公开(公告)号：US20150086201A1

公开(公告)日：2015-03-26

申请号：US14033126

申请日：2013-09-20

申请人： Alcatel-Lucent USA Inc.

发明人： Roland Ryf ,  René-Jean Essiambre ,  Alan Gnauck

IPC分类号： H04B10/58 ,  H04J14/04 ,  H04B10/2507

CPC分类号： H04B10/58 ,  H04B10/2507 ,  H04B10/2581 ,  H04J14/04

摘要： An apparatus, e.g. an optical device, includes an optical transmitter and a mixer. The transmitter is configured to transmit a plurality of optical data channels that each include at least one spectral component at a same frequency. The mixer is configured to combine a first data channel with a second data channel. The combining is such that first and second optical channels output by the optical transmitter each include contributions from the first and second data channels at the same frequency.

摘要翻译： 一种装置，例如 光学装置包括光发射机和混频器。 发射机被配置为发送多个光数据信道，每个光数据信道包括相同频率的至少一个频谱分量。 混合器被配置为将第一数据信道与第二数据信道组合。 组合使得由光发射机输出的第一和第二光学信道各自包括来自第一和第二数据信道的相同频率的贡献。

公开(公告)号：US10333621B2

公开(公告)日：2019-06-25

申请号：US15434687

申请日：2017-02-16

申请人： Alcatel-Lucent USA Inc.

发明人： René-Jean Essiambre ,  Chongjin Xie

IPC分类号： H04B10/40 ,  H04B10/58 ,  H04B10/69 ,  H04B10/2543 ,  H04B10/61

摘要： We disclose an optical transport system configured to reduce nonlinear signal distortions using an electronic phase rotation, the phase value of which is determined using pre-filtering, e.g., via a low-pass filter, of the digital samples representing an optical communication signal prior to applying a squaring operation to the digital samples. In some embodiments, the phase value used in the electronic phase rotation can be determined using double filtering of the digital samples that, in addition to the pre-filtering, employs post-filtering, e.g., via another low-pass filter, of the digital samples generated by the squaring operation. The electronic phase rotation can be implemented as part of a backward-propagation algorithm that, in addition to reducing the nonlinear signal distortions, provides at least partial dispersion compensation. In various embodiments, the corresponding backward-propagation module can be incorporated into the transmitter's digital signal processor (DSP) or the receiver's DSP.

公开(公告)号：US20170237498A1

公开(公告)日：2017-08-17

申请号：US15434687

申请日：2017-02-16

申请人： Alcatel-Lucent USA Inc.

发明人： René-Jean Essiambre ,  Chongjin Xie

IPC分类号： H04B10/40 ,  H04B10/69 ,  H04B10/58

CPC分类号： H04B10/2543 ,  H04B10/614 ,  H04B10/6163

摘要： We disclose an optical transport system configured to reduce nonlinear signal distortions using an electronic phase rotation, the phase value of which is determined using pre-filtering, e.g., via a low-pass filter, of the digital samples representing an optical communication signal prior to applying a squaring operation to the digital samples. In some embodiments, the phase value used in the electronic phase rotation can be determined using double filtering of the digital samples that, in addition to the pre-filtering, employs post-filtering, e.g., via another low-pass filter, of the digital samples generated by the squaring operation. The electronic phase rotation can be implemented as part of a backward-propagation algorithm that, in addition to reducing the nonlinear signal distortions, provides at least partial dispersion compensation. In various embodiments, the corresponding backward-propagation module can be incorporated into the transmitter's digital signal processor (DSP) or the receiver's DSP.