公开(公告)号：US20210242936A1

公开(公告)日：2021-08-05

申请号：US17164927

申请日：2021-02-02

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt ,  Mirko Lawin ,  Florian Azendorf

IPC: H04B10/071 ,  H04B10/50

Abstract: The present disclosure relates to an optical time domain reflectometry method including the steps of feeding a plurality of unipolar optical probe signals to a near end of an optical path under test, receiving a corresponding plurality of reflected unipolar optical receive signals, creating a corresponding plurality of digital receive data signals, calculating at least one correlation signal by correlating the digital receive data signals with a bit sequence corresponding to a respective probe bit sequence, and determining the signal propagation delay between the near end of the optical path and a respective reflective position. The present disclosure also relates to an optical time domain reflectometry system in which this method is implemented and a computer program having instructions to cause the optical time domain reflectometer and to execute the method herein.

公开(公告)号：US20190245620A1

公开(公告)日：2019-08-08

申请号：US16267011

申请日：2019-02-04

Applicant: ADVA Optical Networking SE

Inventor： Danish Rafique ,  Michael Eiselt

IPC: H04B10/27 ,  H04B10/07 ,  G06N20/00

CPC classification number: H04B10/27 ,  G06N20/00 ,  H04B10/07 ,  H04J2203/0058

Abstract: A method and apparatus for performing event-driven diagnostics and/or prognostics of a network behaviour of a hierarchical optical network comprising the steps of recording at least one set of historical multi-level events representing different hierarchy levels of said optical network; mining of machine learned event patterns within the recorded multi-level events; mapping the determined mined event patterns to a multi-level network topology of said optical network and/or to a channel connectivity of channels through said optical network; and matching observed real-time multi-level target events of said optical network with at least one of the previously determined mined event patterns and performing a unified cause and effect analysis of network states and/or network components of said optical network for a recognized matching event pattern using the network topology and/or channel connectivity associated with the matching event pattern.

公开(公告)号：US20160301496A1

公开(公告)日：2016-10-13

申请号：US15089840

申请日：2016-04-04

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt

IPC: H04J14/02 ,  H04L5/00 ,  H04B10/27 ,  H04B10/516

CPC classification number: H04J14/0227 ,  H04B10/0775 ,  H04B10/27 ,  H04B10/5161 ,  H04B2210/075 ,  H04J14/0272 ,  H04J14/0276 ,  H04L5/0048

Abstract: The invention relates to a method for creating a control channel in an optical transmission signal, wherein the optical transmission signal (SDS,i, SUS,i) includes an optical carrier frequency component, a higher frequency modulation component carrying user information to be transported from a first end to a second end of an optical transmission link and a lower frequency modulation component carrying control information, the higher frequency modulation component realizing a user channel and the lower frequency modulation component realizing the control channel, and wherein the lower frequency modulation component is created by amplitude modulation. According to the invention, the lower frequency modulation component includes a binary digital pilot tone signal component which corresponds to a pilot tone signal having a predetermined pilot tone frequency (fi).

Abstract translation: 本发明涉及一种用于在光传输信号中创建控制信道的方法，其中光传输信号（SDS，i，SUS，i）包括光载波频率分量，承载要从 光传输链路的第二端和携带控制信息的低频调制分量的第一端，实现用户信道的较高频率调制分量和实现控制信道的低频调制分量，并且其中较低频调制分量为 由幅度调制产生。 根据本发明，较低频率调制分量包括对应于具有预定导频音频率（fi）的导频音信号的二进制数字导频音信号分量。

公开(公告)号：US09369227B2

公开(公告)日：2016-06-14

申请号：US14180295

申请日：2014-02-13

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt ,  Klaus Grobe ,  Jörg-Peter Elbers

IPC: H04J14/02

CPC classification number: H04J14/0216 ,  H04J14/0213 ,  H04J14/0279 ,  H04J14/0283 ,  H04J14/0294 ,  H04J14/0295 ,  H04J14/0297

Abstract: A first and second head-end terminal and at least one optical add/drop filter device are connected to form a transmission path. Each head-end terminal is connected through an optical fiber to a western or eastern WDM port of an adjacent optical add/drop filter device, and each optical add/drop filter device is connected, at an eastern or western WDM port, to a western or eastern WDM port of an adjacent optical add/drop filter device. At least one tail-end terminal is connected to each optical add/drop filter device, wherein a first and second channel port of the respective add/drop tail-end terminal is connected to a dedicated first and second channel port of the optical add/drop filter device through a respective optical fiber. The head-end terminals, the optical add/drop filter devices, and the tail-end terminals are adapted to establish bidirectional communication between each tail-end terminal and the first and second head-end terminal.

Abstract translation: 连接第一和第二头端终端和至少一个光学分插滤波器装置以形成传输路径。 每个头端终端通过光纤连接到相邻光分插滤波器装置的西或东WDM端口，并且每个光分插滤波器装置在东部或西部WDM端口连接到西部 或相邻光分插滤波器装置的东WDM端口。 至少一个尾端终端连接到每个光分插滤波器装置，其中相应分插尾端终端的第一和第二通道端口连接到光添加/分接滤波器装置的专用第一和第二通道端口， 通过相应的光纤进行放大滤波器。 前端终端，光分插滤波器装置和尾端终端适于在每个尾端终端与第一和第二头端终端之间建立双向通信。

公开(公告)号：US09344213B2

公开(公告)日：2016-05-17

申请号：US14190887

申请日：2014-02-26

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt ,  Jörg-Peter Elbers

IPC: H04J14/00 ,  H04J14/02 ,  H04B10/2575 ,  H04B10/077

CPC classification number: H04J14/0227 ,  H04B10/0779 ,  H04B10/2575 ,  H04B2210/074 ,  H04J14/0258 ,  H04J14/0276 ,  H04J14/0279

Abstract: An optical WDM transmission system including a plurality of first optical transceivers at a first end of an optical WDM transmission link, each including a tunable optical transmitter being adapted to create a first digital optical channel signal within the bandwidths of a set of first optical channels of the system according to tuning control information. The first channels are multiplexed in to a first WDM signal and supplied at the first end of the WDM link. Second optical transceivers at a second end link each include a transmitter adapted to create a second digital optical channel signal within a channel bandwidth of a second set of optical channels of the system. The second channels are multiplexed into a second WDM signal for transmission to the first transceivers, and demultiplexing there. A central tuning device creates the tuning control information for the first optical transceivers by tapping off an optical WDM detection signal from the first signal, extracting tuning status information from the optical WDM detection signal and determining tuning control information for at least one of the first transceivers. The central tuning device also supplies the tuning control information to the at least one first transceiver by modulating the second signal according to the tuning control information applying an amplitude modulation of the second signal using a dedicated WDM tone frequency.

Abstract translation: 一种光学WDM传输系统，包括在光学WDM传输链路的第一端处的多个第一光学收发器，每个光学收发器包括可调谐光学发射器，其适于在一组第一光学信道的带宽内创建第一数字光信道信号， 该系统根据调谐控制信息。 第一个信道被复用到第一个WDM信号，并在WDM链路的第一个端口提供。 在第二端链路处的第二光收发器包括适于在系统的第二组光信道的信道带宽内创建第二数字光信道信号的发射机。 第二信道被多路复用到第二WDM信号中以便传输到第一收发机，并在那里解复用。 中央调谐装置通过从第一信号中抽出光WDM检测信号来产生用于第一光收发器的调谐控制信息，从光WDM检测信号中提取调谐状态信息并确定至少一个第一收发器的调谐控制信息 。 中央调谐装置还通过根据调谐控制信息调制第二信号，将调谐控制信息提供给至少一个第一收发器，调谐控制信息使用专用WDM音调频率施加第二信号的幅度调制。

公开(公告)号：US09294192B2

公开(公告)日：2016-03-22

申请号：US14329119

申请日：2014-07-11

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt ,  Klaus Grobe ,  Jörg-Peter Elbers ,  Helmut Griesser

IPC: H04B10/00 ,  H04B10/2575 ,  H04B10/25 ,  H04B10/516 ,  H04J14/02

CPC classification number: H04B10/2575 ,  H04B10/2503 ,  H04B10/5167 ,  H04J14/02 ,  H04J14/025 ,  H04J14/0282 ,  H04J2014/0253

Abstract: A method for bi-directionally transmitting digital optical signals over an optical transmission link in which a first optical transmit signal is created according to a first binary digital signal in such a way that the bit information of the first binary digital signal is included in first sections of the symbol interval of the first optical transmit signal. A second optical transmit signal is created by creating an optical wavelength reuse signal using the first optical transmit signal received at the second end of the optical transmission link, the optical wavelength reuse signal being modulated according to a second digital signal in such a way that the bit information of the second digital signal is included in second sections of the symbol interval of the first optical transmit signal received.

Abstract translation: 一种用于通过光传输链路双向传输数字光信号的方法，其中根据第一二进制数字信号产生第一光发射信号，使得第一二进制数字信号的比特信息包括在第一部分中 的第一光发射信号的符号间隔。 通过使用在光传输链路的第二端接收的第一光发射信号创建光波长重用信号来创建第二光发射信号，光波长重用信号根据第二数字信号被调制，使得 第二数字信号的位信息被包括在接收的第一光发送信号的符号间隔的第二部分中。

公开(公告)号：US11476948B2

公开(公告)日：2022-10-18

申请号：US17005393

申请日：2020-08-28

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt

IPC: H04B10/61 ,  G02B6/293 ,  G02F1/21

Abstract: An optical endless phase shifting device includes a Mach-Zehnder structure operated in push-pull configuration and that creates a differential phase shift. The first stage outputs combined signals which are phase shifted by a phase shift of zero or π in the second stage by phase shifters provided in both arms of the second stage or in a first arm only. These additionally phase-shifted signals are combined to at least one output signal. A control device controls the phase shifters such that endless shifting capability is provided by switching one of the phase shifters or the single phase shifter of the second stage to the respective other value when the differential phase shift reaches a given range of the differential phase shift of [0;π/2] in the configuration with two phase shifters in the second stage or [0;π/2] in the configuration with only one phase shifters in the second stage.

公开(公告)号：US11307104B2

公开(公告)日：2022-04-19

申请号：US16832915

申请日：2020-03-27

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt ,  Florian Azendorf

IPC: G01L1/24 ,  G01D21/02 ,  G01K11/3206

Abstract: The invention relates to a method for optically sensing a parameter of the group of temperature, humidity or mechanical stress using at least one optical sensor which includes a chirped Bragg grating and an optical reference reflector. The method includes the steps of; creating at least one optical probing signal having a predetermined center wavelength and a bandwidth that lies, for the whole range of the parameter to be sensed, within the reflection bandwidth of the chirped Bragg grating; feeding the at least one optical probing signal to the at least one optical sensor; receiving at least one optical reflection signal created by the at least one optical sensor, wherein the at least one optical reflection signal includes, for each of the at least one optical sensor, a first partial reflection signal created by the optical reference reflector and a second partial reflection signal created by the chirped Brag grating of the respective at least one optical sensor; measuring the group delay between the first and second partial reflection signal created by each of the at least one optical sensor; and determining, for each of the at least one optical sensors, an absolute or relative value of the at least one parameter using the group delay measured and a reference information. The invention further relates to a sensor arrangement for implementing the method as well as to an optical sensor that is suitable for being used in such a sensor arrangement.

公开(公告)号：US10958995B2

公开(公告)日：2021-03-23

申请号：US16701588

申请日：2019-12-03

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt

IPC: H04B10/071 ,  H04Q11/00 ,  H04B10/079 ,  H04B10/077

Abstract: Disclosed is a method for determining the link latency of an optical transmission link which includes an end node at each end and one or more pass-through nodes. Each pair of neighboring nodes is connected, at a connection port of each node, by an optical connecting path. Each pass-through node includes an optical pass-through path between its connection ports. The optical connecting paths and optical pass-through paths form an optical link path. A delimiter device includes a delimiter element provided at each connection port of each node. The delimiter element forms a demarcation within the optical link path. According to the method the following steps are carried out: measuring, for each pair of neighboring nodes, a section latency by transmitting a section probe signal from a first one of the pair of nodes to the second one of the pair of nodes; measuring, at the first node, a first time delay of a first reflection signal, which is created by the delimiter element of the delimiter device of the first node by reflecting a power portion of the section probe signal, and a second time delay of a second reflection signal, which is created by the delimiter element of the delimiter device of the second node by reflecting a power portion of the section probe signal received from the first node; and calculating the section latency as half the difference between the second time delay and the first time delay; determining, for each pass-through node either theoretically or by measurement, a pass-through latency of an internal optical pass-through path between the delimiter elements of the delimiter devices of the respective pass-through node; and adding all section latencies and pass-through latencies in order to obtain the link latency of the optical link path.

公开(公告)号：US10355784B2

公开(公告)日：2019-07-16

申请号：US15685141

申请日：2017-08-24

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt ,  Christoph Wagner

IPC: H04B10/516 ,  H04J14/02 ,  H04B10/50 ,  H04B10/556

Abstract: A method for creating an optical binary digital transmit signal to be supplied to an optical transmission link including: operating an optical transmitter in such a state that mode hopping occurs between a predefined first and a predefined second optical mode of the optical transmitter if a binary digital modulation signal is supplied to the optical transmitter and creating a modulated optical output signal of the optical transmitter corresponding to the binary digital modulation signal supplied to the optical transmitter. The modulated optical output signal is optically filtered in such a way that at least a portion of the optical power spectrum of the modulated optical output signal caused by a selected one of the first and second optical modes is suppressed or at least substantially attenuated.