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1. 发明公开

EP2747323A1 METHOD OF DERIVING DATA SYMBOLS FROM AN OPTICAL POLARIZATION DIVISION MULTIPLEXED SIGNAL 审中-公开
标题翻译： Verfahren zum Ableiten von Datensymbolen aus einem optischen Polarisations-Multiplexingsignals
公开(公告)号：EP2747323A1
公开(公告)日：2014-06-25
申请号：EP12306657.3
申请日：2012-12-21
申请人： Alcatel Lucent
发明人： Ghazisaeidi, Amirhossein , Charlet, Gabriel , Bertran Pardo, Oriol
IPC分类号： H04J14/06
CPC分类号： H04J14/06
摘要： Proposed is a method of deriving data symbols from an optical PDM signal. The PDM signal is down-converted. A first digital signal, representing complex signal values of the down-converted optical signal along a first polarization axis, and a second digital signal, representing complex signal values of the down-converted optical signal along a second, orthogonal polarization axis, are derived. Polarization demultiplexing is performed using a set of FIR filters. Noise whitening filters are applied, wherein the filter coefficients of the noise whitening filters are chosen in dependence on the set of FIR filters.
摘要翻译：提出的是从光学PDM信号中导出数据符号的方法。 PDM信号被下变频。导出表示沿着第一偏振轴的下变频光信号的复信号值的第一数字信号和表示沿着第二正交偏振轴的下变频光信号的复信号值的第二数字信号。使用一组FIR滤波器来执行极化解复用。应用噪声白化滤波器，其中根据FIR滤波器组来选择噪声白化滤波器的滤波器系数。

2. 发明公开

EP2720424A1 Apparatus, method and computer program operable to determine estimates 有权
标题翻译： Vorrichtung，Verfahren und Computerprogramm zur Bestimmung vonSchätzungen
公开(公告)号：EP2720424A1
公开(公告)日：2014-04-16
申请号：EP12306228.3
申请日：2012-10-09
申请人： Alcatel Lucent
发明人： Layec, Patricia , Ghazisaeidi, Amirhossein
IPC分类号： H04L25/02 , H04L25/03 , H04B10/61
CPC分类号： H04B10/6162 , H04B10/0795 , H04L25/0202 , H04L25/0238 , H04L25/03292 , H04L25/067
摘要： Embodiments provide an apparatus, a method and a computer program. The apparatus 10 is operable to determine estimates for transmitted symbols from received symbols of an optical signal affected by XpolM. The apparatus 10 is operable to group two or more subsequent received symbols from the optical signal into a group of received symbols and to estimate an optical channel based on the group of received symbols and a hypothesis on the transmitted symbols. The apparatus 10 is further operable to determine a reliability measure for a combination of the group of received symbols, the channel estimate, and the hypothesis, and the apparatus 10 is further operable to determine the estimates for the transmitted symbols based on reliability measures for multiple hypotheses on the transmitted symbols.
摘要翻译：实施例提供了一种装置，方法和计算机程序。装置10可操作以从受XpolM影响的光信号的接收符号确定发送符号的估计。设备10可操作以将来自光信号的两个或更多个后续接收符号分组成一组接收到的符号，并且基于所接收的符号组和所发送的符号上的假设来估计光信道。装置10还可操作以确定用于接收符号组，信道估计和假设的组合的可靠性度量，并且装置10还可操作以基于多个可靠性度量确定所发射符号的估计传输符号的假设。

3. 发明公开

EP3035455A1 Procédé de pilotage d'un amplificateur optique à semiconducteur SOA multisection 审中-公开
标题翻译：一种用于为多个区域的操作半导体光放大器（SOA）方法
公开(公告)号：EP3035455A1
公开(公告)日：2016-06-22
申请号：EP14307056.3
申请日：2014-12-16
申请人： ALCATEL LUCENT
发明人： De Valicourt, Guilhem , Ghazisaeidi, Amirhossein
IPC分类号： H01S5/026 , H01S5/0625 , H01S5/50
CPC分类号： H01S5/06251 , H01S5/0265 , H01S5/5018
摘要： Un procédé permet de pilotage des courants injectés simultanément respectivement dans chaque section d'un amplificateur optique à semiconducteur SOA qui comporte au moins une section d'amplification dans laquelle est injecté un courant d'amplification I 1 et au moins une section de modulation dans laquelle est injecté un courant de modulation I 2 ,
Le courant d'amplification I 1 et le courant de modulation I 2 sont reliés par la relation : δH̃ 2 ( ω ) = - ηδH̃ 1 ( ω ), dans laquelle H̃ 1 ( ω ) et H̃ 2 ( ω ) sont les transformées de Fourier des exposants instantanés du gain de petit-signal δh̃ 1 ( t ) et δh̃ 21 ( t ) respectivement, et η est un coefficient caractérisant le rapport d'amplitude entre ces transformées de Fourier.
Les transformées de Fourier sont reliées aux modulations du courant d'amplification I 1 et du courant de modulation I 2 respectivement par la relation : δh̃ i ( t ) = δI i (t) ..
摘要翻译：一种方法，使得有可能以控制分别同时注入到半导体光学放大器的SOA，包括在其中至少一个放大部分进行放大电流I1被注入的每一个部分中的电流，并且在其中至少一个调制单元的调制电流I 2是注射。放大电流I1和调制电流I 2通过关系链接：增量H 2（ω）=-ηδH1（ω），worin H1（ω）和H 2（ω）是小信号的瞬时指数的傅立叶变换 ΔH1（t）的增益和分别ΔH2（t）和η是表征这些傅立叶变换之间的振幅比的系数。傅立叶变换被连接到放大电流I1和由关系调制电流分别L2的调制：δhi（T）= .delta.IⅠ（T）..

4. 发明公开

EP2975789A8 Optical transmitter 审中-公开
标题翻译：的光发射器
公开(公告)号：EP2975789A8
公开(公告)日：2016-02-24
申请号：EP14290219.6
申请日：2014-07-18
申请人： Alcatel Lucent
发明人： Ghazisaeidi, Amirhossein , Charlet, Gabriel , Salsi, Massimiliano
IPC分类号： H04B10/516 , H04J14/02
CPC分类号： H04B10/5162 , H04B10/508 , H04J14/0256
摘要： The present document relates to an optical transmitter (100, 300) for providing an optical signal according to a Wavelength Division Multiplex (WDM) grid with a WDM channel spacing to a dispersion managed optical link, the optical transmitter (100, 300) comprising:
- a digital signal processor (DSP) (110) for processing a sequence of digital data values, the DSP (110) being adapted to generate a Return-to-zero (RZ) pulse shaping for the sequence of digital data values by applying a digital pulse shaping filter (115) to thereby generate a pulse shaped sequence of data values;
- a digital to analog converter (DAC) (120) being adapted to generate an analog sequence of signal values based on the pulse shaped sequence of data values;
- an optical light source (150) for providing an optical signal; and
- an optical modulator (140) being adapted to modulate, at a symbol rate (B), the optical signal based on said analog sequence of signal values,

wherein the channel spacing of the WDM grid is greater than said symbol rate (B), and the digital pulse shaping filter (115) is adapted to increase the spectral bandwidth of the pulse shaped data values with respect to the Nyquist bandwidth corresponding to the symbol rate (B).

5. 发明公开

EP2651051A1 Nonlinear Cross-Polarization Mitigation Algorithm 审中-公开
标题翻译： NichtlinearerKreuzpolarisationsabschwächungsalgorithmus
公开(公告)号：EP2651051A1
公开(公告)日：2013-10-16
申请号：EP12305439.7
申请日：2012-04-13
申请人： Alcatel Lucent
发明人： Salsi, Massimiliano , Ghazisaeidi, Amirhossein , Serena, Paolo
IPC分类号： H04B10/60
CPC分类号： H04B10/614 , H04B10/6162 , H04B10/6163 , H04B10/6166 , H04J14/06
摘要： The present document relates to optical transmission systems. In particular, the present document relates to methods and systems for the mitigation of Cross-Polarization Modulation (XPOLM) in optical transmission systems. A coherent optical receiver (200) adapted to receive an optical signal transmitted over an optical transmission channel exhibiting XPOLM is described. The received optical signal comprises a first polarization component and a second polarization component. The first and second polarization components comprise sequences of M ary phase shift keying, referred to as MPSK, symbols, respectively, M being an integer, with M > 2. The coherent optical receiver (200) comprises a conversion and processing unit (201, 202) adapted to generate a set of digital signals based on the received optical signal; a polarization de-multiplexing unit (203) adapted to de-multiplex the set of digital signals into a first two dimensional, referred to as complex, component in a first polarization axis and a second complex component in a second polarization axis; and an XPOLM compensation unit (204) adapted to transform the first and second complex components into the Stokes space, thereby yielding a set of Stokes parameters; determine a rotation of the first and second polarization axes based on the set of Stokes parameters; and determine XPOLM compensated first and second complex components by transforming the first and second complex components in accordance to the determined rotation of the first and second polarization axes.
摘要翻译：本文件涉及光传输系统。特别地，本文件涉及用于减轻光传输系统中的交叉极化调制（XPOLM）的方法和系统。描述了适于接收通过展示XPOLM的光传输信道传输的光信号的相干光接收机（200）。所接收的光信号包括第一偏振分量和第二偏振分量。第一和第二偏振分量包括M个相移键控的序列，分别被称为MPSK符号，M是M> 2的整数。相干光接收机（200）包括转换和处理单元（201， 202），适于基于所接收的光信号产生一组数字信号; 偏振解复用单元（203），其适于将所述一组数字信号解复用为第一偏振轴中的称为复数分量的第一二维分量和第二偏振轴中的第二复分量; 以及XPOLM补偿单元（204），其适于将所述第一和第二复合分量变换成所述斯托克斯空间，从而产生一组斯托克斯参数; 基于斯托克斯参数集确定第一和第二偏振轴的旋转; 并且通过根据确定的第一和第二偏振轴的旋转来变换第一和第二复合分量来确定XPOLM补偿的第一和第二复合分量。

6. 发明授权

EP2720424B1 Apparatus, method and computer program operable to determine estimates 有权
标题翻译：的装置，方法和计算机程序，用于估计的判定
公开(公告)号：EP2720424B1
公开(公告)日：2016-11-30
申请号：EP12306228.3
申请日：2012-10-09
申请人： ALCATEL LUCENT
发明人： Layec, Patricia , Ghazisaeidi, Amirhossein
IPC分类号： H04B10/61 , H04L25/06 , H04L25/02 , H04L25/03
CPC分类号： H04B10/6162 , H04B10/0795 , H04L25/0202 , H04L25/0238 , H04L25/03292 , H04L25/067

7. 发明授权

EP2924897B1 Method of equalizing an optical transmission signal 有权
标题翻译： Verfahren zur Entzerrung eines optischenÜbertragungssignals
公开(公告)号：EP2924897B1
公开(公告)日：2016-06-22
申请号：EP14305452.6
申请日：2014-03-28
申请人： ALCATEL LUCENT
发明人： Morea, Annalisa , Renaudier, Jeremi , Ghazisaeidi, Amirhossein
IPC分类号： H04B10/294 , H04J14/02
CPC分类号： H04B10/2941 , H04B10/2507 , H04J14/0221 , H04J14/0298
摘要： Proposed is a method of equalizing an optical signal that has an overall bandwidth formed on a number of adjacent spectral slots, wherein the signal comprises a set of non-overlapping subcarrier signals. A distribution of the subcarrier signals onto the slots is such, that at least one slot is occupied by more than one subcarrier signal. The signal is received and amplified. Respective power levels are measured for the subcarrier signals. Distribution data is provided, which indicates the distribution of the subcarrier signals onto the spectral slots. Power level data is provided, which indicates for the spectral slots respective desired power levels. For the spectral slots respective attenuation values are derived, using the measured power levels, the distribution data and the power level data. Finally, the optical transmission signal is attenuated within the spectral slots individually, using the derived attenuation values.
摘要翻译：提出了一种对具有在多个相邻频谱时隙上形成的总带宽的光信号进行均衡的方法，其中该信号包括一组不重叠的副载波信号。子载波信号在时隙上的分布是这样的，即至少一个时隙被多于一个的子载波信号所占据。信号被接收和放大。测量副载波信号的相应功率电平。提供分布数据，其指示子载波信号在频谱槽上的分布。提供功率电平数据，其指示频谱槽各自期望的功率电平。对于频谱槽，使用测量的功率电平，分布数据和功率电平数据导出相应的衰减值。最后，使用导出的衰减值，光谱传输信号在频谱槽内单独衰减。

8. 发明公开

EP2784962A1 Method of receiving a phase-modulated polarization division multiplexed optical signal 审中-公开
标题翻译： Verfahren zum Empfang eines phasenmodulierten optischen Polarisationsmultiplexsignals
公开(公告)号：EP2784962A1
公开(公告)日：2014-10-01
申请号：EP13305395.9
申请日：2013-03-28
申请人： ALCATEL LUCENT
发明人： Rival, Olivier , Morea, Annalisa , Ghazisaeidi, Amirhossein
IPC分类号： H04J14/06 , H04B10/61
CPC分类号： H04J14/06 , H04B10/613 , H04B10/614 , H04B10/6166
摘要： Proposed is a method of receiving a phase-modulated polarization division multiplexed (PDM) optical signal. A first digital signal and a second digital signal are derived from the optical signal, representing respective complex values of respective, orthogonal polarization states.
Polarization division demultiplexing is performed, using a set of FIR filters of K filter coefficients. Within a first time interval, the sets of filter coefficients are updated for different discrete time instances, using a first algorithm to achieve PDM demultiplexing with regard to a first phase-modulation method. Within a second time interval, the sets of filter coefficients are kept fixed. Within a third time interval, the sets of filter coefficients are updated for different discrete time instances, using a second algorithm which achieves PDM demultiplexing with regard to a second phase-modulation method different from the first phase-modulation method.
摘要翻译：提出了一种接收相位调制偏振复用（PDM）光信号的方法。从光信号导出第一数字信号和第二数字信号，表示相应的正交极化状态的相应复数值。使用K个滤波器系数的一组FIR滤波器来执行极化分解解复用。在第一时间间隔内，针对不同的离散时间实例对滤波器系数集合进行更新，使用第一种算法来实现关于第一相位调制方法的PDM解复用。在第二时间间隔内，滤波器系数的集合被保持固定。在第三时间间隔内，使用相对于与第一相位调制方法不同的第二相位调制方法实现PDM解复用的第二算法，为不同的离散时间实例更新滤波器系数集合。

9. 发明公开

EP2975789A1 Optical transmitter 审中-公开
标题翻译： Optischer发信人
公开(公告)号：EP2975789A1
公开(公告)日：2016-01-20
申请号：EP14290219.6
申请日：2014-07-18
申请人： Alcatel Lucent
发明人： Ghazisaeidi, Amirhossein , Charlet, Gabriel , Salsi, Massimiliano
IPC分类号： H04B10/516 , H04J14/02
CPC分类号： H04B10/5162 , H04B10/508 , H04J14/0256
摘要： The present document relates to an optical transmitter (100, 300) for providing an optical signal according to a Wavelength Division Multiplex (WDM) grid with a WDM channel spacing to a dispersion managed optical link, the optical transmitter (100, 300) comprising:
- a digital signal processor (DSP) (110) for processing a sequence of digital data values, the DSP (110) being adapted to generate a Return-to-zero (RZ) pulse shaping for the sequence of digital data values by applying a digital pulse shaping filter (115) to thereby generate a pulse shaped sequence of data values;
- a digital to analog converter (DAC) (120) being adapted to generate an analog sequence of signal values based on the pulse shaped sequence of data values;
- an optical light source (150) for providing an optical signal; and
- an optical modulator (140) being adapted to modulate, at a symbol rate (B), the optical signal based on said analog sequence of signal values,

wherein the channel spacing of the WDM grid is greater than said symbol rate (B), and the digital pulse shaping filter (115) is adapted to increase the spectral bandwidth of the pulse shaped data values with respect to the Nyquist bandwidth corresponding to the symbol rate (B).
摘要翻译：本发明涉及一种用于根据具有WDM信道间隔的波分复用（WDM）网格向色散管理的光链路提供光信号的光发射机（100,300），所述光发射机（100,300）包括： - 用于处理数字数据值序列的数字信号处理器（DSP）（110），所述DSP（110）适于通过应用数字数据值序列来产生用于所述数字数据值序列的归零（RZ）脉冲整形数字脉冲整形滤波器（115），从而产生脉冲形状的数据值序列; - 数模转换器（DAC）（120），其适于基于脉冲形状的数据值序列生成信号值的模拟序列; - 用于提供光信号的光学光源（150）; 以及 - 光调制器（140），其适于以符号速率（B）调制基于信号值的所述模拟序列的光信号，其中所述WDM网格的信道间隔大于所述符号速率（B）并且数字脉冲整形滤波器（115）适于相对于符号率（B）对应的奈奎斯特带宽增加脉冲形状数据值的频谱带宽。

10. 发明公开

EP2924897A1 Method of equalizing an optical transmission signal 有权
标题翻译：一种用于均衡的光传输信号的方法
公开(公告)号：EP2924897A1
公开(公告)日：2015-09-30
申请号：EP14305452.6
申请日：2014-03-28
申请人： ALCATEL LUCENT
发明人： Morea, Annalisa , Renaudier, Jeremi , Ghazisaeidi, Amirhossein
IPC分类号： H04B10/294 , H04J14/02
CPC分类号： H04B10/2941 , H04B10/2507 , H04J14/0221 , H04J14/0298
摘要： Proposed is a method of equalizing an optical signal that has an overall bandwidth formed on a number of adjacent spectral slots, wherein the signal comprises a set of non-overlapping subcarrier signals. A distribution of the subcarrier signals onto the slots is such, that at least one slot is occupied by more than one subcarrier signal. The signal is received and amplified. Respective power levels are measured for the subcarrier signals. Distribution data is provided, which indicates the distribution of the subcarrier signals onto the spectral slots. Power level data is provided, which indicates for the spectral slots respective desired power levels. For the spectral slots respective attenuation values are derived, using the measured power levels, the distribution data and the power level data. Finally, the optical transmission signal is attenuated within the spectral slots individually, using the derived attenuation values.

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