POLARIZATION MODULATION OF SUPERVISORY SIGNALS FOR REDUCING INTERFERENCE WITH DATA SIGNALS
    1.
    发明申请
    POLARIZATION MODULATION OF SUPERVISORY SIGNALS FOR REDUCING INTERFERENCE WITH DATA SIGNALS 审中-公开
    监测信号的极化调制减少数据信号的干扰

    公开(公告)号:WO2017212349A1

    公开(公告)日:2017-12-14

    申请号:PCT/IB2017/052318

    申请日:2017-04-21

    Abstract: A system and method including polarization modulation of supervisory signals for reducing interference with data signals in a wavelength division multiplexed optical communication system. At least one supervisory signal for monitoring a transmission path [102] and/or elements coupled to the transmission path [102] is fast polarization modulated and launched with data signals onto the path. Polarization modulating [402] of the supervisory signal reduces impact of the supervisory signal on the data signals and improves system performance.

    Abstract translation: 包括用于减少波分复用光通信系统中的数据信号干扰的监控信号的偏振调制的系统和方法。 用于监视传输路径[102]和/或耦合到传输路径[102]的元件的至少一个监控信号被快速极化调制并且利用数据信号发射到路径上。 监控信号的偏振调制[402]降低了监控信号对数据信号的影响并提高了系统性能。

    JOINT ACQUISITION OF CHROMATIC DISPERSION AND FREQUENCY OFFSET IN OPTICAL SYSTEMS
    2.
    发明申请
    JOINT ACQUISITION OF CHROMATIC DISPERSION AND FREQUENCY OFFSET IN OPTICAL SYSTEMS 审中-公开
    光学系统中色散和频偏的联合采集

    公开(公告)号:WO2017088697A1

    公开(公告)日:2017-06-01

    申请号:PCT/CN2016/106281

    申请日:2016-11-17

    Abstract: An optical transceiver in an optical communications network, comprising a receiver configured to receive an optical signal comprising an X-polarization component and a Y-polarization component. The optical transceiver further comprises a processor coupled to the receiver and configured to determine a chromatic dispersion (CD) estimate and a local oscillator frequency offset (LOFO) estimate based on a relationship between a plurality of CD values and a plurality of LOFO values. The optical transceiver further comprises a transmitter coupled to the processor and configured to transmit the CD estimate, the LOFO estimate, and the optical signal to a downstream component in the optical communications network.

    Abstract translation: 光学通信网络中的光学收发器,其包括被配置为接收包括X偏振分量和Y偏振分量的光学信号的接收器。 该光学收发器进一步包括处理器,其耦合到接收器并且被配置为基于多个CD值和多个LOFO值之间的关系来确定色散(CD)估计和本地振荡器频率偏移(LOFO)估计。 光收发器还包括耦合到处理器并且被配置为将CD估计,LOFO估计和光信号传输到光通信网络中的下游组件的发射器。

    FIBRE-OPTIC COMMUNICATION BASED ON DUAL-RAIL AND POLARIZATION ENCODING
    3.
    发明申请
    FIBRE-OPTIC COMMUNICATION BASED ON DUAL-RAIL AND POLARIZATION ENCODING 审中-公开
    基于双轨和极化编码的光纤通信

    公开(公告)号:WO2016170223A1

    公开(公告)日:2016-10-27

    申请号:PCT/FI2015/050278

    申请日:2015-04-22

    Abstract: According to an example aspect, there is provided an apparatus comprising a first optical converter coupled to a fibre interface and to two waveguides, a dual rail encoder configured to encode dual rail form light from the two waveguides with payload information, and wherein the dual rail encoder is coupled to the first optical converter or to a second optical converter disposed between the dual rail encoder and the fibre interface, and wherein the first optical converter or the second optical converter is coupled so as to provide polarization encoded light into the fibre interface.

    Abstract translation: 根据示例方面,提供了一种装置,包括耦合到光纤接口和两个波导的第一光学转换器,双轨编码器,其被配置为从具有有效载荷信息的两个波导编码双轨形式的光,并且其中所述双轨 编码器耦合到第一光学转换器或设置在双轨编码器和光纤接口之间的第二光转换器,并且其中第一光转换器或第二光转换器被耦合以便将光学编码的光提供到光纤接口中。

    光通信方法およびシステム
    4.
    发明申请
    光通信方法およびシステム 审中-公开
    光通信方法与系统

    公开(公告)号:WO2016002149A1

    公开(公告)日:2016-01-07

    申请号:PCT/JP2015/003018

    申请日:2015-06-17

    Inventor: 森本 政仁

    CPC classification number: H04B10/85 H04B10/532 H04B10/70 H04L9/0852

    Abstract:  本発明は、従来よりも盗聴が困難な光通信方法およびシステムを提供する。本発明の一実施形態に係る光通信システム100は、相関光子対を発生させる光子対発生部112と、相関光子対の一方の光路上に設けられ、送信される情報に基づいて向きが変更可能な偏光子121と、相関光子対の一方の光路上において光子対発生部と偏光子との間に設けられ、相関光子対の一方を遮断可能なシャッター118と、相関光子対の他方の光路上に設けられた光子検出器116と、を備える。

    Abstract translation: 本发明提供了一种光纤通信方法和系统,其使开口比现有技术更困难。 根据本发明实施例的光通信系统(100)具有:产生相关光子对的光子对生成单元(112); 偏振器(121),其设置在所述相关光子对中的一个的光路中,并且能够基于所发送的信息改变其方向; 在所述相关光子对之一的光路中设置在所述光子对产生单元和所述偏振器之间并且能够阻挡所述相关光子对之一的快门(118) 以及设置在相关光子对中的另一个的光路中的光子检测器(116)。

    METHOD FOR DUAL POLARIZATION COHERENT OPTICAL MODULATION
    5.
    发明申请
    METHOD FOR DUAL POLARIZATION COHERENT OPTICAL MODULATION 审中-公开
    双极化相关光学调制方法

    公开(公告)号:WO2015104058A1

    公开(公告)日:2015-07-16

    申请号:PCT/EP2014/050405

    申请日:2014-01-10

    Abstract: A method (1400) for dual polarization coherent optical modulation includes: mapping (1401) data bits to a first constellation according to a first modulation format to provide first constellation data bits; mapping (1402) the first constellation data bits to a second constellation according to a second modulation format to provide second constellation data bits, wherein the second constellation comprises a higher number of constellation points than the first constellation; and modulating (1403) the second constellation data bits onto a dual polarized optical signal, wherein the optical signal comprises a first polarization component (X) and a second polarization component (Y).

    Abstract translation: 用于双偏振相干光调制的方法(1400)包括:根据第一调制格式将数据位映射(1401)到第一星座图,以提供第一星座数据位; 根据第二调制格式将第一星座数据位映射(1402)到第二星座,以提供第二星座数据位,其中第二星座包括比第一星座更多数量的星座点; 并且将所述第二星座数据位调制(1403)到双偏振光信号上,其中所述光信号包括第一偏振分量(X)和第二偏振分量(Y)。

    FIBER-NONLINEARITY PRE-COMPENSATION PROCESSING FOR AN OPTICAL TRANSMITTER
    6.
    发明申请
    FIBER-NONLINEARITY PRE-COMPENSATION PROCESSING FOR AN OPTICAL TRANSMITTER 审中-公开
    光纤发射机的光纤非线性预补偿处理

    公开(公告)号:WO2015042030A1

    公开(公告)日:2015-03-26

    申请号:PCT/US2014/055819

    申请日:2014-09-16

    Applicant: ALCATEL LUCENT

    Abstract: An optical transmitter configured to mitigate the adverse effects of fiber nonlinearity by altering the transmitted constellation symbols based on specific nonlinear characteristics of a fiber- optic link over which the optical transmitter is configured to transmit and on an a priori estimate of the nonlinear component of the optical- signal distortion in that fiber-optic link. In an example embodiment, each constellation symbol is altered by a respective perturbation amount determined using (i) a calculated or measured nonlinear transfer function corresponding to the fiber-optic link and (ii) a set of neighboring constellation symbols that are expected to contribute to the nonlinear distortion of the optical signal carrying the present constellation symbol due to the fiber nonlinearity. In various embodiments, different appropriate perturbation amounts can be selected to approximately pre-compensate nonlinear distortions caused by various nonlinear optical effects, such as four-wave mixing, etc.

    Abstract translation: 一种光发射机,被配置为通过基于光发射机被配置为传输的光纤链路的特定非线性特性来改变所发射的星座符号来减轻光纤非线性的不利影响,并且基于对该发射器的非线性分量的先验估计 光纤链路中的光信号失真。 在一个示例实施例中,每个星座符号被改变为相应的扰动量,该扰动量使用(i)对应于光纤链路的计算或测量的非线性传递函数确定,以及(ii)一组相邻的星座符号, 由于光纤非线性,携带当前星座符号的光信号的非线性失真。 在各种实施例中,可以选择不同的适当扰动量来大致预补偿由诸如四波混频等各种非线性光学效应引起的非线性失真。

    光送受信システム、送信器、受信器および光送受信方法
    7.
    发明申请
    光送受信システム、送信器、受信器および光送受信方法 审中-公开
    光传输/接收系统,发射机,接收机和光传输/接收方法

    公开(公告)号:WO2014148387A1

    公开(公告)日:2014-09-25

    申请号:PCT/JP2014/056903

    申请日:2014-03-14

    Abstract:  送信器(10)は、制御情報を差動符号化して差動符号化信号を生成し、差動符号化信号によって特定周波数に電力が集中する信号系列を変調する。送信器(10)は、さらに2つの偏波成分の一方の偏波の主信号を時分割多重し、他の偏波の主信号には特定周波数に電力が集中する信号系列をそのまま時分割多重する。次に、送信器(10)は、時分割多重化した双方の偏波を偏波多重した信号光を受信器(20)に送信する。受信器(20)は、受信した信号光を偏波分割し、2つの偏波信号を生成する。そして、受信器(20)は、2つの偏波信号から特定周波数に電力が集中する信号系列を抽出し、その抽出した信号系列を差動検波して、制御情報を復調する。

    Abstract translation: 发射机(10)对控制信息进行差分编码以产生差分编码信号,并且发射机(10)使用差分编码信号来调制功率集中在特定频率的信号序列。 此外,发送器(10)对作为两个偏振波分量之一的偏振波的主信号进行时分复用,发送器(10)将另一极化波的主信号与 功率集中在特定频率的信号序列。 然后,发送器(10)向接收机(20)发送通过对两个时分复用偏振波进行偏振复用而获得的信号光。 接收器(20)将接收到的信号光进行偏振分频以产生两个偏振波信号。 此外,接收器(20)从两个偏振波信号中提取功率集中在特定频率的信号序列,并且接收器(20)对所提取的信号序列进行差分检测并解调控制信息。

    一种发射机、光信号产生方法、装置及系统

    公开(公告)号:WO2014075257A1

    公开(公告)日:2014-05-22

    申请号:PCT/CN2012/084655

    申请日:2012-11-15

    CPC classification number: H04J14/06 H04B10/532

    Abstract: 一种发射机、光信号产生方法、装置及系统,涉及光通信领域,降低了使用成本,简化设备结构,减小升级压力,从而改善了运营商和用户的体验。其方法为:根据第一数据信号获取的第一偏振激光,并将第一偏振激光分为第二偏振激光和第三偏振激光;根据预设的旋转角度将第三偏振激光旋转至第二偏振方向;将第三偏振激光中的第一数据信号擦除,并将第二数据信号调制在第三偏振激光中,得到第四偏振激光;根据预设的旋转角度将第四偏振激光旋转至第三偏振方向,第三偏振方向与第一偏振方向垂直;将第二偏振激光和具有第三偏振方向的第四偏振激光合并为偏振复用光信号。本发明实施例用于产生偏振复用光信号。

    LINEAR DISPERSION POLARIZATION-TIME CODES AND EQUALIZATION IN POLARIZATION MULTIPLEXED COHERENT OPTICAL SYSTEM
    9.
    发明申请
    LINEAR DISPERSION POLARIZATION-TIME CODES AND EQUALIZATION IN POLARIZATION MULTIPLEXED COHERENT OPTICAL SYSTEM 审中-公开
    极化多极化光学系统中的线性分散极化时间代码和均衡

    公开(公告)号:WO2013152739A1

    公开(公告)日:2013-10-17

    申请号:PCT/CN2013/074153

    申请日:2013-04-12

    Abstract: A method of optical communication comprising encoding four modulated symbols to generate four encoded symbols in two orthogonal polarizations and transmitting the four encoded symbols in two successive time slots. An optical communication apparatus comprising a processor configured to receive two sequences of digital symbols in a plurality of time slots, wherein the two sequences correspond to two components of two orthogonal polarizations, wherein one digital symbol per polarization is received in each of the plurality of time slots, divide each of the two sequences into a plurality of groups using a modulo operation of time, wherein each group comprises two digital symbols received in two consecutive time slots, and adaptively equalize the four digital symbols of the two consecutive time slots using a 4x4 matrix to generate four modulated symbols, wherein the 4x4 matrix comprises 16 tap-vectors.

    Abstract translation: 一种光通信方法,包括编码四个调制符号以在两个正交偏振中产生四个编码符号,并在两个连续的时隙中发送四个编码符号。 一种光通信装置,包括被配置为在多个时隙中接收两个数字符号序列的处理器,其中两个序列对应于两个正交偏振的两个分量,其中每个极化中的一个数字符号在多个时间的每一个中被接收 时隙,使用时间的模运算将两个序列中的每一个划分成多个组,其中每个组包括在两个连续时隙中接收的两个数字符号,并且使用4×4自适应地均衡两个连续时隙的四个数字符号 矩阵以产生四个调制符号,其中4×4矩阵包括16个抽头向量。

    METHOD OF OPTICAL DATA TRANSMISSION USING POLARIZATION DIVISION MULTIPLEXING
    10.
    发明申请
    METHOD OF OPTICAL DATA TRANSMISSION USING POLARIZATION DIVISION MULTIPLEXING 审中-公开
    使用极化部分多路复用的光学数据传输方法

    公开(公告)号:WO2012130562A1

    公开(公告)日:2012-10-04

    申请号:PCT/EP2012/053746

    申请日:2012-03-05

    CPC classification number: H04J14/06 H04B10/532 H04B10/614 H04J14/002

    Abstract: Proposed is a method of optical data transmission. The method comprises different steps. A first optical signal and a second optical signal are generated, such that the optical signals possess a same wavelength, respective phases, which are modulated in dependence on respective data values, and respective polarization states, which are essentially orthogonal to each other. A combined optical signal is generated, by combining the optical signals, such that the combined optical signal possesses a polarization state with a predetermined variation. The combined optical signal is transmitter over an optical transmission line and received. Two time-discrete sampled signals are generated, by sampling the received optical signal along two orthogonal polarization planes. Two filtered signals are generated, by filtering the time-discrete sampled signals in the time-discrete domain, using a function that is indicative of the respective predetermined variation. Finally, respective data values are derived from the filtered signals.

    Abstract translation: 提出了一种光数据传输的方法。 该方法包括不同的步骤。 产生第一光信号和第二光信号,使得光信号具有相同的波长,根据相应的数据值调制的各个相位以及基本上彼此正交的相应极化状态。 通过组合光信号来产生组合的光信号,使得组合光信号具有预定变化的偏振状态。 组合的光信号是通过光传输线路发送并接收的。 通过沿两个正交极化平面对接收到的光信号进行采样来产生两个时间离散采样信号。 通过使用表示相应的预定变化的函数对时间离散域中的时间离散采样信号进行滤波来产生两个滤波信号。 最后,从滤波信号导出相应的数据值。

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