公开(公告)号：US20190081726A1

公开(公告)日：2019-03-14

申请号：US16084461

申请日：2017-03-14

Applicant: Xieon Networks S.à.r.l.

Inventor： Danish RAFIQUE ,  Bernhard SPINNLER

IPC: H04J14/06 ,  H04B10/61 ,  H04L27/20

Abstract: Disclosed is a receiver for receiving an optical signal comprising a plurality of carriers within a predetermined frequency band. The receiver comprises means for sampling and converting each of the carriers into a set of corresponding digital signals, and a digital processing unit for processing said digital signals of said set of digital signals such as to mitigate transmission impairments of the corresponding optical carriers based on corresponding processing parameters. The digital processing unit is configured for determining such processing parameters by carrying out a corresponding parameter derivation procedure based on one of the digital signals of said set of digital signals. The processing unit is configured for sharing thus determined processing parameters for processing of other digital signals among said set of digital signals based on said shared determined processing parameters, or processing parameters derived from said shared determined processing parameters.

公开(公告)号：US20190199442A1

公开(公告)日：2019-06-27

申请号：US16286147

申请日：2019-02-26

Applicant: Xieon Networks S.à.r.l.

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

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

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.

公开(公告)号：US20180159652A1

公开(公告)日：2018-06-07

申请号：US15578543

申请日：2016-06-29

Applicant: Xieon Networks S.à.r.l.

Inventor： Stefano CALABRO ,  Bernhard SPINNLER

IPC: H04J14/06 ,  H04B10/61 ,  H04B7/0413 ,  H04B10/69

CPC classification number: H04J14/06 ,  H04B7/0413 ,  H04B10/2569 ,  H04B10/6161 ,  H04B10/6162 ,  H04B10/6165 ,  H04B10/6971

Abstract: The present invention relates to signal processing in an optical receiver, in particular to equalization performed in coherent optical receivers. A multiple-input multiple-output (MIMO) equalizer receives and equalizes a plurality of real value signals, for example four sampled electrical baseband tributaries (HI, HQ, VI, VQ). The outputs of the multiple-input multiple-output (MIMO) equalizer provide equalized real or imaginary components of complex signals. The complex signals including the real and imaginary components are then each and individually equalized to remove chromatic dispersion.

公开(公告)号：US20170324429A1

公开(公告)日：2017-11-09

申请号：US15533912

申请日：2015-12-18

Applicant: Xieon Networks S.à.r.l.

Inventor： Heinrich VON KIRCHBAUER ,  Stephan WITTE ,  Stefano CALABRO ,  Bernhard SPINNLER

IPC: H03M13/29

CPC classification number: H03M13/2906 ,  H03M13/1108 ,  H03M13/1111 ,  H03M13/1174 ,  H03M13/1191 ,  H03M13/27

Abstract: Disclosed herein is an encoder for encoding digital data, said encoder comprising one or more component encoders, one or more interconnections between component encoders, one or more inputs and one or more outputs. The encoder is configured to carry out the following steps:—combining internal input bits received via an interconnection and external input bits received via a corresponding input, to assemble a local information word,—encoding the local information word such as to generate a local code word,—outputting a reduced local code word and handing the same reduced local code word over to said interconnect for forwarding said same reduced local code word via said interconnect to another component encoder or to itself, wherein said encoder is configured to forward on each interconnect the bits of the reduced local code in parallel but with delays that are mutually different for at least a subset of the reduced local code word bits.

公开(公告)号：US20170264389A1

公开(公告)日：2017-09-14

申请号：US15529027

申请日：2015-12-02

Applicant: Xieon Networks S.à.r.l.

Inventor： Stefano CALABRO ,  Bernhard SPINNLER

IPC: H04J14/06 ,  H04B10/50 ,  G02F1/225

CPC classification number: H04J14/06 ,  G02F1/0123 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/58 ,  G02F2203/07 ,  H04B10/5053 ,  H04B10/50572

Abstract: Disclosed herein is a modulator (50) for polarization-division multiplexing (PDM) transmission. The modulator (50) comprises first and second DP-MZMs (12, 28) associated with first and second polarizations, each DP-MZM (12, 28) having an input for an in-phase and a quadrature driving signal for modulating the in-phase and quadrature components of an optical signal according to respective transfer functions, and a detector (58) suitable for detecting light comprising at least a portion of the light outputted by the first DP-MZM (12) and a portion of the light outputted by the second DP-MZM (28). The modulator (50) is adapted to superimpose a first pilot signal on one of the in-phase and quadrature driving signals of the first DP-MZM (12) and on one of the in-phase and quadrature driving signals of the second DP-MZM (28), and a second pilot signal on the respective other of the in-phase and quadrature driving signals of the first and second DP-MZMs (12, 28). Further, the first and second pilot signals are chosen such that the signal detected by said detector (58) is indicative as to whether the slopes of the transfer functions are different for the in-phase and quadrature components of one of the first and second DP-MZMs (12, 28) and identical for the other of the first and second DP-MZMs (12, 28).