公开(公告)号：US20210204042A1

公开(公告)日：2021-07-01

申请号：US17181903

申请日：2021-02-22

Applicant: Xieon Networks S.à.r.l.

Inventor： Michael Marti ,  Rafael da Costa Miranda ,  Nuno Miguel Pires da Costa Pereira

IPC: H04Q11/00 ,  H04J14/02 ,  H04L1/00

Abstract: An optical network includes an arrangement of optical nodes. An optical node of the arrangement, and corresponding method, perform optical connectivity discovery and negotiation-less optical fiber continuity verification in the optical network. An overall topology of optical connectivity provisioned for the arrangement is discovered by the optical node based on messages received from a management network communicatively coupling the optical nodes to each other. The optical node synchronizes, temporally and sequentially, with the other optical nodes based on the messages received, assigns fiber of the overall topology, based on a verification sequencing method, to verification slots of a verification sequence, and verifies continuity of fiber according to the verification slots of the verification sequence. The discovery, synchronization, and assignment operations enable the optical node and peer node to perform the optical fiber continuity verification in a symmetric, decentralized, and negotiation-less manner.

公开(公告)号：US20210184775A1

公开(公告)日：2021-06-17

申请号：US16647370

申请日：2018-09-14

Applicant: Xieon Networks S.à.r.l.

Inventor： Stefano Calabro ,  Lutz Rapp ,  Bernhard Spinnler

IPC: H04B10/58 ,  H04B10/2507 ,  H04B10/564

Abstract: A method for determining a model representation for an optical transmitter comprises determining a quantity of a subsequence of output signals of an optical transmitter, the output signals being emitted in response to a sequence of input signals provided to the optical transmitter, and determining a model representation for the optical transmitter based on the determined quantity, wherein the quantity only represents a part of the information encoded in the subsequence of the output signals.

公开(公告)号：US20200244388A1

公开(公告)日：2020-07-30

申请号：US16462845

申请日：2017-11-21

Applicant: Xieon Networks S.à.r.l.

Inventor： Danish RAFIQUE ,  Lutz RAPP

IPC: H04J14/02

Abstract: Disclosed herein is a method of transmitting a data stream from a first location to a second location through an optical network, as well as a corresponding performance monitoring unit, a transmitting arrangement and a receiving arrangement. The method comprises the steps of transmitting said data stream from said first location to said second location along a working path, wherein said data stream is transmitted in the form of a super channel comprising a number of n wavelengths within a predefined reserved wavelength range, monitoring the performance of the transmission based on the super channel signal received at said second location, and in case the performance is observed to drop below a predetermined performance threshold, unburdening the super channel from a part of said data stream while maintaining the reserved wavelength range for said super channel, by redirecting said part of the data stream for transmittal along at least one restoration path connecting said first and second locations, and transmitting the remainder of said data stream within the super channel on a number of wavelengths that is less than n, and/or with a reduced transmission rate for at least some of the wavelengths in said super channel.

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：US20160282699A1

公开(公告)日：2016-09-29

申请号：US14777853

申请日：2014-03-03

Applicant: XIEON NETWORKS S.À.R.L.

Inventor： Erich GOTTWALD ,  Harald ROHDE

IPC: G02F1/225 ,  H04L5/00 ,  H04B10/079 ,  H04B10/548

CPC classification number: G02F1/2255 ,  G02F2001/212 ,  H04B10/07955 ,  H04B10/50577 ,  H04B10/548 ,  H04L5/0048

Abstract: An optical IQ modulator (IQM) including two parallel Mach-Zehnder modulators (MZM1, MZM2) generates single sideband data signals. A control unit (18) generates additional optical single sideband pilot signals (PS1, PS2) positioned in a lower and a higher sideband respectively, and also further pilot signals (PS3, PS4) in both sidebands. A IQ modulator output signal (MOS) converted into electrical monitoring signals (MOS) and monitored. A control unit (18) selects control signals (CS12, CS3, CS4) and controls the IQ modulator via its bias ports (6, 7, 8) till the power transfer functions (PTF) of the Mach-Zehnder modulators (MZM1, MZM2) and the phase difference (ΔΦ) between their output signals is optimized.

Abstract translation: 包括两个并联马赫 - 曾德尔调制器（MZM1，MZM2）的光学IQ调制器（IQM）产生单边带数据信号。 控制单元（18）分别产生分别位于较低边带和较高边带内的附加光学单边带导频信号（PS1，PS2），以及两个边带中的另外的导频信号（PS3，PS4）。 将IQ调制器输出信号（MOS）转换为电监控信号（MOS）并进行监控。 控制单元（18）选择控制信号（CS12，CS3，CS4），并通过其偏置端口（6,7,8）控制IQ调制器，直到马赫曾德调制器（MZM1，MZM2）的功率传递函数（PTF） ），并优化其输出信号之间的相位差（ΔΦ）。

公开(公告)号：US20160248664A1

公开(公告)日：2016-08-25

申请号：US15025071

申请日：2013-10-11

Applicant: XIEON NETWORKS S.À.R.L.

Inventor： Kaiyuan HUANG

IPC: H04L12/703 ,  H04L12/717 ,  H04L12/721

CPC classification number: H04L45/28 ,  H04L45/42 ,  H04L45/44 ,  H04L45/62 ,  H04L45/64

Abstract: Disclosed herein is a method of establishing a path for data transport from a source network element (NE) to a destination NE in a communication network comprising a plurality of NEs and links between said NEs. The method comprises the steps of computing, at a central controller, a data path from said source NE to said destination NE along a number of intermediate NEs, sending, from said central controller, central control messages to all or at least a plurality of NEs among said source NE, said intermediate NEs and said destination NE, said central control messages including explicit path information, said explicit path information in at least some of the central control messages comprising more information than needed by the recipient NE for its set-up for data transport along said path, and sending distributed control messages between NEs of said path, said distributed control messages being based on at least one central control message received by one of said NEs. Said distributed control messages allow for distributing switch set-up information that was lost due to failure in the transfer of a central control message.

Abstract translation: 本文公开了一种在包括多个NE和所述NE之间的链路的通信网络中建立从源网元（NE）到目的地NE的数据传输路径的方法。 该方法包括以下步骤：在中央控制器处，沿着多个中间网元计算从所述源NE到所述目的地NE的数据路径，从所述中央控制器向所有或至少多个NE发送中央控制消息 在所述源NE中，所述中间网元和所述目的地网元，所述中央控制消息包括显式路径信息，所述中央控制消息中的至少一些中央控制消息中的所述显式路径信息包含比所述接收方NE为其建立所需的更多信息 沿着所述路径的数据传输，并且在所述路径的网元之间发送分布式控制消息，所述分布式控制消息基于由所述NE中的一个接收的至少一个中央控制消息。 所述分布式控制消息允许分配由于中央控制消息的传送中的故障而丢失的交换机建立信息。

公开(公告)号：US20210194593A1

公开(公告)日：2021-06-24

申请号：US16074287

申请日：2017-02-28

Applicant: XIEON NETWORKS S.À.R.L.

Inventor： Lutz RAPP

IPC: H04B10/54 ,  H04B10/61 ,  H04B10/2537

Abstract: Disclosed herein is a method of encoding and/or decoding data for optical data transmission along a transmission link, as well as corresponding transmitters and receivers. The data is encoded based on an adaptive constellation diagram in a 2-D plane, said constellation diagram including a first and a second pair of symbols, wherein the symbols of the first pair of symbols are located at opposite sides of the origin of the 2-D plane at a first distance di from each other, and wherein the symbols of the second pair of symbols are located at opposite sides of the origin of the 2-D plane at a second distance d2 from each other. The method comprises a step of adapting the constellation diagram by varying the ratio of the first and second distances d1, d2 such as to minimize or nearly minimize a bit error rate in the transmitted data.

公开(公告)号：US10917170B2

公开(公告)日：2021-02-09

申请号：US16091787

申请日：2017-03-23

Applicant: Xieon Networks S.à.r.l.

Inventor： Danish Rafique ,  Stefano Calabró

IPC: H04B10/50 ,  H04B10/516 ,  H04J14/02 ,  H04B10/079 ,  H04L27/34 ,  H04L5/00 ,  H03M13/25 ,  H04L27/36 ,  H04L1/00 ,  H04J14/06

Abstract: Disclosed herein is a method for transmitting digital data in a super channel, in which a set of carriers are packed in a predetermined bandwidth. The set of carriers comprises higher and lower edge carriers having the highest and lowest wavelengths, respectively, among said set of earners, wherein data is transmitted via the higher and lower edge carriers using a corresponding modulation format, each modulation format using a constellation diagram comprising a number of symbols, wherein a binary address is associated with each symbol. Said method comprises the steps of: separating digital data to be transmitted via each of said higher and lower edge carriers into corresponding first and second data streams, and for each of said higher and lower edge carriers, mapping the data of the first data stream to predetermined first bit positions within the binary symbol addresses and the data of the second data stream to predetermined second bit positions within the binary symbol addresses, wherein said first bit positions are bit positions which have an error probability less than the average error probability of all bit positions.

公开(公告)号：US10775318B2

公开(公告)日：2020-09-15

申请号：US16092825

申请日：2017-06-01

Applicant: Xieon Networks S.à.r.l.

Inventor： Lutz Rapp

IPC: G01N21/94 ,  B01D46/00 ,  H05K7/20 ,  G01N21/956

Abstract: A system (10) for detecting a level of dirtiness of a filter mat (20) of an airflow cooling system for telecommunications equipment, the system (10) comprising a detector (12) for detecting fluorescent or reflected light backscattered at at least one part in (22) of the filter mat (20) comprising or treated with a fluorescent or reflective material, wherein the detector (12) comprises a light source (12a) for illuminating said at least one part (22) of the filter mat (20) with sampling light, and a photosensor (12b) for detecting fluorescent or reflected light backscattered at said at least one part (22) of the filter mat (20) caused by the illumination thereof with sampling light, wherein the system (10) is configured for inferring the level of dirtiness of the filter mat (20) from the amount of detected fluorescent or reflected light.

公开(公告)号：US20200049587A1

公开(公告)日：2020-02-13

申请号：US16341731

申请日：2017-11-21

Applicant: Xieon Networks S.à.r.l.

Inventor： Lutz RAPP

IPC: G01M11/00

Abstract: A method of distinguishing whether a detected change in reflected power in an optical time domain reflectometer (OTDR) measurement carried out in a fiber optic transmission system (16) using an OTDR is caused by a an event causing actual attenuation or a change in a mode field diameter, comprising the steps of emitting a succession of first sampling light pulses of a first wavelength into the fiber optic transmission system (16) while a pumping signal with a second wavelength is emitted into the fiber optic transmission system (16), and measuring a first OTDR trace (34′) resulting from the reflection of the first sampling light pulses in the fiber optic transmission system (16), such that the first sampling light pulses and their reflections interact with the pumping signal via stimulated Raman scattering. The method further comprises a step (36) of determining, based at least on information extracted from the first OTDR trace (34′), whether the detected change is mainly due to an event causing actual attenuation or to a change in the mode field diameter in the fiber optic transmission system (16).