警指示符阈。所述至少一个对应参数是偏振模色散，偏振相关损耗和色散中的至少一个。一个示例性方法可以从相干光网络的链路获得光信号，并且确定至少一个参数的值，其可能需要基于可用于补偿的滤波器的光信号和滤波器系数来计算该值光信号。在另一个实施例中，从确定来自光信号的值的监视单元接收至少一个参数的值

42. 发明申请

US20120002979A1 Method And Apparatus For Polarization-Division-Multiplexed Optical Receivers 有权
标题翻译：用于偏振分复用光接收机的方法和装置
公开(公告)号：US20120002979A1
公开(公告)日：2012-01-05
申请号：US12827473
申请日：2010-06-30
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： H04B10/06
CPC分类号： H04B10/611 , H04B10/614 , H04B10/6162
摘要： An optical receiver includes a two-stage constant modulus algorithm (CMA) equalizer. The first stage is a modified version of a CMA equalizer and the second stage is 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 compensates for polarization-mode dispersion (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). The receiver includes a first processor that determines PMD information based on a plurality of transfer function parameters of the modified CMA equalization of the first stage equalizer and the modified-equalized output and a second processor that determines PDL based on a plurality of transfer function parameters of the CMA equalization of the second stage equalizer.
摘要翻译：光接收机包括两级恒模算法（CMA）均衡器。第一阶段是CMA均衡器的修改版本，第二阶段是传统的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。该第一级均衡器补偿偏振模色散（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。该第二级均衡器可以补偿偏振相关损耗（PDL）。接收机包括：第一处理器，其基于第一级均衡器和修改均衡输出的修改的CMA均衡的多个传递函数参数确定PMD信息;以及第二处理器，其基于多个传输函数参数来确定PDL 第二级均衡器的CMA均衡。

43. 发明申请

US20120002283A1 METHOD AND APPARATUS FOR RAMAN CO-PUMPS 审中-公开
标题翻译：拉曼共泵的方法和装置
公开(公告)号：US20120002283A1
公开(公告)日：2012-01-05
申请号：US12828229
申请日：2010-06-30
申请人： Chongjin Xie , Chandrasekhar Sethumadhavan , Robert William Tkach
发明人： Chongjin Xie , Chandrasekhar Sethumadhavan , Robert William Tkach
IPC分类号： G02B27/10 , G02B27/28 , H01S3/13
摘要： An example Raman co-pump apparatus includes a control module for controlling output received from at least one of a first laser and a second laser, said output of said first laser and said second laser for combining into a co-pump output, wherein the control module is configured to increase a frequency difference between said first laser and said second laser. The apparatus may also include at least one of a first laser for providing a first output, a second laser for providing a second output and a polarization beam combiner for combining the first and second output into the co-pump output. Spectral overlap of orthogonally polarized pump lasers is avoided via: 1) control of the frequency (wavelength) interleave and the mode spacing of co-pump lasers; 2) control of frequency (wavelength) offset of co-pump lasers to reduce spectral overlap; and 3) use a single co-pump laser with large mode spacing.
摘要翻译：示例性拉曼共泵装置包括控制模块，用于控制从第一激光器和第二激光器中的至少一个接收的输出，所述第一激光器的所述输出和所述第二激光器组合成共泵输出，其中控制器模块被配置为增加所述第一激光器和所述第二激光器之间的频率差。该装置还可以包括用于提供第一输出的第一激光器，用于提供第二输出的第二激光器和用于将第一和第二输出组合到共泵输出中的偏振光束组合器中的至少一个。通过以下方式避免正交极化泵浦激光器的光谱重叠：1）控制共泵浦激光器的频率（波长）交错和模式间隔; 2）控制共泵浦激光器的频率（波长）偏移，减少光谱重叠; 和3）使用单模间距大的单泵激光器。

44. 发明授权

US08005360B2 PMDC feedback signal for alternate polarization DPSK system 有权
标题翻译：用于交替极化DPSK系统的PMDC反馈信号
公开(公告)号：US08005360B2
公开(公告)日：2011-08-23
申请号：US12185944
申请日：2008-08-05
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： H04B10/00 , H04B10/04 , H04B10/12 , H04J14/02 , H04J14/06
CPC分类号： H04B10/2569
摘要： A feedback signal indicative of the average RF power of an APol-DPSK optical signal is used by a PMD compensator to adjust the amount of compensation applied to the optical signal.
摘要翻译：指示APol-DPSK光信号的平均RF功率的反馈信号由PMD补偿器使用以调整施加到光信号的补偿量。

45. 发明申请

US20100150555A1 Automatic polarization demultiplexing for polarization division multiplexed signals 审中-公开
标题翻译：用于偏振分复用信号的自动偏振解复用
公开(公告)号：US20100150555A1
公开(公告)日：2010-06-17
申请号：US12316432
申请日：2008-12-12
申请人： Zinan Wang , Chongjin Xie
发明人： Zinan Wang , Chongjin Xie
IPC分类号： H04J14/06
CPC分类号： H04J14/06
摘要： Method and apparatus are provided for polarization demultiplexing for a Polarization Division Multiplexed (PDM) signal stream in the optical domain. The optical PDM signal stream includes a first channel representing a first data stream and a second channel representing a second data stream, a time delay between the first channel and the second channel. A Polarization Beam Splitter (PBS) demultiplexes an optical PDM signal into the first channel and the second channel. An associated processing block obtains one of the channels and provides a Polarization Controller with for a control signal corresponding to the power level of the low frequency portion of the RF spectrum of the channel obtained. Based on the control signal, the Polarization Controller adjusts a state of polarization of the optical PDM signal stream that is provided to the PBS for demultiplexing.
摘要翻译：为光域中的偏振分复用（PDM）信号流提供偏振解复用的方法和装置。光PDM信号流包括表示第一数据流的第一通道和表示第二数据流的第二通道，第一通道和第二通道之间的时间延迟。偏振光束分离器（PBS）将光学PDM信号解复用到第一通道和第二通道中。相关联的处理块获得一个通道，并向极化控制器提供与获得的通道的RF频谱的低频部分的功率电平对应的控制信号。基于控制信号，极化控制器调整提供给PBS的光PDM信号流的偏振状态以进行解复用。

46. 发明申请

US20090324224A1 System, method and apparatus to suppress inter-channel nonlinearities in WDM systems with coherent detection 审中-公开
标题翻译：用于抑制具有相干检测的WDM系统中的信道间非线性的系统，方法和装置
公开(公告)号：US20090324224A1
公开(公告)日：2009-12-31
申请号：US12215796
申请日：2008-06-30
申请人： Chongjin Xie
发明人： Chongjin Xie
IPC分类号： H04J14/02 , H04J14/06
CPC分类号： H04B10/61 , H04B10/60 , H04B10/6161 , H04B10/6162 , H04B10/6163
摘要： For optical communications, apparatus and methods are provided for performing dispersion compensation management that suppresses intra-channel nonlinearities, inter-channel cross-phase modulation (XPM) and/or nonlinear polarization scattering. In optical communication, in which wavelength division multiplexed (WDM) channels are modulated, detecting and measuring channels with coherent detection is complicated due to impairments caused by neighboring channels. Apparatus and methods are provided which reduce the effect of impairments by performing in-line Periodic Group Delay (PGD) dispersion compensation on a WDM signal so as to enable detection of individual channels without severe degradation of system performance. Preferably the PGD dispersion compensator has within a channel a chromatic dispersion substantially similar to a DCF and between channels the group delay is substantially similar.
摘要翻译：对于光通信，提供了用于执行抑制信道内非线性，信道间相位调制（XPM）和/或非线性偏振散射的色散补偿管理的装置和方法。在波分复用（WDM）信道被调制的光通信中，由相邻信道造成的损伤，具有相干检测的检测和测量信道复杂。提供了通过对WDM信号执行在线周期性群延迟（PGD）色散补偿来减少损伤的影响的装置和方法，以便能够在不严重降低系统性能的情况下检测各个通道。优选地，PGD色散补偿器在通道内具有基本上类似于DCF的色散，并且在通道之间，群延迟基本相似。

47. 发明授权

US07613402B2 Duobinary receiver 有权
标题翻译：二元接收器
公开(公告)号：US07613402B2
公开(公告)日：2009-11-03
申请号：US10730413
申请日：2003-12-08
申请人： Xiang Liu , Lothar Benedict Erhard Josef Moeller , Xing Wei , Chongjin Xie
发明人： Xiang Liu , Lothar Benedict Erhard Josef Moeller , Xing Wei , Chongjin Xie
IPC分类号： H04B10/06
CPC分类号： H04L25/068 , H04B10/69 , H04L7/042 , H04L25/4923
摘要： An optical receiver adapted to process 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. The decoder processes an electrical signal generated by the converter to generate a bit sequence corresponding to the optical signal. To generate a bit value, the decoder integrates the electrical signal using a sampling window and compares the integration result with a decision threshold value. In one configuration, the width of the sampling window and the decision threshold value are selected based on the eye diagram and noise distribution function, respectively, corresponding to the optical signal. Advantageously, embodiments of the present invention improve overall back-to-back (i.e., source-to-destination) system performance, e.g., by improving dispersion tolerance and/or reducing optical power corresponding to a selected bit error rate value.
摘要翻译：一种适于处理在光通信系统中通过传输链路接收的光双二进制信号的光接收机。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。解码器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，解码器使用采样窗口对电信号进行积分，并将积分结果与判定阈值进行比较。在一种配置中，分别基于对应于光信号的眼图和噪声分布函数来选择采样窗口的宽度和判定阈值。有利地，本发明的实施例例如通过改善对应于所选位错误率值的色散容限和/或减少光功率来改进整体背靠背（即源到目的地）系统性能。

48. 发明授权

US07330663B2 PMD-reduction processing for a multi-channel receiver 有权
标题翻译：用于多通道接收机的PMD减少处理
公开(公告)号：US07330663B2
公开(公告)日：2008-02-12
申请号：US10425432
申请日：2003-04-29
申请人： Randy C. Giles , Xiang Liu , Chongjin Xie
发明人： Randy C. Giles , Xiang Liu , Chongjin Xie
IPC分类号： H04B10/12
CPC分类号： H04B10/2569 , H04J14/02
摘要： A multi-channel (e.g. WDM) receiver, in which l PMD compensators are time-shared by n (n>1) communication channels, where 1≦l≦n−1. The receiver implements PMD monitoring to identify channels exhibiting relatively high amounts of PMD. Some or all of the identified channels are then subjected, before decoding, to PMD-reduction processing, while the remaining channels are decoded without such processing. Channel allocation for the processing may be changed dynamically depending on the current amounts of PMD exhibited by various channels. Due to efficient utilization of PMD compensators, multi-channel receivers of the invention are capable of performance comparable to that of the corresponding fully compensated (i.e., having a dedicated PMD compensator for each channel) receivers, but at appreciably lower cost.
摘要翻译：多通道（例如WDM）接收机，其中1个PMD补偿器由n（n> 1）个通信信道共享，其中1≤l≤n-1。接收机实现PMD监测，以识别显示相对较高量的PMD的信道。然后在解码之前将所识别的一些或全部信道进行PMD减少处理，而在不进行这种处理的情况下对其余信道进行解码。用于处理的信道分配可以根据各种信道所呈现的PMD的当前量而动态地改变。由于PMD补偿器的有效利用，本发明的多通道接收机能够与相应的完全补偿（即，具有用于每个通道的专用PMD补偿器）接收机的性能相当，但成本明显较低。

49. 发明授权

US07010180B2 System and method for multi-channel mitigation of PMD/PDL/PDG 有权
标题翻译： PMD / PDL / PDG的多通道缓解系统和方法
公开(公告)号：US07010180B2
公开(公告)日：2006-03-07
申请号：US10639824
申请日：2003-08-13
申请人： Adriaan J. de Lind van Wijngaarden , Xiang Liu , Chongjin Xie
发明人： Adriaan J. de Lind van Wijngaarden , Xiang Liu , Chongjin Xie
IPC分类号： G02B6/00
CPC分类号： H04B10/2569 , H04B2210/256
摘要： A system and method for multi-channel PMD/PDL/PDG mitigation, the system including polarization scramblers adapted to vary the state of polarization of an optical signal propagated through the system to effectively vary the polarization mode dispersion experienced by the signal during each burst-error-correcting-period of the forward error correction used in the system.
摘要翻译：一种用于多通道PMD / PDL / PDG减轻的系统和方法，所述系统包括偏振加扰器，其适于改变通过系统传播的光信号的偏振状态，以有效地改变在每个突发脉冲期间由信号经历的偏振模色散，系统中使用的前向纠错误差校正周期。

50. 发明申请

US20050201762A1 Optical RZ-duobinary transmission system with narrow bandwidth optical filter 审中-公开
标题翻译：具有窄带宽光学滤波器的光学RZ-双二进制传输系统
公开(公告)号：US20050201762A1
公开(公告)日：2005-09-15
申请号：US10799101
申请日：2004-03-12
申请人： Lothar Benedict Moeller , Chongjin Xie
发明人： Lothar Benedict Moeller , Chongjin Xie
IPC分类号： H04B10/06
CPC分类号： H04B10/5167 , H04B10/5162
摘要： Simultaneous tolerance of system nonlinearities and chromatic dispersion in an optical transmission system using return-to-zero (RZ) duobinary signaling is achieved by filtering the received signal in the optical domain with a bandpass filter having a bandwidth B substantially equal to the bit-rate of the RZ-duobinary data signal. The use of an optical bandpass filter in a receiver for RZ-duobinary signals maintains the expected tolerance of system nonlinearities and simultaneously increases significantly the chromatic dispersion tolerance of the signals.
摘要翻译：使用归零（RZ）双向信令的光传输系统中的系统非线性和色散的同时容限是通过带宽B基本上等于比特率的带通滤波器对光域中的接收信号进行滤波来实现的的RZ-双二进制数据信号。在用于RZ-双二进制信号的接收机中使用光学带通滤波器保持系统非线性的预期公差，并且同时显着增加信号的色散容限。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式