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    • 1. 发明授权
    • Short-term optical recovery systems and methods for coherent optical receivers
    • 用于相干光接收机的短期光学恢复系统和方法
    • US09100116B2
    • 2015-08-04
    • US13216941
    • 2011-08-24
    • Hamid MehrvarSalih JasarevicBernard ThiboutotDavid Doucet
    • Hamid MehrvarSalih JasarevicBernard ThiboutotDavid Doucet
    • H04B10/06H04B10/032H04B10/61
    • H04B10/03H04B10/032H04B10/6161
    • The present disclosure provides short-term optical recovery systems and methods in coherent optical receivers to minimize recovery time for fault scenarios and signal reacquisition while maintaining robust signal acquisition. The short-term optical recovery systems and methods include special techniques and algorithms to minimize recovery time. The short-term optical recovery systems and methods include an expedited acquisition engine that includes a reference clock recovery, a compensator to remove chromatic dispersion, a burst framer, and a compensator to remove polarization dispersion. Importantly, the expedited acquisition engine uses a memory-oriented architecture to allow some properties of the acquisition engine to be stored during initial acquisition and, hence, later on be deployed in any fault scenario to further expedite recovery of a signal. The expedited acquisition engine leverages on a frequency aligned Local Oscillator (LO) as well as pre-calculated dispersion maps and equalizer coefficients.
    • 本公开提供了相干光接收机中的短期光学恢复系统和方法,以最小化故障场景的恢复时间和信号重新采集,同时保持鲁棒的信号采集。 短期光学恢复系统和方法包括特殊技术和算法,以最大限度地减少恢复时间。 短期光学恢复系统和方法包括加速采集引擎,其包括参考时钟恢复,用于去除色散的补偿器,突发成帧器和补偿器以去除偏振色散。 重要的是,加速采集引擎使用面向内存的架构,以允许在初始采集期间存储采集引擎的某些属性,并且因此随后部署在任何故障场景中以进一步加速信号的恢复。 加速采集引擎利用频率对准的本地振荡器(LO)以及预先计算的色散映射和均衡器系数。
    • 2. 发明授权
    • Method and apparatus for in-service optimization of the performance of an optical transmission system
    • 用于光传输系统性能的在线优化的方法和装置
    • US06697577B1
    • 2004-02-24
    • US09431165
    • 1999-11-01
    • Jinghui LiHugues TournierJoel MilgramSuet YuenLeRoy PickStephen RobertsBernard Thiboutot
    • Jinghui LiHugues TournierJoel MilgramSuet YuenLeRoy PickStephen RobertsBernard Thiboutot
    • H04B1006
    • H04B10/695H04B2210/078
    • A tuning system for use in a receiver of an optical transmission system. The receiver includes a data channel transporting a data signal and a monitoring channel transporting a copy of the data signal. The tuning system includes a processing module for processing the copy of the data signal to generate a control signal conveying tuning information. This tuning information is used by the receiver to alter an operating point of the receiver on the data channel. The operating point of the receiver that is susceptible to be altered by the control signal is a decision threshold applied on the data signal to discriminate one binary value from another binary value on the data channel of the receiver. This approach allows, when required or desired, tuning of the system while the system is in service. This is possible since the tuning of the system is performed using the monitoring channel, and does not disturb nor corrupt the actual data being transported on the data channel.
    • 一种用于光传输系统的接收机的调谐系统。 接收机包括传送数据信号的数据信道和传送数据信号的副本的监视信道。 调谐系统包括用于处理数据信号的副本以产生传送调谐信息的控制信号的处理模块。 该调谐信息被接收机用于改变数据信道上接收机的工作点。 容易被控制信号改变的接收机的工作点是施加在数据信号上的判定阈值,以将一个二进制值与接收机的数据信道上的另一个二进制值进行区分。 当需要或期望时,该方法允许在系统使用时调整系统。 这是可能的,因为系统的调谐是使用监视通道执行的,并且不会干扰或损坏在数据通道上传送的实际数据。
    • 4. 发明申请
    • SHORT-TERM OPTICAL RECOVERY SYSTEMS AND METHODS FOR COHERENT OPTICAL RECEIVERS
    • 短期光学恢复系统和相关光接收机的方法
    • US20130051809A1
    • 2013-02-28
    • US13216941
    • 2011-08-24
    • Hamid MEHRVARSalih JasarevicBernard ThiboutotDavid Doucet
    • Hamid MEHRVARSalih JasarevicBernard ThiboutotDavid Doucet
    • H04B10/06
    • H04B10/03H04B10/032H04B10/6161
    • The present disclosure provides short-term optical recovery systems and methods in coherent optical receivers to minimize recovery time for fault scenarios and signal reacquisition while maintaining robust signal acquisition. The short-term optical recovery systems and methods include special techniques and algorithms to minimize recovery time. The short-term optical recovery systems and methods include an expedited acquisition engine that includes a reference clock recovery, a compensator to remove chromatic dispersion, a burst framer, and a compensator to remove polarization dispersion. Importantly, the expedited acquisition engine uses a memory-oriented architecture to allow some properties of the acquisition engine to be stored during initial acquisition and, hence, later on be deployed in any fault scenario to further expedite recovery of a signal. The expedited acquisition engine leverages on a frequency aligned Local Oscillator (LO) as well as pre-calculated dispersion maps and equalizer coefficients.
    • 本公开提供了相干光接收机中的短期光学恢复系统和方法,以最小化故障场景的恢复时间和信号重新采集,同时保持鲁棒的信号采集。 短期光学恢复系统和方法包括特殊技术和算法,以最大限度地减少恢复时间。 短期光学恢复系统和方法包括加速采集引擎,其包括参考时钟恢复,用于去除色散的补偿器,突发成帧器和补偿器以去除偏振色散。 重要的是,加速采集引擎使用面向内存的架构,以允许在初始采集期间存储采集引擎的某些属性,并且因此随后部署在任何故障场景中以进一步加速信号的恢复。 加速采集引擎利用频率对准的本地振荡器(LO)以及预先计算的色散映射和均衡器系数。