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51. 发明授权

US09281900B2 Wavelength-tunable burst-mode receiver 有权
标题翻译：波长可调突发模式接收机
公开(公告)号：US09281900B2
公开(公告)日：2016-03-08
申请号：US14320196
申请日：2014-06-30
申请人： Alcatel-Lucent USA Inc.
发明人： Jurgen Gripp , John E Simsarian
IPC分类号： H04B10/06 , H04B10/60
CPC分类号： H04B10/611 , H04B10/613 , H04B10/6164 , H04B10/6166
摘要： An apparatus, e.g. an optical receiver, includes an optical front end and a processor. The optical front end is configured to coherently receive an input optical signal and convert the input optical signal to a digital-electrical data stream. The processor is configured to recover a data stream from the digital-electrical data stream. The processor is further configured to compare a correlation pattern of the recovered data stream with a pre-determined correlation pattern. The processor is further configured to determine, from the comparison, coefficients of a filter configured to recover data encoded on the input digital-electrical data stream.
摘要翻译：一种装置，例如光接收器包括光学前端和处理器。光学前端被配置为相干地接收输入光信号并将输入光信号转换成数字电数据流。处理器被配置为从数字电数据流恢复数据流。处理器还被配置为将恢复的数据流的相关模式与预定的相关模式进行比较。处理器还被配置为从比较中确定被配置为恢复在输入数字电数据流上编码的数据的滤波器的系数。

52. 发明申请

US20160036527A1 Method and System for Optical Impairment Mitigation for High-Speed Optical Communication Systems 有权
标题翻译：高速光通信系统光损伤减轻方法与系统
公开(公告)号：US20160036527A1
公开(公告)日：2016-02-04
申请号：US14884107
申请日：2015-10-15
申请人： AT&T Intellectual Property I, L.P.
发明人： Xiang Zhou
IPC分类号： H04B10/2513
CPC分类号： H04B10/2513 , H04B10/2575 , H04B10/516 , H04B10/61 , H04B10/6164 , H04B10/6165 , H04L25/03 , H04L25/0305
摘要： A method and system for simultaneous mitigation of optical impairment from both equalizer-phase noise interaction (EPNI) and fiber nonlinear effects (FNE) is disclosed. In one embodiment, the method is directed to simultaneous mitigation of optical impairment from both equalizer-phase noise interaction (EPNI) and fiber nonlinear effects (FNE) using a fast-adaptive multi-tap digital filter.
摘要翻译：公开了一种从均衡器相位噪声相互作用（EPNI）和光纤非线性效应（FNE）同时减轻光学损伤的方法和系统。在一个实施例中，该方法旨在使用快速自适应多抽头数字滤波器从均衡器相位噪声相互作用（EPNI）和光纤非线性效应（FNE）两者同时减轻光学损伤。

53. 发明申请

US20150311983A1 FREQUENCY OFFSET COMPENSATION APPARATUS AND FREQUENCY OFFSET COMPENSATION METHOD 有权
标题翻译：频率偏移补偿装置和频率偏移补偿方法
公开(公告)号：US20150311983A1
公开(公告)日：2015-10-29
申请号：US14651037
申请日：2013-12-11
申请人： NEC CORPORATION
发明人： Kohei HOSOKAWA , Yuichi NAKAMURA
IPC分类号： H04B10/61
CPC分类号： H04B10/6164
摘要： A frequency offset compensation apparatus includes: first FFT means for performing a discrete-time Fourier transform of an input signal; second FFT means for performing a discrete-time Fourier transform; and offset compensation means for changing an order of output data of the first FFT means according to a frequency offset compensation amount, and rearranging the output data, and then inputting the output data to the second FFT means. This makes possible a frequency offset compensation without needing a new complex multiplier or a new memory in optical communication.
摘要翻译：频偏补偿装置包括：第一FFT装置，用于执行输入信号的离散时间傅里叶变换; 用于执行离散时间傅里叶变换的第二FFT装置; 以及偏移补偿装置，用于根据频率偏移补偿量改变第一FFT装置的输出数据的顺序，并重新排列输出数据，然后将输出数据输入到第二FFT装置。这使得可以进行频偏补偿而不需要新的复数乘法器或光通信中的新存储器。

54. 发明授权

US09154231B2 Generation of an optical local-oscillator signal for a coherent-detection scheme 有权
标题翻译：生成用于相干检测方案的光学本地振荡器信号
公开(公告)号：US09154231B2
公开(公告)日：2015-10-06
申请号：US13743654
申请日：2013-01-17
申请人： Alcatel Lucent
发明人： Noriaki Kaneda
IPC分类号： H04B10/61 , H04B10/63
CPC分类号： H04B10/6164 , H04B10/611 , H04B10/6165 , H04B10/63
摘要： An optical receiver having an optical IQ modulator configured to generate an optical local-oscillator (OLO) signal for optical homodyne detection of an optical input signal applied to the optical receiver. The optical receiver further has (i) a phase detector configured to generate an electrical measure of the phase difference between the OLO signal and a carrier wave of the optical input signal and (ii) a phase-lock loop configured to drive the optical IQ modulator using the electrical measure. In an embodiment, the phase detector is configured to generate the electrical measure using both I and Q components of the homodyne-detected signal and in a manner that enables the optical receiver to be compatible with the M-QAM modulation format.
摘要翻译：一种具有光学IQ调制器的光接收机，被配置为产生光学本地振荡器（OLO）信号，用于光学零差检测施加到光接收器的光输入信号。光接收器还具有（i）相位检测器，被配置为产生OLO信号和光输入信号的载波之间的相位差的电测量，以及（ii）配置为驱动光学IQ调制器的锁相环使用电气措施。在一个实施例中，相位检测器被配置为使用零差检测信号的I和Q分量来产生电测量，并且使得光接收机能够与M-QAM调制格式兼容。

55. 发明授权

US09025969B2 Method with improved phase robustness in coherent detected optical system 有权
标题翻译：相干检测光学系统相位鲁棒性提高的方法
公开(公告)号：US09025969B2
公开(公告)日：2015-05-05
申请号：US13480230
申请日：2012-05-24
申请人： Chuandong Li , Yuanjie Chen , Zhuhong Zhang , Yi Cai , Fei Zhu
发明人： Chuandong Li , Yuanjie Chen , Zhuhong Zhang , Yi Cai , Fei Zhu
IPC分类号： H04B10/06 , H04B10/61
CPC分类号： H04B10/613 , H04B10/6164
摘要： An optical signal receiver tracks local oscillator frequency offset (LOFO) and compensates for the phase distortion introduced in the received signals as a result of utilizing the local oscillator within a coherent detection scheme. This phase distortion is basically a constant phase rotation caused by the LOFO and implementation of the receiver using coherent detection and a digital interferometer instead of a conventional (yet complex) carrier phase estimation or recovery scheme. With an optical receiver implemented in this manner, the requirement of using a precise local oscillator laser with low frequency offset is less important.
摘要翻译：光信号接收器跟踪本地振荡器频率偏移（LOFO），并且通过在相干检测方案中利用本地振荡器来补偿在接收信号中引入的相位失真。该相位失真基本上是由LOFO引起的恒定相位旋转和使用相干检测的接收机的实现以及数字干涉仪而不是常规（但复杂的）载波相位估计或恢复方案。通过以这种方式实现的光接收机，使用具有低频偏移的精确本地振荡器激光器的要求不那么重要。

56. 发明授权

US09014573B2 Processing data in an optical network element 有权
标题翻译：处理光网络元件中的数据
公开(公告)号：US09014573B2
公开(公告)日：2015-04-21
申请号：US13985532
申请日：2012-02-13
申请人： Harald Rohde , Thomas Treyer
发明人： Harald Rohde , Thomas Treyer
IPC分类号： H04B10/61 , H04B10/64 , H04B10/60
CPC分类号： H04B10/6164 , H04B10/60
摘要： A method for processing data in an optical network element are provided, wherein the optical network element comprises a local oscillator operating at a first frequency; wherein an incoming data stream is received at a second frequency; wherein the incoming data steam is processed using the first frequency; wherein a first pattern is searched in the incoming data stream; wherein a second pattern is searched in the incoming data stream; and wherein the first pattern corresponds to the first frequency being in the spectrum on one side of the second frequency and the second pattern corresponds to the first frequency being in the spectrum on the other side of the second frequency. Also, a corresponding optical network element and a communication system comprising at least one such optical network element are suggested.
摘要翻译：提供了一种用于处理光网络元件中的数据的方法，其中所述光网络元件包括以第一频率操作的本地振荡器; 其中以第二频率接收输入数据流; 其中所述输入数据蒸汽使用所述第一频率进行处理; 其中在所述输入数据流中搜索第一模式; 其中在所述输入数据流中搜索第二模式; 并且其中所述第一图案对应于所述第一频率在所述第二频率的一侧上的频谱中，并且所述第二图案对应于在所述第二频率的另一侧上的所述频谱中的所述第一频率。此外，提出了包括至少一个这样的光网络元件的对应的光网络元件和通信系统。

57. 发明申请

US20150063818A1 Method and System for Optical Impairments Mitigation for High-Speed Optical Communication Systems 有权
标题翻译：高速光通信系统光损伤方法与系统缓解
公开(公告)号：US20150063818A1
公开(公告)日：2015-03-05
申请号：US14017433
申请日：2013-09-04
申请人： AT&T Intellectual Property I, L.P.
发明人： Xiang Zhou
IPC分类号： H04B10/516 , H04L25/03 , H04B10/2575
CPC分类号： H04B10/2513 , H04B10/2575 , H04B10/516 , H04B10/61 , H04B10/6164 , H04B10/6165 , H04L25/03 , H04L25/0305
摘要： A method and system for simultaneous mitigation of optical impairment from both equalizer-phase noise interaction (EPNI) and fiber nonlinear effects (FNE) is disclosed. In one embodiment, the method is directed to simultaneous mitigation of optical impairment from both equalizer-phase noise interaction (EPNI) and fiber nonlinear effects (FNE) using a fast-adaptive multi-tap digital filter.
摘要翻译：公开了一种从均衡器相位噪声相互作用（EPNI）和光纤非线性效应（FNE）同时减轻光学损伤的方法和系统。在一个实施例中，该方法旨在使用快速自适应多抽头数字滤波器从均衡器相位噪声相互作用（EPNI）和光纤非线性效应（FNE）两者同时减轻光学损伤。

58. 发明申请

US20140369686A1 SYSTEMS AND METHODS FOR NOISE TOLERANT SIGNAL PROCESSING IN PILOT ASSISTED DATA RECEIVERS 有权
公开(公告)号：US20140369686A1
公开(公告)日：2014-12-18
申请号：US14476063
申请日：2014-09-03
申请人： Vladimir PELEKHATY , Michael Y. FRANKEL
发明人： Vladimir PELEKHATY , Michael Y. FRANKEL
IPC分类号： H04B10/61 , H04J14/06
CPC分类号： H04B10/6162 , H04B10/6164 , H04B10/6165 , H04J14/06
摘要： The present disclosure provides systems and methods for noise tolerant signal processing in a pilot assisted data receiver, including: given received pilots with common pilot components and individual pilot components, computing coefficients associated with the individual pilot components of the received pilots; and applying the computed coefficients to the received pilots to obtain conditioned pilots. The individual pilot components result from relatively slow changes of the received pilots relative to the common pilot components. The common pilot components result from relatively fast changes of the received pilots relative to the individual pilot components.

59. 发明申请

US20140328592A1 SIGNAL PROCESSING METHOD, OPTICAL RECEIVER AND OPTICAL NETWORK SYSTEM 有权
标题翻译：信号处理方法，光接收机和光网络系统
公开(公告)号：US20140328592A1
公开(公告)日：2014-11-06
申请号：US14331597
申请日：2014-07-15
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Lei ZHOU , Zhenxing LIAO , Zhenping WANG , Ning CHENG
IPC分类号： H04B10/61 , H04Q11/00
CPC分类号： H04B10/6164 , H04B10/61 , H04B10/615 , H04Q11/0067
摘要： A signal processing method, an optical receiver and optical network system is provided. The method includes: receiving a first optical signal sent by an optical network unit, generating a second optical signal and modulating a phase of the second optical signal, obtaining at least one path of electrical signals after the first optical signal and the second optical signal separately undergo polarization splitting, frequency mixing, and optical-electrical conversion, outputting a third electrical signal after performing operation processing on the at least one path of electrical signals, and restoring a data signal according to the third electrical signal and performing sending. The embodiments example benefits are greatly reducing complexity of system implementation and maximally reducing a system upgrade cost and an optical power loss.
摘要翻译：提供信号处理方法，光接收机和光网络系统。该方法包括：接收由光网络单元发送的第一光信号，产生第二光信号并调制第二光信号的相位，分别在第一光信号和第二光信号之后获得至少一个电信号路径进行偏振分离，混频和光电转换，在对电信号的至少一个路径执行操作处理之后输出第三电信号，并根据第三电信号恢复数据信号并执行发送。实施例的示例优点是极大地降低了系统实现的复杂性，并最大限度地降低了系统升级成本和光功率损耗。

60. 发明申请

US20140328588A1 OPTICAL COMMUNICATION SYSTEM, OPTICAL TRANSMITTER, AND OPTICAL RECEIVER 有权
标题翻译：光通信系统，光发射机和光接收机
公开(公告)号：US20140328588A1
公开(公告)日：2014-11-06
申请号：US14254161
申请日：2014-04-16
申请人： Fujitsu Optical Components Limited
发明人： Yoshio SAKAI , Tamotsu AKASHI
IPC分类号： H04B10/2507
CPC分类号： H04B10/63 , H04B10/6164
摘要： An optical communication system includes an optical transmitter, and an optical receiver connected via a transmission line to the optical transmitter, in which system the optical transmitter transmits a continuous-wave light signal that enables beat detection when combined with a local oscillator signal in the optical receiver, and the optical receiver acquires a beat waveform through digital sampling by detecting the light signal using the local oscillator signal, performs frequency analysis on digitally sampled data having the beat waveform prior to demodulation, and controls the local oscillator frequency based upon the beat frequency.
摘要翻译：光通信系统包括光发射机和经由传输线路连接到光发射机的光接收机，在该系统中，光发射机发射连续波光信号，当与光学发射机中的本地振荡器信号组合时，能够进行拍频检测接收机，并且光接收机通过使用本地振荡器信号检测光信号通过数字采样获取拍频波形，对在解调之前具有拍频波形的数字采样数据进行频率分析，并且基于拍频来控制本地振荡器频率。

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