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    OPTICAL TRANSMITTER AND WAVEFORM DISTORTION CORRECTION METHOD
    3.
    发明公开
    OPTICAL TRANSMITTER AND WAVEFORM DISTORTION CORRECTION METHOD 有权
    OPTISCHER SENDER UND WELLENFORMVERZERRUNGSKORREKTURVERFAHREN

    公开(公告)号：EP3002894A1

    公开(公告)日：2016-04-06

    申请号：EP15186431.1

    申请日：2015-09-23

    申请人： FUJITSU LIMITED

    发明人： Nakashima, Hisao ,  Tanimura, Takahito ,  Akiyama, Yuichi

    IPC分类号： H04B10/588 ,  H04B10/50

    CPC分类号： H04B10/2507 ,  H04B10/50572 ,  H04B10/50575 ,  H04B10/541 ,  H04B10/588 ,  H04B2210/072

    摘要： An optical transmitter includes: a mapper configured to generate an electric-field-information signal from transmission data; a training-signal-generation section configured to generate a training signal; a training-signal-insertion section configured to insert the training signal into the electric-field-information signal; a driver configured to generate a drive signal from the electric-field-information signal into which the training signal is inserted; a modulator configured to generate an optical-modulation signal based on the drive signal; an optical receiver configured to generate an intensity signal indicating intensity of the optical-modulation signal; a training-signal-extraction section configured to extract an intensity-training signal corresponding to the training signal, from the intensity signal; a coder configured to generate a coded-training signal by coding the intensity-training signal extracted by the training-signal-extraction section using the training signal generated by the training-signal-generation section; and a distortion detection section configured to detect waveform distortion of the optical-modulation signal, based on the coded-training signal.

    摘要翻译： 光发射机包括：映射器，被配置为从传输数据生成电场信息信号; 训练信号生成部，被配置为生成训练信号; 训练信号插入部，被配置为将训练信号插入到电场信息信号中; 驱动器，被配置为从所述训练信号插入的电场信息信号生成驱动信号; 调制器，被配置为基于所述驱动信号产生光调制信号; 光接收器，被配置为产生指示所述光调制信号的强度的强度信号; 训练信号提取部，被配置为从所述强度信号中提取与所述训练信号对应的强度训练信号; 编码器，被配置为通过使用由训练信号生成部生成的训练信号对由训练信号提取部提取的强度训练信号进行编码来生成编码训练信号; 以及失真检测部，被配置为基于编码训练信号检测光调制信号的波形失真。

    OPTICAL POWER MEASUREMENT METHOD, OPTICAL LINE TERMINAL AND OPTICAL NETWORK UNIT
    5.
    发明公开
    OPTICAL POWER MEASUREMENT METHOD, OPTICAL LINE TERMINAL AND OPTICAL NETWORK UNIT 有权
    OPTISCHER LEITUNGSANSCHLUSS在OPTISCHE NETZWERKEINHEIT展会上亮相LEITUNGSMESSUNGSVERFAHREN

    公开(公告)号：EP2413518A1

    公开(公告)日：2012-02-01

    申请号：EP10758056.5

    申请日：2010-03-31

    申请人： Huawei Technologies Co., Ltd.

    发明人： DING, Ping ,  DONG, Yinghua ,  LIANG, Xuanqin ,  WU, Guangdong

    IPC分类号： H04B10/08 ,  H04Q11/00

    CPC分类号： H04B10/0773 ,  H04B10/0775 ,  H04B10/0779 ,  H04B2210/072 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0081 ,  H04Q2011/0083

    摘要： The embodiments of the present invention relate to communications technology, and disclose an optical power measurement method, an Optical Line Terminal (OLT), and an Optical Network Unit (ONU). The method includes: generating a Physical Layer Operation Administration Maintenance (PLOAM) message that includes an identifier of an ONU to be measured and information about a time bucket that is allocated to the ONU to be measured and is used for sending upstream optical signals; sending the PLOAM message to the multiple ONUs; receiving the upstream optical signals that are sent, in the allocated time bucket, by the ONU to be measured; and detecting the received upstream optical signals, and determining the optical power of the upstream optical signals. The present invention avoid waste of bandwidth caused in the prior art when the DBA is required to allocate bandwidth to the ONU to be measured for the purpose of detecting the optical power.

    摘要翻译： 本发明的实施例涉及通信技术，并公开了光功率测量方法，光线路终端（OLT）和光网络单元（ONU）。 该方法包括：生成包含要测量的ONU的标识符的物理层操作管理维护（PLOAM）消息和分配给要测量的ONU的时间段的信息，并用于发送上行光信号; 将PLOAM消息发送到多个ONU; 在所分配的时间段中接收被测量的ONU发送的上行光信号; 并检测所接收的上游光信号，以及确定上行光信号的光功率。 本发明避免了为了检测光功率而要求DBA向要测量的ONU分配带宽时，在现有技术中造成带宽的浪费。

    Wavelength-division multiplex communication apparatus
    6.
    发明公开
    Wavelength-division multiplex communication apparatus 有权
    波分复用通信装置

    公开(公告)号：EP1873950A2

    公开(公告)日：2008-01-02

    申请号：EP07118054.1

    申请日：2002-11-22

    申请人： Fujitsu Ltd.

    发明人： Takanashi,, Takako ,  Izumi, Futoshi

    IPC分类号： H04J14/02

    CPC分类号： H04J14/0241 ,  H04B10/0775 ,  H04B2210/072 ,  H04B2210/074 ,  H04B2210/075 ,  H04B2210/08 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0278

    摘要： In the WDM communication system, in the absence of data to be transmitted on an optical channel, a pilot signal transmitting means (11A-4, 11B) transmits the channel-unique pilot signal data on the channel. A WDM communication apparatus on a receiving end detects the pilot signal data in the received WDM signals, and on the basis of the detection result, it evaluates whether each channel is used or not. It is thus easy to recognize which channel is unused (idle) of the WDM signals, so that channel resources can be used effectively according to the traffic.

    摘要翻译： 在WDM通信系统中，在没有要在光信道上发送的数据的情况下，导频信号发送装置（11A-4,11B）在信道上发送信道独有的导频信号数据。 接收端的WDM通信设备检测接收到的WDM信号中的导频信号数据，并根据检测结果评估每个信道是否被使用。 因此很容易识别WDM信号中哪个信道未被使用（空闲），从而可以根据业务有效地使用信道资源。

    SONET J0 byte message monitoring system
    7.
    发明公开
    SONET J0 byte message monitoring system 审中-公开
    Überwachungssystemeiner SONET J0 Byte Nachricht

    公开(公告)号：EP1641159A1

    公开(公告)日：2006-03-29

    申请号：EP05025024.0

    申请日：1999-05-04

    申请人： Ciena Corporation

    发明人： Shanton, John L. III

    IPC分类号： H04J3/14

    CPC分类号： H04J3/14 ,  H04B10/0771 ,  H04B10/0775 ,  H04B2210/071 ,  H04B2210/072 ,  H04J3/085 ,  H04J14/02 ,  H04J2203/006 ,  H04J2203/0089

    摘要： A WDM system (100) carrying a plurality of optical signals, each at a respective wavelength, is provided whereby each optical signal includes a plurality of frames, each frame conforming to a synchronous optical network (SONET) standard. A plurality of optical transmitter modules output a corresponding one of the plurality of optical signals, and each of a plurality of optical selectors (114) at a receiving end of the WDM system (100) selects a respective one of the plurality of optical signals. In addition, a plurality of receiver modules (116) are provided respectively connected to each of the optical selectors (114). Both the transmitter and receiver modules include byte extraction circuitry that extracts one byte, e.g., the JO byte, from each of the plurality of frames. Successive bytes are grouped as messages, which are stored in registers so that comparisons can be made between consecutive messages and a predetermined message.

    摘要翻译： 提供携带多个光信号的WDM系统（100），每个光信号各自具有相应的波长，由此每个光信号包括多个帧，每个帧符合同步光网络（SONET）标准。 多个光发射机模块输出多个光信号中的相应一个，并且在WDM系统（100）的接收端的多个光选择器（114）中的每一个选择多个光信号中的相应一个。 另外，分别连接到每个光学选择器（114）的多个接收器模块（116）。 发送器和接收器模块都包括从多个帧中的每一个提取一个字节（例如JO字节）的字节提取电路。 连续字节被分组为消息，其被存储在寄存器中，使得可以在连续消息和预定消息之间进行比较。

    OPTICAL PERFORMANCE MONITORING FOR D/WDM NETWORKS
    8.
    发明公开
    OPTICAL PERFORMANCE MONITORING FOR D/WDM NETWORKS 审中-公开
    监控光学功率属性D / WDM网络的

    公开(公告)号：EP1340324A2

    公开(公告)日：2003-09-03

    申请号：EP01270027.4

    申请日：2001-12-07

    申请人： Nortel Networks Limited

    发明人： SIMARD, Frederic ,  PARK, David, W.

    IPC分类号： H04B10/08

    CPC分类号： H04B10/07955 ,  H04B10/0775 ,  H04B10/2537 ,  H04B2210/072 ,  H04B2210/078

    摘要： A performance monitoring method for an optically amplified transmission system. The method provides the optical power at each amplifier site, taking into account the inaccuracies introduced by the stimulated Raman scattering in the power estimation obtained with the current methods. An optical spectrum analyzer is used at the output of the transmission link of interest to accurately measure the output power of each wavelength. This value is sent upstream to the last amplifier in the link, to compute an error term as the difference between the actual measurement and the estimation. The error term is used to infer the SRS-induced error by system elements not accounted for in the model. The error term is then fed-back to each amplifier in the link, so that the estimated power is adjusted to account for the SRS-induced inaccuracy.

    A METHOD AND AN AMPLIFIER UNIT FOR THE TRANSMISSION OF DATA SIGNALS VIA AN OPTICAL FIBRE
    10.
    发明公开
    A METHOD AND AN AMPLIFIER UNIT FOR THE TRANSMISSION OF DATA SIGNALS VIA AN OPTICAL FIBRE 失效
    方法和设备进行数据传输通过一根光纤

    公开(公告)号：EP1004175A1

    公开(公告)日：2000-05-31

    申请号：EP97924935.6

    申请日：1997-05-30

    申请人： TELLABS DENMARK A/S

    发明人： H RLYCK, Henrik

    IPC分类号： H04B10/17

    CPC分类号： H04B10/291 ,  H04B10/0775 ,  H04B10/0777 ,  H04B10/2912 ,  H04B2210/072 ,  H04B2210/078 ,  H04B2210/258

    摘要： A method of transmitting data signals via an optical fiber between two network elements (14, 36; 43, 56) in a digital data transmission network comprises using a transmission protocol, wherein, in addition to said data signals, first control and/or monitor signals in the form of overhead signals are transmitted. An optical fiber amplifier (23) is inserted in the optical fiber between the is two network elements. Additionally, second control and/or monitor signals in a format corresponding to said overhead signals are transferred between the optical fiber amplifier and at least one of the two network elements.An amplifier unit (22; 48) comprising an optical fiber amplifier (23) is adapted to be inserted in an optical fiber for the transmission of data signals between two network elements (14, 36; 43, 56) in such a data transmission network. The unit moreover comprises means to transfer second control and/or monitor signals in a format corresponding to said overhead signals between the unit and at least one of the two network elements.