Optical coupler device and an optical monitoring device for monitoring one or more optical point-to-point transmission links

    公开(公告)号:US09917640B2

    公开(公告)日:2018-03-13

    申请号:US14750225

    申请日:2015-06-25

    Inventor: Klaus Grobe

    Abstract: Disclosed is an optical coupler device, especially for monitoring purposes in an optical point-to-point transmission link, which includes a first, a second and a third optical port and is configured to transmit a first optical signal received at the first optical port to the second optical port and to transmit a second optical signal received at the second optical port to the first and third optical port according to a monitoring split ratio with respect to the optical power of the second optical signal, the first and second optical signal having a wavelength lying in a first optical band. The device is further configured to transmit a third and a fourth optical signal received at the third and the second optical port to the respective other optical port, the third and fourth optical signal having a wavelength lying in a second optical band. The device is controllable with respect to the monitoring split ratio and includes a control means adapted to receive a control signal. The control means controls the optical coupler device with respect to the monitoring split ratio such that in a first work the second optical signal is transmitted to the first optical port, only, and in a second work mode a major portion of the optical power of the second signal is transmitted to the first optical port and a minor portion of the optical power of the second signal is transmitted to the third optical port.

    Device and a method for extracting timing information from a radio signal

    公开(公告)号:US20180024249A1

    公开(公告)日:2018-01-25

    申请号:US15657688

    申请日:2017-07-24

    Inventor: Kenneth HANN

    Abstract: A device for producing timing information comprises equipment (101) that extracts first preliminary timing information from a first circular polarized component of a radio signal and second preliminary timing information from a second circular polarized component of the radio signal. The second circular polarized component has an opposite handedness and a time-delay with respect to the first circular polarized component. The device comprises a processing system (102) that produces the timing information based on the first preliminary timing information and/or the second preliminary timing information, and uses stored correction data for reducing the effect of the time-delay on the timing information when using the second preliminary timing information for producing the timing information. Thus, the timing information corresponds to the first preliminary timing information also when the timing information is produced based on the second preliminary timing information.

    Method and apparatus for providing a differential latency

    公开(公告)号:US09838112B2

    公开(公告)日:2017-12-05

    申请号:US14928269

    申请日:2015-10-30

    Inventor: Klaus Grobe

    Abstract: An apparatus and method for providing a differential latency, DL, between an upstream, US, transmission and a downstream, DS, transmission via an optical transmission link (OTL), said apparatus comprising a measurement unit (2) configured to measure the round trip delays, RTD, of at least two measurement signals having different measurement wavelengths; and a processing unit (3) configured to derive an upstream, US, delay of at least one optical signal at an upstream wavelength from the at least two measured round trip delays, RTD, and to derive a downstream, DS, delay of at least one optical signal at a downstream wavelength from the at least two measured round trip delays, RTD, wherein the differential latency, DL, is calculated on the basis of the derived delays, RTD.

    Method and a system for providing a flexible secondary data path
    108.
    发明授权
    Method and a system for providing a flexible secondary data path 有权
    用于提供灵活的辅助数据路径的方法和系统

    公开(公告)号:US09577873B2

    公开(公告)日:2017-02-21

    申请号:US13726077

    申请日:2012-12-22

    Inventor: Kurt Kayser

    Abstract: A method and an apparatus for providing a flexible secondary data path control, said method comprising the steps of: detecting (S1) a primary data path failure of a primary data path between a customer premise site (3) and a central office site (4); initiating (S2) a corresponding secondary data path if a primary data path failure of said primary data path has been detected; initiating (S3) a measurement of data path characteristics of said initiated secondary path or utilizing constantly monitored data path characteristics of paths for an available secondary data path; and determining (S4) services to be provided via said secondary data path depending on the measured data path characteristics of said secondary data path.

    Abstract translation: 一种用于提供灵活的辅助数据路径控制的方法和装置,所述方法包括以下步骤:检测(S1)客户驻地(3)和中心局(4)之间的主数据路径的主数据路径故障 ); 如果已经检测到所述主数据路径的主数据路径故障,则启动(S2)相应的次数据路径; 启动(S3)所述发起的辅助路径的数据路径特性的测量或者利用用于可用次要数据路径的路径的不断监视的数据路径特性; 以及根据所述辅助数据路径的测量数据路径特性来确定要经由所述辅助数据路径提供的服务(S4)。

    Method and Device for Creating a Control Channel in an Optical Transmission Signal and Method and Device for Extracting the Information Included Therein
    109.
    发明申请
    Method and Device for Creating a Control Channel in an Optical Transmission Signal and Method and Device for Extracting the Information Included Therein 有权
    用于在光传输信号中创建控制信道的方法和设备,以及用于提取其中包含的信息的方法和设备

    公开(公告)号:US20160301496A1

    公开(公告)日:2016-10-13

    申请号:US15089840

    申请日:2016-04-04

    Inventor: Michael Eiselt

    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。

    Protected optical single-fiber WDM system
    110.
    发明授权
    Protected optical single-fiber WDM system 有权
    保护光纤单纤WDM系统

    公开(公告)号:US09369227B2

    公开(公告)日:2016-06-14

    申请号:US14180295

    申请日:2014-02-13

    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。

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