中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

205 records (took 0.021 seconds)

    MESHED PROTECTED PASSIVE OPTICAL ACCESS NETWORK STRUCTURE AND OPTICAL NETWORK UNIT STRUCTURE THEREFORE
    71.
    发明申请
    MESHED PROTECTED PASSIVE OPTICAL ACCESS NETWORK STRUCTURE AND OPTICAL NETWORK UNIT STRUCTURE THEREFORE 有权
    受保护的被动光接入网络结构和光网络单元结构

    公开(公告)号：US20130136448A1

    公开(公告)日：2013-05-30

    申请号：US13680698

    申请日：2012-11-19

    Applicant: ADVA OPTICAL NETWORKING SE

    Inventor： Henning Hinderthür

    IPC: H04B10/272 ,  H04J14/08

    CPC classification number: H04B10/272 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0216 ,  H04J14/022 ,  H04J14/028 ,  H04J14/0282 ,  H04J14/0284 ,  H04J14/0294 ,  H04J14/086

    Abstract: Provided is an optical network system and optical network unit (ONU) structure enabling a passive optical access network having a meshed structure with at least two central nodes and plurality of ONUs. One embodiment employs a partially or fully meshed structure of optical fibers between customer locations and multiple optical line terminal (OLT) locations creating a passive optical access network. The ONUs can communicate with a neighboring OLT or ONU using a symmetrical or asymmetrical TDM scheme, and convert between the different TDM schemes. For this purpose, the ONU structure includes two transceiver units, one connected to the western network port and the other to the eastern. The ONU can establish communication between either network port and a further ONU or an OLT, with the ONU controller adapted for passing through data, and converting TDM schemes.

    Abstract translation: 提供了一种光网络系统和光网络单元（ONU）结构，其能够实现具有至少两个中心节点和多个ONU的网状结构的无源光接入网络。 一个实施例在客户位置和多个光线路终端（OLT）位置之间采用部分或全部网格化的光纤结构，从而创建无源光接入网络。 ONU可以使用对称或非对称TDM方案与相邻OLT或ONU通信，并在不同的TDM方案之间进行转换。 为此，ONU结构包括两个收发器单元，一个连接到西部网络端口，另一个连接到东部。 ONU可以在网络端口和另一个ONU或OLT之间建立通信，ONU控制器适合通过数据，并转换TDM方案。

    OPTICAL FREQUENCY LOCKING METHOD AND DEVICE FOR OPTICAL DATA TRANSMISSION
    72.
    发明申请
    OPTICAL FREQUENCY LOCKING METHOD AND DEVICE FOR OPTICAL DATA TRANSMISSION 有权
    光学频率锁定方法和光学数据传输装置

    公开(公告)号：US20130064542A1

    公开(公告)日：2013-03-14

    申请号：US13610575

    申请日：2012-09-11

    Applicant: Michael Eiselt ,  Markus Roppelt

    Inventor： Michael Eiselt ,  Markus Roppelt

    IPC: H04J14/02

    CPC classification number: H04B10/506 ,  H01S5/0617 ,  H01S5/0687 ,  H01S5/4025 ,  H04B10/0797 ,  H04B10/572

    Abstract: An optical frequency locking method tunes each of a plurality of narrow-band optical channel transmit signals (having arbitrary channel frequency spacings) to a dedicated optical channel frequency. The method includes tapping-off a portion of the optical power of the respective channel transmit signal and filtering the tapped-off channel transmit signal using at least one optical filter device. The method also includes monitoring, as an optical input signal, the optical power of the respective channel transmit signal supplied to the at least one optical filter device and, as an optical output signal, the optical power of the filtered channel transmit signal. The method further includes tuning, within a predetermined locking range for the dedicated optical channel frequency, the optical frequency of the respective channel transmit signal such that a predetermined value for the ratio of the output signal and the input signal is reached.

    Abstract translation: 光频锁定方法将多个窄带光信道发射信号（具有任意信道频率间隔）中的每一个调谐到专用光信道频率。 该方法包括：利用至少一个光学滤波器装置对光信号发射信号的光功率的一部分进行分接，并对分接信道发射信号进行滤波。 该方法还包括作为光输入信号监测提供给至少一个滤光器装置的各个通道发射信号的光功率，以及作为光输出信号来监测滤波后的信道发射信号的光功率。 该方法还包括在专用光信道频率的预定锁定范围内调谐相应信道发射信号的光频率，使得达到输出信号和输入信号的比率的预定值。

    Method for reducing the impact of transient effects in an optical network
    73.
    发明授权
    Method for reducing the impact of transient effects in an optical network 有权

    公开(公告)号：US12155415B2

    公开(公告)日：2024-11-26

    申请号：US17970730

    申请日：2022-10-21

    Applicant: ADVA Optical Networking SE

    Inventor： Lutz Rapp

    IPC: H04B10/2507

    Abstract: Provided is a method for reducing the impact of transient effects in an optical network. The optical network includes at least one span, and an optical signal having a plurality of sub-bands travels through at least one span of the at least one span of the optical network. Each of the at least one span has associated amplifiers and the associated amplifiers are connected to launch optical signals into a remainder of a corresponding optical transmission line. Respectively one of the sub-bands of the optical signal traveling through the span is amplified by one of these associated amplifiers. Each of the associated amplifiers includes at least one control element for controlling gain and tilt of the corresponding amplifier. The method includes the steps of for each span, acquiring an actual value of at least one performance parameter; for each span, respectively computing actual settings for each of the control elements included in the amplifiers associated to the corresponding span based on the actual value of the at least one performance parameter of the corresponding span; and for each span, respectively adjusting the settings of each of the control elements included in the amplifiers associated to the corresponding span based on the computed actual settings for the corresponding control element, in order to reduce the impact of transient effects.

    Method for Monitoring a Pump Laser of at Least One Optical Amplifier in an Optical Transmission Link in Operation
    75.
    发明公开
    Method for Monitoring a Pump Laser of at Least One Optical Amplifier in an Optical Transmission Link in Operation 审中-公开

    公开(公告)号：US20230411924A1

    公开(公告)日：2023-12-21

    申请号：US18211638

    申请日：2023-06-20

    Applicant: ADVA Optical Networking SE

    Inventor： Lutz Rapp

    IPC: H01S3/10

    CPC classification number: H01S3/10015 ,  H01S3/1001

    Abstract: Provided is a method for monitoring a pump laser of at least one optical amplifier in an optical transmission link in operation. The optical output power of the pump laser to be monitored depends on an injection current. The pump laser to be monitored is operated at an operating point defined by a given value of the injection current and a corresponding value of the optical output power. The method includes the steps of shifting the operating point of the pump laser to be monitored to at least one shifted operating point. The shifting is effected in such a way that the gain of the respective optical amplifier essentially reaches its steady state, determining information on the at least one shifted operating point, and using the information on the operating point and the at least one shifted operating point to determine information on the stage of aging of the pump laser to be monitored.

    Method of Operating a Bidirectional Optical Transmission Link and Corresponding Optical Transmission Link
    77.
    发明申请
    Method of Operating a Bidirectional Optical Transmission Link and Corresponding Optical Transmission Link 有权

    公开(公告)号：US20230136924A1

    公开(公告)日：2023-05-04

    申请号：US17980005

    申请日：2022-11-03

    Applicant: ADVA Optical Networking SE

    Inventor： Sihuan Zou ,  Ross Saunders ,  Thang Hoang

    IPC: H04B10/524 ,  H04B10/40 ,  H04B10/50

    Abstract: The invention relates to a method and apparatus of operating a bidirectional optical transmission link. The optical transmission link includes a first and a second optical transceiver at a dedicated end of the optical transmission link and an optical path connecting the first and second optical transceiver. The optical transceivers apply the methods of converting an electrical digital transmit signal into an electrical PAM-n transmit signal, pre-emphasizing the electrical PAM-n transmit signal) by digital filtering and using the pre-emphasized electrical PAM-n signal2) as modulating signal for optically modulating an optical carrier signal. The optical modulation method deployed is configured to create an optical PAM-n transmit signal with a positive or negative chirp. For initializing the optical transmission link (100), an initialization process is performed in which at least one loop including the following steps is run through creating, in the first optical transceiver, an optical PAM-n training transmit signal and transmitting it to the second optical transceiver, the optical PAM-n training transmit signal being created using an electrical PAM-n training transmit signal including a binary training sequence. Initial values for filter parameters are used for pre-emphasizing the electrical PAM-n training transmit signal and an initial value is used for a chirp parameter that defines the positive or negative chirp of the optical PAM-n training transmit signal receiving, in the second optical transceiver, the optical PAM-n training transmit signal as an optical PAM-n training receive signal using direct detection. The optical PAM-n training receive signal is converted into an electrical PAM-n training receive signal. The method includes obtaining sampled values of the electrical PAM-n training receive signal (RPel,1) by sampling this signal at predetermined points in time; and using the sampled values obtained and corresponding sampled values of an ideal electrical PAM-n transmit signal to determine operating values for the filter parameters and an operating value for the chirp parameter.

    Rollover of encryption keys in a packet-compatible network
    78.
    发明授权
    Rollover of encryption keys in a packet-compatible network 有权

    公开(公告)号：US11637699B2

    公开(公告)日：2023-04-25

    申请号：US17380149

    申请日：2021-07-20

    Applicant: ADVA Optical Networking SE

    Inventor： Andrew Sergeev ,  Joo Yeon Cho

    IPC: G06F21/00 ,  H04L29/06 ,  H04L9/08

    Abstract: There is provided a technique of establishing encryption keys for communication between 1st peer and 2nd peer via a data path. The technique comprises: by each peer, using input keying material to independently generate equivalent pairs of peer encryption keys (PEKs), verifying equivalence of the generated PEK pairs, and using by 1st peer and 2nd peer the verified PEK pairs to become in possession of equivalent pairs of session encryption keys (SEKs). Verifying comprises: generating by 1st peer a first handshake (HS) message encrypted by PEK Tx1 and sending the first HS message to the 2nd peer via the data path; decrypting by the 2nd peer the first HS message using the PEK Rx2, generating a second HS message encrypted by PEK Tx2, and sending the second HS message to the 1st peer via the data path; and decrypting the second HS message by the 1st peer using PEK Rx1.

    Transparent multiplexing of IP endpoints
    79.
    发明授权
    Transparent multiplexing of IP endpoints 有权

    公开(公告)号：US11621917B2

    公开(公告)日：2023-04-04

    申请号：US17068664

    申请日：2020-10-12

    Applicant: ADVA Optical Networking SE

    Inventor： Robert LeRoy Lynch ,  David Stephen Griswold ,  Troy Anthony Swartz

    IPC: H04L45/745 ,  H04L61/5007

    Abstract: Allowing a network function (such as a router, firewall or SD-WAN endpoint) or service chain of network functions to transparently access a network uplink, while also allowing a set of management entities to access the same link without interference or configuration. To the extent that a conflict arises between ports allocated to the management functions and to the network functions, the relevant port is automatically removed from use by management functions and allocated to network functions to end the conflict.

Patent Agency Ranking