公开(公告)号：US20170134120A1

公开(公告)日：2017-05-11

申请号：US15318603

申请日：2015-06-22

Applicant: Xieon Networks S.a.r.l.

Inventor： Stefano CALABRO

IPC: H04L1/00 ,  H04B10/516 ,  H03M13/39 ,  H03M13/27 ,  H03M13/45 ,  H04B10/61 ,  H03M13/29

CPC classification number: H04L1/0055 ,  H03M13/2792 ,  H03M13/2927 ,  H03M13/3905 ,  H03M13/45 ,  H04B10/5161 ,  H04B10/548 ,  H04B10/612 ,  H04B10/6165 ,  H04J14/02 ,  H04L1/0041 ,  H04L1/0058 ,  H04L1/0071

Abstract: Disclosed is a method for decoding an optical data signal. Said optical data signal is phase and amplitude modulated according to a constellation diagram with at least eight constellation points representing non-binary symbols. Said decoding method comprises the following steps: —carrying out a carrier phase recovery of a received signal ignoring the possible occurrence of phase slips, —decoding said signal after phase recovery, wherein in said decoding, possible cycle slips occurring during phase recovery are modelled as virtual input to an equivalent encoder assumed by the decoding scheme. Further disclosed are a related encoding method as well as a receiver and a transmitter.

公开(公告)号：US20190081845A1

公开(公告)日：2019-03-14

申请号：US16083717

申请日：2017-03-22

Applicant: Xieon Networks S.a.r.l.

Inventor： Danish RAFIQUE ,  Stefano CALABRO

IPC: H04L27/34 ,  H04B10/548 ,  H04L1/00 ,  H04L27/36

Abstract: Enclosed herewith is a method for protecting a link in an optical network configured for transmitting digital data employing a predetermined modulation format which comprises a number of symbols in a constellation diagram. A binary address is associated with each symbol. The modulation format allows for a constellation distortion, according to which the relative positions of constellation points in the constellation diagram are varied in a predetermined way by a predetermined degree. The method comprises the steps of: A) partitioning the traffic in two or more priority classes, B) mapping higher priority traffic to predefined bit positions within the binary symbol addresses, C) evaluating the quality of a predetermined protection link, D) determining a degree of distortion such that a desired transmission quality for the transmission of the traffic of the highest priority class or classes via said predetermined protection link and a desired transmission quality for the full traffic via said given link are simultaneously ensured, and E) employing said distorted constellation diagram for transmission of digital data over said given link.

公开(公告)号：US20170054511A1

公开(公告)日：2017-02-23

申请号：US15119072

申请日：2015-03-12

Applicant: XIEON NETWORKS S.a.r.L.

Inventor： Alessandro BIANCIOTTO ,  Stefano CALABRO ,  Maxim KUSCHNEROV ,  Mahdi MEZGHANNI ,  Antonio NAPOLI ,  Bernhard SPINNLER

IPC: H04B10/588 ,  G02F1/225 ,  H04B10/61 ,  H04B10/50 ,  H04B10/079

CPC classification number: H04B10/588 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/0795 ,  H04B10/5053 ,  H04B10/5055 ,  H04B10/61

Abstract: Disclosed herein is a dual parallel Mach-Zehnder-modulator (DPMZM) device comprising a DPMZM 10 having first and second inner MZMs arranged parallel to each other. The first inner MZM generates an in-phase component EI of an optical signal in response to a first driving voltage VI, and the second inner MZM generates a quadrature component EQ of said optical signal in response to a second driving voltage VQ. Further disclosed is a calculation unit 52 configured for receiving an in-phase component yI and a quadrature component yQ_ of a desired base-band signal, and for calculating pre-distorted first and second driving voltages VI, VQ. The calculation of the pre-distorted first and second driving voltages VI, VQ is based on a model of said DPMZM 10 accounting for I-Q cross-talk, and using an algorithm that determines said first and second driving voltages VI, VQ each as a function of both of said in-phase and quadrature components yI, yQ of said base-band signal.

Abstract translation: 本文公开了一种双并联马赫 - 曾德尔调制器（DPMZM）装置，其包括具有彼此平行布置的第一和第二内部MZM的DPMZM 10。 第一内部MZM响应于第一驱动电压VI产生光学信号的同相分量EI，并且第二内部MZM响应于第二驱动电压VQ产生所述光学信号的正交分量EQ。 还公开了一种计算单元52，被配置为接收期望的基带信号的同相分量yI和正交分量yQ_，并且用于计算预失真的第一和第二驱动电压VI，VQ。 预失真的第一和第二驱动电压VI，VQ的计算基于所述DPMZM 10的IQ串扰模型，并且使用将所述第一和第二驱动电压VI，VQ分别确定为功能的算法 所述基带信号的所述同相和正交分量yI，yQ。