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    Optical communication using polarized transmit signal
    1.
    发明授权
    Optical communication using polarized transmit signal 有权
    使用偏振发射信号的光通信

    公开(公告)号：US09374188B2

    公开(公告)日：2016-06-21

    申请号：US12316389

    申请日：2008-12-12

    申请人： René-Jean Essiambre ,  Stefan Weisser ,  Peter J. Winzer ,  Chongjin Xie

    发明人： René-Jean Essiambre ,  Stefan Weisser ,  Peter J. Winzer ,  Chongjin Xie

    IPC分类号： H04B10/00 ,  H04J14/06

    CPC分类号： H04J14/06

    摘要： A WDM system having at least two channels, each of which employs two polarizations, is arranged so that the start times of symbols carried by one polarization of a channel are displaced in time from the start times of symbols carried by the other polarization of that channel, e.g., the start time for each symbol on one polarization is not substantially synchronized with the closest-in-time symbol start time on the other polarization of that channel. Preferably, the data signals are modulated using a return-to-zero (RZ) format and the start times of the symbols of the data signal carried by one polarization of a channel is offset from the start time of the symbols data signal carried by the other polarization of that channel by between 20% to 80%—preferably 50%—of the symbol period of the data signals, when the data signals have the same symbol period.

    摘要翻译： 布置具有至少两个通道的WDM系统，每个通道采用两个极化，以使得通道的一个极化所承载的符号的开始时间从该通道的另一个极化所承载的符号的开始时间的时间偏移 例如，一个极化上的每个符号的开始时间基本上与该通道的另一个极化上的最接近时间符号开始时间同步。 优选地，使用归零（RZ）格式对数据信号进行调制，并且通过信道的一个极化承载的数据信号的符号的开始时间偏离由信道携带的符号数据信号的开始时间 当数据信号具有相同的符号周期时，该信道的其它极化在数据信号的符号周期的20％至80％之间优选地为50％。

    OPTICAL RECEIVER HAVING A SIGNAL-EQUALIZATION CAPABILITY
    2.
    发明申请
    OPTICAL RECEIVER HAVING A SIGNAL-EQUALIZATION CAPABILITY 有权
    具有信号均衡能力的光接收机

    公开(公告)号：US20140086594A1

    公开(公告)日：2014-03-27

    申请号：US13628412

    申请日：2012-09-27

    申请人： Chongjin Xie ,  Peter J. Winzer ,  Stefan Weisser ,  Andreas Leven

    发明人： Chongjin Xie ,  Peter J. Winzer ,  Stefan Weisser ,  Andreas Leven

    IPC分类号： H04B10/06

    CPC分类号： H04B10/6161 ,  H04B10/6162 ,  H04B10/6165

    摘要： In one embodiment, an optical receiver has a bulk dispersion compensator and a butterfly equalizer serially connected to one another to perform dispersion-compensation processing and electronic polarization de-multiplexing. The bulk dispersion compensator has a relatively large dispersion-compensation capacity, but is relatively slow and operates in a quasi-static configuration. The butterfly equalizer has a relatively small dispersion-compensation capacity, but can be dynamically reconfigured on a relatively fast time scale to track the changing conditions in the optical-transport link. The optical receiver has a feedback path that enables the configuration of the bulk dispersion compensator to be changed based on the configuration of the butterfly equalizer in a manner that advantageously enables the receiver to tolerate larger amounts of chromatic dispersion and/or polarization-mode dispersion than without the use of the feedback path.

    摘要翻译： 在一个实施例中，光接收器具有彼此串联连接的体色散补偿器和蝶式均衡器，以执行色散补偿处理和电子偏振解复用。 体积色散补偿器具有相对较大的色散补偿能力，但是相对较慢并且在准静态配置中操作。 蝶形均衡器具有相对较小的色散补偿能力，但是可以在相对较快的时间尺度上动态地重新配置以跟踪光传输链路中的变化条件。 光接收机具有反馈路径，其能够基于蝴蝶均衡器的配置来改变批量色散补偿器的配置，其有利地使得接收器容忍更大量的色散和/或偏振模色散比 而不使用反馈路径。

    Time-interleaved polarization-division-multiplexed transmission systems and transmitters
    3.
    发明申请
    Time-interleaved polarization-division-multiplexed transmission systems and transmitters 有权
    时间交错偏振分复用传输系统和发射机

    公开(公告)号：US20100150559A1

    公开(公告)日：2010-06-17

    申请号：US12316389

    申请日：2008-12-12

    申请人： Rene-Jean Essiambre ,  Stefan Weisser ,  Peter J. Winzer ,  Chongjin Xie

    发明人： Rene-Jean Essiambre ,  Stefan Weisser ,  Peter J. Winzer ,  Chongjin Xie

    IPC分类号： H04J14/02

    CPC分类号： H04J14/06

    摘要： A WDM system having at least two channels, each of which employs two polarizations, is arranged so that the start times of symbols carried by one polarization of a channel are displaced in time from the start times of symbols carried by the other polarization of that channel, e.g., the start time for each symbol on one polarization is not substantially synchronized with the closest-in-time symbol start time on the other polarization of that channel. Preferably, the data signals are modulated using a return-to-zero (RZ) format and the start times of the symbols of the data signal carried by one polarization of a channel is offset from the start time of the symbols data signal carried by the other polarization of that channel by between 20% to 80%—preferably 50%—of the symbol period of the data signals, when the data signals have the same symbol period.

    摘要翻译： 布置具有至少两个通道的WDM系统，每个通道采用两个极化，以使得通道的一个极化所承载的符号的开始时间从该通道的另一个极化所承载的符号的开始时间的时间偏移 例如，一个极化上的每个符号的开始时间基本上与该通道的另一个极化上的最接近时间符号开始时间同步。 优选地，使用归零（RZ）格式对数据信号进行调制，并且通过信道的一个极化承载的数据信号的符号的开始时间偏离由信道携带的符号数据信号的起始时间 当数据信号具有相同的符号周期时，该信道的其它极化在数据信号的符号周期的20％至80％之间优选地为50％。

    Apparatus and method for phase synchronization control in RZ optical transmitter
    7.
    发明授权
    Apparatus and method for phase synchronization control in RZ optical transmitter 失效
    RZ光发射机相位同步控制装置及方法

    公开(公告)号：US07324760B2

    公开(公告)日：2008-01-29

    申请号：US10789586

    申请日：2004-02-27

    申请人： Siegfried Gronbach ,  Stefan Weisser

    发明人： Siegfried Gronbach ,  Stefan Weisser

    IPC分类号： H04B10/04

    CPC分类号： H04B10/5051 ,  H04B10/505 ,  H04B10/50577 ,  H04B10/508

    摘要： An optical RZ transmitter comprises an optical signal source and a pair of electro-optical modulators in tandem, one arranged to receive a NRZ electrical data signal and the other a clock signal at the data rate of the data signal. The phase difference between the data signal and the clock signal is controlled by adding a first dither signal to a bias signal applied to the modulator receiving the data signal, and a second dither signal, having a different frequency, to the phase difference. The amplitude of variations in the power of the optical output signal corresponding to cross-modulation of the first and second dither signals is detected and the phase difference is controlled in response to the detected amplitude.

    摘要翻译： 光学RZ发射器包括串联的光信号源和一对电光调制器，一个被布置成以数据信号的数据速率接收NRZ电数据信号和另一个时钟信号。 数据信号和时钟信号之间的相位差通过将第一抖动信号加到施加到接收数据信号的调制器的偏置信号和具有不同频率的第二抖动信号来控制。 检测对应于第一和第二抖动信号的交叉调制的光输出信号的功率变化的幅度，并根据检测到的幅度来控制相位差。

    POWER ADJUSTMENT OF IN-PHASE AND QUADRATURE COMPONENTS AT A COHERENT OPTICAL RECEIVER
    8.
    发明申请
    POWER ADJUSTMENT OF IN-PHASE AND QUADRATURE COMPONENTS AT A COHERENT OPTICAL RECEIVER 有权
    在相邻光接收机上进行相间和相位分量的功率调整

    公开(公告)号：US20130101300A1

    公开(公告)日：2013-04-25

    申请号：US13637481

    申请日：2011-03-24

    申请人： Stefan Weisser ,  Silvio Cucchi ,  Carlo Costantini ,  Noriaki Kaneda ,  Andreas Leven

    发明人： Stefan Weisser ,  Silvio Cucchi ,  Carlo Costantini ,  Noriaki Kaneda ,  Andreas Leven

    IPC分类号： H04B10/06

    CPC分类号： H04B10/616 ,  H03G3/3084 ,  H04B10/60 ,  H04B10/613 ,  H04B10/6931 ,  H04L27/2096 ,  H04L27/3809 ,  H04L27/3818

    摘要： It is disclosed an optical coherent receiver for an optical communication network. The optical coherent receiver is configured to receive a modulated optical signal and to process it for generating an in-phase component and a quadrature component. The optical coherent receiver comprises a power adjuster in turn comprising a multiplying unit and a retroactively connected digital circuit. The multiplying unit is configured to multiply the in-phase and quadrature components by in-phase and quadrature gains, respectively, thereby providing power-adjusted in-phase and quadrature components. The digital circuit is configured to compute: a common gain indicative of a sum of the powers of the power-adjusted in-phase and quadrature components; a differential gain indicative of a difference between the powers of the power-adjusted in-phase and quadrature components; and the in-phase and quadrature gains as a product and a ratio, respectively, between the common gain and the differential gain.

    摘要翻译： 公开了一种用于光通信网络的光学相干接收机。 光学相干接收器被配置为接收经调制的光信号并且处理它以产生同相分量和正交分量。 光学相干接收机包括功率调节器，其依次包括乘法单元和追溯连接的数字电路。 乘法单元被配置为分别将同相和正交分量乘以同相和正交增益，从而提供功率调整的同相和正交分量。 数字电路被配置为计算：表示功率调整的同相和正交分量的功率之和的公共增益; 指示功率调整的同相和正交分量的功率之间的差的差分增益; 以及同相和正交增益作为公共增益和差分增益之间的乘积和比率。

    Apparatus and method for phase synchronization control in RZ optical transmitter
    9.
    发明申请
    Apparatus and method for phase synchronization control in RZ optical transmitter 失效
    RZ光发射机相位同步控制装置及方法

    公开(公告)号：US20050191060A1

    公开(公告)日：2005-09-01

    申请号：US10789586

    申请日：2004-02-27

    申请人： Siegfried Gronbach ,  Stefan Weisser

    发明人： Siegfried Gronbach ,  Stefan Weisser

    IPC分类号： H04B10/155 ,  H04B10/04

    CPC分类号： H04B10/5051 ,  H04B10/505 ,  H04B10/50577 ,  H04B10/508

    摘要： An optical RZ transmitter comprises an optical signal source and a pair of electro-optical modulators in tandem, one arranged to receive a NRZ electrical data signal and the other a clock signal at the data rate of the data signal. The phase difference between the data signal and the clock signal is controlled by adding a first dither signal to a bias signal applied to the modulator receiving the data signal, and a second dither signal, having a different frequency, to the phase difference. The amplitude of variations in the power of the optical output signal corresponding to cross-modulation of the first and second dither signals is detected and the phase difference is controlled in response to the detected amplitude.

    摘要翻译： 光学RZ发射器包括串联的光信号源和一对电光调制器，一个被布置成以数据信号的数据速率接收NRZ电数据信号和另一个时钟信号。 数据信号和时钟信号之间的相位差通过将第一抖动信号加到施加到接收数据信号的调制器的偏置信号和具有不同频率的第二抖动信号来控制。 检测对应于第一和第二抖动信号的交叉调制的光输出信号的功率变化的幅度，并根据检测到的幅度来控制相位差。