公开(公告)号：US20110249981A1

公开(公告)日：2011-10-13

申请号：US12758422

申请日：2010-04-12

申请人： Andrew DECZKY ,  Mark Edward Rollins ,  Christian Bourget

发明人： Andrew DECZKY ,  Mark Edward Rollins ,  Christian Bourget

IPC分类号： H04B10/06

CPC分类号： H04B10/614

摘要： The present disclosure relates to coherent optical receiver systems and methods for determining and correcting for optical angle and magnitude imbalance and for delay imbalance between quadrature paths. The present invention iteratively determines and corrects imbalance error and differential delay entirely in the digital domain (after an analog to digital conversion) in the presence of all the other impairments (polarization mode dispersion, chromatic dispersion, polarization gain imbalance, and polarization delay imbalance) using only the corrupted received signal during normal operation, i.e. without the use of training data. The present invention provides an effective adaptive scheme to drive impairments to zero, without using of any calibration of training, and may be applied during normal operation of the receiver via electrical circuitry or the like.

摘要翻译： 本公开涉及用于确定和校正光学角度和幅度不平衡以及正交路径之间的延迟不平衡的相干光接收机系统和方法。 本发明在存在所有其他损伤（偏振模色散，色散，极化增益不平衡和极化延迟不平衡）的情况下，在数字域（模数转换之后）中全部迭代地确定和校正不平衡误差和差分延迟， 在正常操作期间仅使用损坏的接收信号，即不使用训练数据。 本发明提供了一种有效的自适应方案，以将伤害驱动为零，而不使用任何训练校准，并且可以在接收机的正常操作期间通过电路等施加。

公开(公告)号：US20110268459A1

公开(公告)日：2011-11-03

申请号：US12772699

申请日：2010-05-03

申请人： Mark Edward ROLLINS ,  Andrew DECZKY

发明人： Mark Edward ROLLINS ,  Andrew DECZKY

IPC分类号： H04L7/00 ,  H04B10/06

CPC分类号： H04L7/0054 ,  H04B10/299 ,  H04B10/66 ,  H04J14/06 ,  H04L7/0029

摘要： The present disclosure provides timing recovery in optical systems in the presence of chromatic dispersion (CD), polarization mode dispersion (PMD), and polarization dependent loss (PDL) and to optimization of equalization settings based upon timing recovery moment strengths. A stable timing point may be determined in the presence of PMD and PDL impairments, even when the direct estimate of timing becomes unreliable. This determination may be performed entirely in the digital domain providing precise, predictable performance. Also, the present invention utilizes a monotonic relationship between the timing metric and CD setting error to provide directed search in setting the CD equalizer thereby reducing significantly the overall search effort in optimizing CD equalizer settings. This utilizes computations already performed by the transceiver for timing recovery function yielding a computational advantage over competing methods.

摘要翻译： 本公开提供了在存在色散（CD），偏振模色散（PMD）和偏振相关损耗（PDL）的情况下在光学系统中的定时恢复以及基于定时恢复力矩优化的均衡设置的优化。 即使当定时的直接估计变得不可靠时，也可以在存在PMD和PDL损伤的情况下确定稳定的定时点。 该确定可以完全在数字域中执行，提供精确的，可预测的性能。 此外，本发明利用时间度量和CD设置误差之间的单调关系，在设置CD均衡器时提供定向搜索，从而显着减少优化CD均衡器设置的整体搜索工作。 这利用已经由收发器执行的计时恢复功能产生比竞争方法的计算优势。