公开(公告)号：US09020364B2

公开(公告)日：2015-04-28

申请号：US13628412

申请日：2012-09-27

Applicant: Alcatel-Lucent

Inventor： Chongjin Xie ,  Peter J. Winzer ,  Stefan Weisser ,  Andreas Leven

IPC: H04B10/61

CPC classification number: H04B10/6161 ,  H04B10/6162 ,  H04B10/6165

Abstract: In one embodiment, an optical receiver has a bulk dispersion compensator and a butterfly equalizer serially connected to one another to perform dispersion-compensation processing and electronic polarization de-multiplexing. The bulk dispersion compensator has a relatively large dispersion-compensation capacity, but is relatively slow and operates in a quasi-static configuration. The butterfly equalizer has a relatively small dispersion-compensation capacity, but can be dynamically reconfigured on a relatively fast time scale to track the changing conditions in the optical-transport link. The optical receiver has a feedback path that enables the configuration of the bulk dispersion compensator to be changed based on the configuration of the butterfly equalizer in a manner that advantageously enables the receiver to tolerate larger amounts of chromatic dispersion and/or polarization-mode dispersion than without the use of the feedback path.

Abstract translation: 在一个实施例中，光接收器具有彼此串联连接的体色散补偿器和蝶式均衡器，以执行色散补偿处理和电子偏振解复用。 体积色散补偿器具有相对较大的色散补偿能力，但是相对较慢并且在准静态配置中操作。 蝶形均衡器具有相对较小的色散补偿能力，但是可以在相对较快的时间尺度上动态地重新配置以跟踪光传输链路中的变化条件。 光接收机具有反馈路径，其能够基于蝴蝶均衡器的配置来改变批量色散补偿器的配置，其有利地使得接收器容忍更大量的色散和/或偏振模色散比 而不使用反馈路径。

公开(公告)号：US20140195878A1

公开(公告)日：2014-07-10

申请号：US14122290

申请日：2012-06-15

Applicant: ALCATEL LUCENT

Inventor： Luca Razzetti ,  Carlo Costantini ,  Marianna Pepe ,  Andreas Leven ,  Stephan Ten Brink ,  Laurent Schmalen

IPC: H04L1/00

CPC classification number: H04L1/0045 ,  H04B10/6165 ,  H04L1/0047 ,  H04L1/005 ,  H04L1/0054 ,  H04L1/0057

Abstract: Proposed is a method of decoding a differentially encoded PSK modulated optical data signal carrying FEC encoded data values. The optical signal is corrected by an estimated phase offset. From the corrected signal, respective likelihood values for the FEC encoded data values are derived, using an estimation algorithm which accounts for a differential encoding rule used for differentially encoding the optical signal. The derived likelihood values are limited to a predetermined range of values. From the limited likelihood values, FEC decoded data values are derived, using an algorithm which accounts for a FEC encoding rule used for FEC encoding the FEC encoded data values.

Abstract translation: 提出了对携带FEC编码数据值的差分编码的PSK调制光数据信号进行解码的方法。 光信号通过估计的相位偏移来校正。 从校正的信号中，使用考虑用于对光信号进行差分编码的差分编码规则的估计算法，导出FEC编码数据值的相应似然值。 导出的似然值被限制在预定的值范围内。 从有限似然值中，使用考虑用于FEC编码FEC编码数据值的FEC编码规则的算法导出FEC解码数据值。

公开(公告)号：US10419364B2

公开(公告)日：2019-09-17

申请号：US15749569

申请日：2016-09-13

Applicant: Alcatel Lucent

Inventor： Andreas Leven ,  Lars Dembeck ,  Juergen Loehr

IPC: H04B10/00 ,  H04L12/939 ,  H04L12/935 ,  H04Q11/00 ,  H04B10/038

Abstract: The embodiments of the invention relate to a line switching component separable from a line card of a network node. The line switching component contains at least one input port for receiving an optical input signal from an optical transport network and at least one output port for transmitting an optical output signal to the optical transport network. The line switching component further contains at least one further output port configured to be connected to an input port of at least one optical interface of the line card and at least one further input port configured to be connected to an output port of the at least one further optical interface of the line card. The line switching component further contains a switchable optical path system configured to operate the line switching component in a first operation mode and to operate the line switching component in a second operation mode.

公开(公告)号：US10193658B2

公开(公告)日：2019-01-29

申请号：US15564893

申请日：2016-04-22

Applicant: Alcatel Lucent

Inventor： Fred Buchali ,  Laurent Schmalen ,  Roman Dischler ,  Lars Dembeck ,  Andreas Leven

IPC: H04L1/00 ,  H04B10/29

Abstract: Embodiments relate to an apparatus for a regenerative network node between a first and a second link portion. The apparatus comprises an input configured to receive, from the first link portion, a signal impaired by the first link portion, the signal including a data packet with a Forward Error Correction (FEC) encoded payload portion and a header portion. The apparatus comprises a signal regeneration unit configured to mitigate signal impairments of the first link portion to provide a regenerated FEC encoded payload portion. The apparatus comprises a processing unit configured to extract destination information in the data packet's header portion. If extracted destination information indicates that the data packet's destination is the regenerative network node, the data packet's regenerated FEC encoded payload portion is forwarded to a decoding unit of the regenerative network node. Else, the data packet's regenerated FEC encoded payload portion is forwarded to the second link portion.

公开(公告)号：US20150155952A1

公开(公告)日：2015-06-04

申请号：US14406590

申请日：2013-06-19

Applicant: Alcatel Lucent

Inventor： Eugen Lach ,  Andreas Leven

IPC: H04B10/61 ,  H04B10/2575 ,  H04B10/50

CPC classification number: H04B10/616 ,  H04B10/2575 ,  H04B10/275 ,  H04B10/503 ,  H04B10/61 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0227 ,  H04J14/0283

Abstract: In order to provide very fast tuning of an coherent optical receiver, an apparatus for use in optical telecommunications includes a coherent optical receiver with a converter stage adapted to convert a received optical signal to an electrical signal by down-converting the received optical signal in frequency using a local oscillator signal, an analog/digital converter stage adapted to sample the converted signal, a digital processor adapted to process the sampled signal to restore a transmitted data signal, and a wavelength selector adapted to select from a distribution network an unmodulated light signal at a configurable wavelength for use as the local oscillator signal. The distribution network is an optical bus system in the form of a fiber ring.

Abstract translation: 为了提供相干光接收机的非常快速的调谐，用于光通信的装置包括具有转换器级的相干光接收机，其适用于通过对所接收的光信号进行下变频来将接收的光信号转换为电信号 使用本地振荡器信号，适于对转换的信号进行采样的模/数转换器级，适于处理采样信号以恢复所发送的数据信号的数字处理器，以及适于从分配网络选择未调制的光信号的波长选择器 在可配置的波长下用作本地振荡器信号。 分配网络是以光纤环形式的光总线系统。