公开(公告)号：US09515745B2

公开(公告)日：2016-12-06

申请号：US14198858

申请日：2014-03-06

Applicant: Cisco Technology, Inc.

Inventor： Gabriella Bosco ,  Monica Visintin ,  Pierluigi Poggiolini ,  Fabrizio Forghieri ,  Andrea Carena ,  Vittorio Curri

IPC: H04B10/00 ,  H04B10/12 ,  H04B10/06 ,  H04B10/61

CPC classification number: H04B10/6162

Abstract: A coherent optical receiver including an optical transducer, an adaptive filter, and a processor updates the adaptive filter according to a metric derived in Stokes space. The optical transducer receives an optical signal corresponding to a modulated signal of symbols. The optical transducer also determines a first signal corresponding to a first polarization of the optical signal and a second signal corresponding to a second polarization of the optical signal. The adaptive filter recovers a first equalized signal and a second equalized signal from the first signal and the second signal. The first equalized signal and the second equalized signal form an equalized modulated signal of symbols. The processor calculates a set of Stokes parameters from the equalized modulated signal and updates the adaptive filter based on a metric derived from the set of Stokes parameters.

Abstract translation: 包括光学换能器，自适应滤波器和处理器的相干光学接收机根据在斯托克斯空间中导出的度量来更新自适应滤波器。 光学传感器接收对应于符号调制信号的光信号。 光学换能器还确定对应于光信号的第一偏振的第一信号和对应于光信号的第二偏振的第二信号。 自适应滤波器从第一信号和第二信号中恢复第一均衡信号和第二均衡信号。 第一均衡信号和第二均衡信号形成符号的均衡调制信号。 处理器从均衡调制信号计算一组斯托克斯参数，并根据从斯托克斯参数集合导出的度量来更新自适应滤波器。

公开(公告)号：US20150256268A1

公开(公告)日：2015-09-10

申请号：US14198858

申请日：2014-03-06

Applicant: Cisco Technology, Inc.

Inventor： Gabriella Bosco ,  Monica Visintin ,  Pierluigi Poggiolini ,  Fabrizio Forghieri ,  Andrea Carena ,  Vittorio Curri

IPC: H04B10/61

CPC classification number: H04B10/6162

Abstract: A coherent optical receiver including an optical transducer, an adaptive filter, and a processor updates the adaptive filter according to a metric derived in Stokes space. The optical transducer receives an optical signal corresponding to a modulated signal of symbols. The optical transducer also determines a first signal corresponding to a first polarization of the optical signal and a second signal corresponding to a second polarization of the optical signal. The adaptive filter recovers a first equalized signal and a second equalized signal from the first signal and the second signal. The first equalized signal and the second equalized signal form an equalized modulated signal of symbols. The processor calculates a set of Stokes parameters from the equalized modulated signal and updates the adaptive filter based on a metric derived from the set of Stokes parameters.

Abstract translation: 包括光学换能器，自适应滤波器和处理器的相干光学接收机根据在斯托克斯空间中导出的度量来更新自适应滤波器。 光学传感器接收对应于符号调制信号的光信号。 光学换能器还确定对应于光信号的第一偏振的第一信号和对应于光信号的第二偏振的第二信号。 自适应滤波器从第一信号和第二信号中恢复第一均衡信号和第二均衡信号。 第一均衡信号和第二均衡信号形成符号的均衡调制信号。 处理器从均衡调制信号计算一组斯托克斯参数，并根据从斯托克斯参数集合导出的度量来更新自适应滤波器。