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11 条记录 (耗时 0.03 秒)

    Hybrid Raman/erbium-doped fiber amplifier and transmission system with dispersion map
    5.
    发明授权
    Hybrid Raman/erbium-doped fiber amplifier and transmission system with dispersion map 失效
    混合拉曼/掺铒光纤放大器和传输系统的色散图

    公开(公告)号：US07085039B2

    公开(公告)日：2006-08-01

    申请号：US10389373

    申请日：2003-03-14

    申请人： Dmitri Foursa ,  Morten Nissov ,  Alexei N. Pilipetskii ,  Michael A. Mills ,  Chinlon Lin ,  Bo Pedersen

    发明人： Dmitri Foursa ,  Morten Nissov ,  Alexei N. Pilipetskii ,  Michael A. Mills ,  Chinlon Lin ,  Bo Pedersen

    IPC分类号： H04B10/12

    CPC分类号： H01S3/06754 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/1608 ,  H01S3/2375 ,  H01S3/302 ,  H01S2301/04

    摘要： A hybrid Raman-EDFA provides gain equalization over the C-band and L-band. The hybrid Raman-EDFA includes a Raman section producing a Raman gain and an EDFA section producing an EDFA gain complementing the Raman gain. The EDFA section preferably includes a highly inverted, single-stage EDFA to produce the complementing EDFA gain shape. One embodiment of the EDFA section includes a high return loss termination located after the erbium fiber to receive unabsorbed pump power. Multiple hybrid Raman-EDFAs can be connected in an amplifier chain in a transmission system. The transmission system preferably provides a dispersion map including regular composite fiber spans followed by at least one compensating span of negative dispersion fibers. The Raman sections of the hybrid Raman-EDFAs are preferably coupled to negative dispersion fiber in the transmission system.

    摘要翻译： 混合拉曼EDFA提供C波段和L波段的增益均衡。 混合拉曼EDFA包括产生拉曼增益的拉曼部分和产生补偿拉曼增益的EDFA增益的EDFA部分。 EDFA部分优选地包括高反转的单级EDFA以产生补充EDFA增益形状。 EDFA部分的一个实施例包括位于铒光纤之后的高回波损耗终端以接收未吸收的泵浦功率。 多个混合拉曼EDFA可以连接在传输系统的放大器链中。 传输系统优选地提供包括常规复合纤维跨度的色散图，随后是负色散光纤的至少一个补偿跨度。 混合拉曼EDFA的拉曼段优选耦合到传输系统中的负色散光纤。

    System and method for controlling optical amplifier pumps
    6.
    发明授权
    System and method for controlling optical amplifier pumps 失效
    控制光放大器泵的系统和方法

    公开(公告)号：US06721091B2

    公开(公告)日：2004-04-13

    申请号：US10171320

    申请日：2002-06-13

    申请人： Dmitri Foursa ,  Morten Nissov

    发明人： Dmitri Foursa ,  Morten Nissov

    IPC分类号： H04B1012

    CPC分类号： H04B10/296 ,  H04B10/2916 ,  H04B10/2935

    摘要： A system and method for controlling optical amplifier pumps. A path average intensity detector is provided for detecting a path average intensity for transmitted optical signals. In response to the detected path average intensity or a variation in path average intensity, a pump parameter controller dynamically adjusts at least one pump parameter of at least one amplifier to achieve a desired path average intensity.

    摘要翻译： 一种用于控制光放大器泵的系统和方法。 路径平均强度检测器被提供用于检测传输的光信号的路径平均强度。 响应于检测到的路径平均强度或路径平均强度的变化，泵参数控制器动态调整至少一个放大器的至少一个泵参数以实现期望的路径平均强度。

    PILOT SYMBOL AIDED CARRIER PHASE ESTIMATION
    7.
    发明申请
    PILOT SYMBOL AIDED CARRIER PHASE ESTIMATION 有权
    引导符号辅助载波相位估计

    公开(公告)号：US20110274442A1

    公开(公告)日：2011-11-10

    申请号：US12775770

    申请日：2010-05-07

    申请人： Hongbin Zhang ,  Dmitri Foursa

    发明人： Hongbin Zhang ,  Dmitri Foursa

    IPC分类号： H04B10/06

    CPC分类号： H04B10/616 ,  H04B10/0779 ,  H04B10/61 ,  H04B10/6165 ,  H04B2210/074

    摘要： Methods and systems for processing an optical signal in a communication system are disclosed. The disclosed methods yield benefits for estimation and tracking of carrier phase of received signals at a digital coherent receiver. Specifically, phase ambiguity is removed by the insertion of pilot symbols into a transmitted data stream. Pilot symbols are detected from a received signal, and carrier phase is estimated for the detected pilot symbols. If carrier phase track of received data symbols was lost, a correction is applied to recover the track. Coherent symbol decoding may be used which has not been possible with prior art techniques due to the possibility of phase tracking loss.

    摘要翻译： 公开了一种在通信系统中处理光信号的方法和系统。 所公开的方法对在数字相干接收机处的接收信号的载波相位的估计和跟踪产生益处。 具体地，通过将​​导频符号插入到发送的数据流中来消除相位模糊。 从接收的信号检测导频符号，并且针对检测到的导频符号估计载波相位。 如果接收到的数据符号的载波相位轨迹丢失，则应用修正来恢复轨道。 可以使用由于相位跟踪损失的可能性而使现有技术不可能的相干符号解码。

    PILOT SYMBOL AIDED CARRIER PHASE ESTIMATION
    8.
    发明申请
    PILOT SYMBOL AIDED CARRIER PHASE ESTIMATION 审中-公开
    引导符号辅助载波相位估计

    公开(公告)号：US20140010532A1

    公开(公告)日：2014-01-09

    申请号：US14027514

    申请日：2013-09-16

    申请人： Hongbin Zhang ,  Dmitri Foursa

    发明人： Hongbin Zhang ,  Dmitri Foursa

    IPC分类号： H04B10/61

    CPC分类号： H04B10/616 ,  H04B10/0779 ,  H04B10/61 ,  H04B10/6165 ,  H04B2210/074

    摘要： Methods and systems for processing an optical signal in a communication system are disclosed. The disclosed methods yield benefits for estimation and tracking of carrier phase of received signals at a digital coherent receiver. Specifically, phase ambiguity is removed by the insertion of pilot symbols into a transmitted data stream. Pilot symbols are detected from a received signal, and carrier phase is estimated for the detected pilot symbols. If carrier phase track of received data symbols was lost, a correction is applied to recover the track. Coherent symbol decoding may be used which has not been possible with prior art techniques due to the possibility of phase tracking loss.

    摘要翻译： 公开了一种在通信系统中处理光信号的方法和系统。 所公开的方法对在数字相干接收机处的接收信号的载波相位的估计和跟踪产生益处。 具体地，通过将​​导频符号插入到发送的数据流中来消除相位模糊。 从接收的信号检测导频符号，并且针对检测到的导频符号估计载波相位。 如果接收到的数据符号的载波相位轨迹丢失，则应用修正来恢复轨道。 可以使用由于相位跟踪损失的可能性而使现有技术不可能的相干符号解码。

    Pilot symbol aided carrier phase estimation
    9.
    发明授权
    Pilot symbol aided carrier phase estimation 有权
    导频符号辅助载波相位估计

    公开(公告)号：US08588624B2

    公开(公告)日：2013-11-19

    申请号：US12775770

    申请日：2010-05-07

    申请人： Hongbin Zhang ,  Dmitri Foursa

    发明人： Hongbin Zhang ,  Dmitri Foursa

    IPC分类号： H04B10/66

    CPC分类号： H04B10/616 ,  H04B10/0779 ,  H04B10/61 ,  H04B10/6165 ,  H04B2210/074

    摘要： Methods and systems for processing an optical signal in a communication system are disclosed. The disclosed methods yield benefits for estimation and tracking of carrier phase of received signals at a digital coherent receiver. Specifically, phase ambiguity is removed by the insertion of pilot symbols into a transmitted data stream. Pilot symbols are detected from a received signal, and carrier phase is estimated for the detected pilot symbols. If carrier phase track of received data symbols was lost, a correction is applied to recover the track. Coherent symbol decoding may be used which has not been possible with prior art techniques due to the possibility of phase tracking loss.

    摘要翻译： 公开了一种在通信系统中处理光信号的方法和系统。 所公开的方法对在数字相干接收机处的接收信号的载波相位的估计和跟踪产生益处。 具体地，通过将​​导频符号插入到发送的数据流中来消除相位模糊。 从接收的信号检测导频符号，并且针对检测到的导频符号估计载波相位。 如果接收到的数据符号的载波相位轨迹丢失，则应用修正来恢复轨道。 可以使用由于相位跟踪损失的可能性而使现有技术不可能的相干符号解码。

    Raman fiber amplifier using a wide bandwidth continuous wave pump
    10.
    发明授权
    Raman fiber amplifier using a wide bandwidth continuous wave pump 失效
    拉曼光纤放大器采用宽带连续波泵

    公开(公告)号：US06717963B1

    公开(公告)日：2004-04-06

    申请号：US09616410

    申请日：2000-07-14

    申请人： Dmitri Foursa

    发明人： Dmitri Foursa

    IPC分类号： H01S330

    CPC分类号： H04B10/2916 ,  H01S3/094003 ,  H01S3/302

    摘要： A method and system by which a wide bandwidth continuous wave (CW) or substantially continuous wave composite (SCWC) pump with a flat spectrum is utilized to amplify an information-carrying signal. By using a wide bandwidth CW pump, substantially no ripple is introduced to the signal being amplified by the Raman amplifier.

    摘要翻译： 利用具有平坦频谱的宽带宽连续波（CW）或基本连续波复合（SCWC）泵来放大信息携带信号的方法和系统。 通过使用宽带CW泵，基本上没有纹波被引入被拉曼放大器放大的信号。