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1. 发明申请

WO2015155520A1 METHOD OF NON-LINEARITY COMPENSATION IN OPTICAL FIBRE COMMUNICATIONS 审中-公开
标题翻译：光纤通信中非线性补偿的方法
公开(公告)号：WO2015155520A1
公开(公告)日：2015-10-15
申请号：PCT/GB2015/051063
申请日：2015-04-07
申请人： ASTON UNIVERSITY
发明人： LE, Son Thai , ELLIS, Andrew
IPC分类号： H04B10/2543 , H04B10/61 , H04B10/548
CPC分类号： H04B10/2543 , H04B10/548 , H04B10/6163 , H04B2210/252
摘要： A nonlinearity compensation technique for a CO-OFDM transmission system in which a proportion (e.g. up to 50%) of OFDM subcarriers is transmitted along with a phase-conjugate copy (PCP) on another subcarrier (replacing a data carrying subcarrier) to enable nonlinear distortion compensation. Nonlinear distortion experienced by closely spaced subcarriers in an OFDM system is highly correlated. The PCPs are used at the receiver to estimate the nonlinear distortion (e.g. nonlinear phase shift) of their respective original subcarriers and other subcarriers close to the PCP. With this technique, the optical fibre nonlinearity due to the Kerr effect in OFDM systems can be effectively compensated without the complexity of DBP or 50% loss in capacity of the phase conjugate twin wave (PC-TW) technique. Moreover, the technique proposed herein can be effectively implemented in both single polarization and PMD systems, in both single channel and WDM systems.
摘要翻译：一种用于CO-OFDM传输系统的非线性补偿技术，其中OFDM子载波的比例（例如高达50％）与在另一子载波上的相位共轭复制（PCP）一起发送（替代携带数据的子载波）以实现非线性失真补偿。在OFDM系统中由紧密间隔的子载波经历的非线性失真是高度相关的。在接收机处使用PCP来估计它们各自的原始子载波和靠近PCP的其他子载波的非线性失真（例如非线性相移）。利用这种技术，可以有效地补偿OFDM系统中由于克尔效应引起的光纤非线性，而不需要DBP的复杂性或相位共轭双波（PC-TW）技术容量的50％损失。此外，在单通道和WDM系统中，本文提出的技术可以在单极化和PMD系统中有效地实现。

2. 发明申请

WO2007104211A1 波分复用系统及其残余色散补偿的方法和装置审中-公开
公开(公告)号：WO2007104211A1
公开(公告)日：2007-09-20
申请号：PCT/CN2007/000090
申请日：2007-01-10
申请人：中兴通讯股份有限公司 , 张立昆 , 王加莹
发明人：张立昆 , 王加莹
IPC分类号： H04B10/18 , H04J14/02
CPC分类号： H04B10/25133 , H04B10/07951 , H04B2210/252 , H04B2210/254 , H04B2210/256 , H04J14/0221
摘要： A wavelength division multiplexing system and the residual dispersion compensating device and method thereof, the residual dispersion compensating device (40) comprising: a performance parameter detection device (401), for receiving and detecting performance parameters of the optical signal at the receiving port, and transmitting the detecting result of performance parameters to a central control device; the central control device (402), for determining the dispersion adjusting mode of a tunable dispersion compensator based on the detecting result of performance parameters, and transmitting the dispersion adjusting mode to a tunable dispersion compensator control device via a control command; and the tunable dispersion compensator control device (403), for receiving the control command transmitted by the central control device and adjusting the dispersion compensating amount of the dispersion compensator based on the control command, thereby making residual dispersion of wavelength channels meet the dispersion tolerance requirements of the optical receiver.

3. 发明申请

WO2003052977A1 CHROMATIC DISPERSIN COMPENSATION 审中-公开
标题翻译：色素分布补偿
公开(公告)号：WO2003052977A1
公开(公告)日：2003-06-26
申请号：PCT/CA2002/001862
申请日：2002-12-05
申请人： NORTEL NETWORKS LIMITED
发明人： VAN SCHYNDEL, André
IPC分类号： H04B10/18
CPC分类号： H04B10/66 , H04B10/2513 , H04B2210/252
摘要： A method and apparatus for compensating, in the electrical domain, for chromatic dispersion of an optical signal is disclosed. An optical signal is converted to an electrical signal comprised of components which are recoverable and components which are not directly recoverable. A first approximation of the output is derived by applying a transfer function to the electrical signal. The components of the electrical signal which are not directly recoverable are then estimated by applying a second transfer function to the first approximation. After removing these components a second approximation of the output is obtained by re-applying the first transfer function to the result. The optical signal may have a suitably small extinction ratio to improve compensation. The square root of the electrical signal may be taken to improve compensation. A better approximation may be achieved by re-applying the above method iteratively.
摘要翻译：公开了一种用于在电域中补偿光信号的色散的方法和装置。光信号被转换成由可恢复的组件和不可直接恢复的组件组成的电信号。通过对电信号应用传递函数导出输出的第一近似值。然后通过对第一近似应用第二传递函数来估计不能直接恢复的电信号的分量。在去除这些组件之后，通过将第一传递函数重新应用于结果来获得输出的第二近似值。光信号可以具有适当的消光比以改善补偿。可以采用电信号的平方根来改善补偿。可以通过重复应用上述方法来实现更好的近似。

4. 发明申请

WO0018047A3 PRE- AND POST-COMPENSATION TECHNIQUES FOR WAVELENGTH DIVISION MULTIPLEXING SYSTEMS 审中-公开
标题翻译：波长分割多路复用系统的前置和后补偿技术
公开(公告)号：WO0018047A3
公开(公告)日：2000-05-25
申请号：PCT/US9922009
申请日：1999-09-21
申请人： CORNING INC
发明人： DASILVA VALERIA L , ENNSER KARIN M , LIU YANMING , LUCERO ALAN J , TSUDA SERGIO
IPC分类号： G02F1/035 , H04B10/2525 , H04J14/00 , H04J14/02 , H04B10/16 , H04B10/17 , H04B10/18
CPC分类号： H04B10/2525 , H04B2210/252 , H04B2210/254
摘要： A long haul, broadband DWDM system that has been optimized by the proper selection of the distribution of total dispersion compensation. Dispersion compensation is utilized at both the receiver and the transmitter ends. System performance is dependent on the ratio of compensation split between the transmitter and the receiver. A system operated in the non-linear regime can be compensated to operate with low BER and with reduced penalties due to residual dispersion effects, even when the spread of the total accumulated dispersion between the extreme channels in a broadband system exceeds 1,000 ps/nm.
摘要翻译：长距离宽带DWDM系统已经通过适当选择总色散补偿的分布进行了优化。在接收机和发射机端都使用色散补偿。系统性能取决于发射机和接收机之间的补偿分配比例。以非线性方式操作的系统可以被补偿以低BER运行，并且由于残余色散效应而减少惩罚，即使宽带系统中的极端信道之间的总累积色散的扩展超过1,000ps / nm。

5. 发明申请

WO1996037042A1 METHOD AND APPARATUS FOR TRANSMITTING SIGNALS IN AN OPTICAL FIBRE 审中-公开
标题翻译：用于在光纤中传输信号的方法和装置
公开(公告)号：WO1996037042A1
公开(公告)日：1996-11-21
申请号：PCT/SE1996000626
申请日：1996-05-14
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , WEBER, Jean-Pierre
发明人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
IPC分类号： H03C01/60
CPC分类号： H04B10/2519 , G02B6/12004 , G02B6/29317 , G02B6/29352 , G02B6/29358 , G02B6/29394 , G02B6/29395 , H04B10/505 , H04B10/58 , H04B2210/252
摘要： In a method and an apparatus for transmitting signals in an optical fibre, an amplitude modulator (1) is provided for amplitude modulating an optical carrier at a high frequency with the signals to be transmitted. A suppressing means (2) is provided to suppress at least part of one of the side bands of the modulated optical carrier to reduce the effect of group velocity dispersion in the optical fibre.
摘要翻译：在用于在光纤中传输信号的方法和装置中，提供了幅度调制器（1），用于以高频与要发射的信号对光载波进行幅度调制。提供抑制装置（2）以抑制调制光载波的一个边带的至少一部分，以减少光纤中群速度色散的影响。

6. 发明申请

WO2016011933A1 COMPENSATION OF NON-LINEAR TRANSMITTER IMPAIRMENTS IN OPTICAL COMMUNICATION NETWORKS 审中-公开
标题翻译：光通信网络中非线性发射机的补偿补偿
公开(公告)号：WO2016011933A1
公开(公告)日：2016-01-28
申请号：PCT/CN2015/084681
申请日：2015-07-21
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： KAN, Clarence , ZHU, Fei , LI, Zhihong
IPC分类号： H04B10/2543
CPC分类号： H04B10/40 , H04B10/616 , H04B2210/252
摘要： An optical transceiver comprises a transmitter configured to transmit a first signal, and a receiver coupled to the transmitter and configured to receive a first compensation, wherein the first compensation is based on a pattern-dependent analysis of the first signal, and provide the first compensation to the transmitter, wherein the transmitter is further configured to compensate a second signal based on the first compensation to form a first compensated signal, and transmit the first compensated signal. An optical transmitter comprises a digital signal processor (DSP) comprising a compensator, a digital-to-analog converter (DAC) coupled to the DSP, a radio frequency amplifier (RFA) coupled to the DAC, and an electrical-to-optical converter (EOC) coupled to the RFA. An optical receiver comprises an optical-to-electrical converter (OEC), an analog-to-digital converter (ADC) coupled to the OEC, and a digital signal processor (DSP) coupled to the ADC and comprising a calibrator.
摘要翻译：光收发器包括被配置为发送第一信号的发射机和耦合到所述发射机并被配置为接收第一补偿的接收机，其中所述第一补偿基于所述第一信号的模式相关分析，并且提供所述第一补偿其中所述发射机还被配置为基于所述第一补偿来补偿第二信号以形成第一补偿信号，并且发送所述第一补偿信号。光发射机包括数字信号处理器（DSP），包括补偿器，耦合到DSP的数模转换器（DAC），耦合到DAC的射频放大器（RFA）和电 - 光转换器（EOC）耦合到RFA。光接收器包括光 - 电转换器（OEC），耦合到OEC的模数转换器（ADC）和耦合到ADC的数字信号处理器（DSP）并且包括校准器。

7. 发明申请

WO2014141260A1 PRE-COMPENSATION OF CHROMATIC DISPERSION USING COHERENT-LESS DSP 审中-公开
标题翻译：使用无源DSP对色散进行预补偿
公开(公告)号：WO2014141260A1
公开(公告)日：2014-09-18
申请号：PCT/IL2014/050260
申请日：2014-03-13
申请人： MULTIPHY LTD.
发明人： SADOT, Dan , GORSHTEIN, Albert , SHABTAI, Avraham
IPC分类号： H04B10/2513 , H04B10/2507 , H04J1/00
CPC分类号： H04B10/5053 , H04B10/25137 , H04B2210/252 , H04B2210/254
摘要： A method of pre-compensating distortions of a time varying optical communication channel, comprising at the transmitter side, multiplexing of the input data streams to convert the rate of the input data streams to another desired rate at a plurality of data lanes with resulting symbols; encoding the symbols in the lanes at a sampling rate of at least the symbol rate; performing fixed pre-compensation of deterministic distortions; and performing adaptive pre-compensation of the channel, based on feedback from the channel or on side information. At the receiver side, post- compensating distortions by: adjusting the amplitude of the received signal to be at full swing in each data lane; digitizing the amplitude of the received signal to obtain a digital signal; performing adaptive ISI compensation of the symbols in each data lane; decoding the compensated symbols in the lanes to obtain a multiplexed data stream; and de- multiplexing the multiplexed data stream to reconstruct the transmitted input data streams; performing fixed pre-compensation of deterministic distortions in the channel by pre-filtering the incoming signal to reduce the aliasing; and performing adaptive post-compensation of the channel, based on blind channel estimation, channel feedback or side information.
摘要翻译：一种预补偿时变光通信信道的失真的方法，包括在发射机侧，多路复用输入数据流，以在具有所得符号的多个数据通道处将输入数据流的速率转换为另一期望速率; 以至少符号率的采样率对通道中的符号进行编码; 执行确定性扭曲的固定预补偿; 以及基于来自信道或侧面信息的反馈来执行信道的自适应预补偿。在接收机侧，通过以下方式补偿后补偿失真：在每个数据通道中调整接收信号的幅度为全速; 数字化接收信号的幅度以获得数字信号; 对每个数据通道中的符号执行自适应ISI补偿; 解码通道中的补偿符号以获得多路复用数据流; 并且对多路复用的数据流进行解复用以重构所发送的输入数据流; 通过对输入信号进行预滤波来对信道中的确定性失真进行固定预补偿，以减少混叠; 并且基于盲信道估计，信道反馈或侧信息来执行信道的自适应后补偿。

8. 发明申请

WO2013185734A3 DISPERSION AND NONLINEARITY COMPENSATION METHOD AND SYSTEM IN COHERENT OPTICAL COMMUNICATION SYSTEM 审中-公开
标题翻译：相干光通信系统中的分散和非线性补偿方法与系统
公开(公告)号：WO2013185734A3
公开(公告)日：2014-02-06
申请号：PCT/CN2013081517
申请日：2013-08-15
申请人： ZTE CORP
发明人： SHEN BAILIN , YU SONG , YANG JIE , LI MINLIANG
IPC分类号： H04B10/2525 , H04B10/2543
CPC分类号： H04B10/2513 , H04B10/2543 , H04B10/299 , H04B10/616 , H04B2210/252
摘要： A dispersion and nonlinearity compensation method and system in a coherent optical communication system. The method comprises: dividing the total length of an optical fiber into N steps having equal lengths, and performing dispersion compensation and then nonlinearity compensation in each step. The performing nonlinearity compensation in each step comprises: with a current sampling point as a center, performing sampling at 2k+1 sampling points of X and Y polarization states respectively, calculating power of 2(2k+1) sampling points, adding power of sampling points at the same position on X and Y polarization states to obtain 2k+1 power values, performing weighted summation on the 2k+1 power values, then multiplying the weighted sum by a preset coefficient W to obtain a nonlinear phase angle of the current sampling point, and performing compensation according to the nonlinear phase angle, N and k being positive integers. In the technical solution according to the embodiment of the present invention, the manner for calculating the nonlinear phase angle is improved, and the calculation is less complex.
摘要翻译：相干光通信系统中的色散和非线性补偿方法及系统。该方法包括：将光纤的总长度分成具有相等长度的N个步长，并在每个步骤中进行色散补偿，然后执行非线性补偿。每个步骤的执行非线性补偿包括：以当前采样点为中心，分别在X和Y偏振态的2k + 1个采样点进行采样，计算2（2k + 1）个采样点的功率，加上采样功率在X和Y偏振态处于相同位置处，以获得2k + 1个功率值，对2k + 1个功率值进行加权求和，然后将加权和乘以预设系数W以获得当前采样的非线性相位角点，并根据非线性相位角执行补偿，N和k为正整数。在本发明的实施方式的技术方案中，提高了计算非线性相位角的方式，并且计算不太复杂。

9. 发明申请

WO2009054045A1 光分散補償装置および光受信装置审中-公开
标题翻译：光学补偿补偿器和光接收器
公开(公告)号：WO2009054045A1
公开(公告)日：2009-04-30
申请号：PCT/JP2007/070632
申请日：2007-10-23
申请人：富士通株式会社 , ▲高▼原智夫 , 田中俊毅
发明人： ▲高▼原智夫 , 田中俊毅
IPC分类号： H04B10/02 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/18 , H04B10/26 , H04B10/28
CPC分类号： H04B10/25133 , H04B10/6971 , H04B2210/252
摘要：　光受信装置（１００）は、光電変換器（１１０）と、電気分散補償器（１２０）と、雑音等化フィルタ（１３０）と、識別器（１４０）と、を備えている。光電変換器（１１０）は、光信号を受光して電気信号に変換する。電気分散補償器（１２０）は、光電変換器（１１０）により変換された電気信号を分散補償する。雑音等化フィルタ（１３０）は、電気分散補償器（１２０）により分散補償された電気信号の雑音を抑圧する。識別器（１４０）は、雑音等化フィルタ（１３０）により雑音を抑圧された電気信号を受信する。
摘要翻译：光接收器（100）包括光电转换器（110），电色散补偿器（120），噪声均衡滤波器（130）和鉴别器（140）。光电转换器（110）将接收到的光信号转换成电信号。电色散补偿器（120）对由光电转换器（110）转换的电信号进行色散补偿。噪声均衡滤波器（130）抑制由电色散补偿器（120）进行色散补偿的电信号中的噪声。鉴别器（140）接收噪声被噪声均衡滤波器（130）抑制的电信号。

10. 发明申请

WO1996031024A1 OPTICAL PRE-AMPLIFIER 审中-公开
标题翻译：光学前置放大器
公开(公告)号：WO1996031024A1
公开(公告)日：1996-10-03
申请号：PCT/GB1996000754
申请日：1996-03-29
申请人： UNIVERSITY OF SOUTHAMPTON , LAMING, Richard, Ian
发明人： UNIVERSITY OF SOUTHAMPTON
IPC分类号： H04B10/18
CPC分类号： G02B6/29394 , G02B6/29317 , H04B10/2519 , H04B2210/252 , H04B2210/254
摘要： An optical pre-amplifier for amplifying optical signals which have been transmitted via a dispersive optical transmission link, comprises a chirped Bragg grating noise filter. The filter also acts as a dispersion compensating filter, with the dispersion of the chirped Bragg grating noise filter acting against the dispersion of the optical transmission link.
摘要翻译：用于放大经由色散光传输链路传输的光信号的光学前置放大器包括啁啾布拉格光栅噪声滤波器。该滤波器还用作色散补偿滤波器，其中啁啾布拉格光栅噪声滤波器的色散对抗光传输链路的色散。

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