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    • 2. 发明公开
    • Dispersion management in WDM optical networks
    • WDM optischen Kommunikationsnetzwerken的Verwaltung der Dispersion
    • EP1883172A1
    • 2008-01-30
    • EP06291224.1
    • 2006-07-26
    • Alcatel Lucent
    • Antona, Jean-ChristopheLavigne, BrunoBigo, Sébastien
    • H04B10/18
    • H04B10/25253H04B2210/252H04B2210/254H04B2210/256
    • The invention refers to a method and a system for transmitting wavelength-division multiplexed, hereinafter referred to as WDM, optical signals, comprising the steps of:
      (a) transmitting a WDM optical signal by means of a transmitter (1) to a receiver (2), across optical nodes (3, 4) disposed between the transmitter (1) and the receiver (2);
      (b) transmitting the WDM optical signal across a node section (7) disposed between two adjacent optical nodes (3, 4), hereinafter referred to as input node (3) at the beginning of a node section (7) and as output node (4) at the end of the node section (7);
      (c) amplifying the WDM optical signal by means of optical repeaters (8) disposed on the node section (7);
      (d) providing at least one line fiber span (9) disposed between two adjacent optical repeaters (8) each with at least one line fiber (9); and
      (e) providing a post-compensation Dispersion Compensation Module (13), hereinafter referred to as post-DCM, disposed after the last line fiber span (9) of the node section (7) and localized at the output node (4).
      In order to provide node architecture avoiding a chromatic dispersion reset and enhancing performance, it is suggested to set the post-DCM (13) to a value which makes the overall residual dispersion over the node section (7) comprising the cumulated dispersions over the line fiber spans (9), and the post-DCM (13), unequal to zero and in absolute value lower than the product between the number (S) of line fiber spans (9) in the node section (7) and over the cumulated dispersion over the (S-1) first line fiber spans (9) divided by (S-1).
    • 本发明涉及用于发送波分复用的方法和系统,以下称为WDM,光信号,包括以下步骤:(a)通过发射机(1)将WDM光信号发送到接收机( 2),穿过设置在发射机(1)和接收机(2)之间的光节点(3,4)。 (b)在布置在两个相邻光节点(3,4)之间的节点部分(7)(在下文中称为节点部分(7)的开始处的输入节点(3))处以及作为输出节点 (4)在节点部分(7)的末端; (c)通过设置在节点部分(7)上的光中继器(8)放大WDM光信号; (d)提供设置在两个相邻的光中继器(8)之间的至少一个线路纤维跨距(9),每个光中继器具有至少一个线纤维(9); 并且(e)提供设置在节点部分(7)的最后一根光纤跨度(9)之后且定位在输出节点(4)处的后补偿色散补偿模块(13)(以下称为后DCM) 。 为了提供避免色散重置和增强性能的节点架构,建议将后DCM(13)设置为使得节点部分(7)上的总剩余色散包括在线上的累积分散的值 纤维跨度(9)和后DCM(13)不等于零,绝对值低于节点部分(7)中的线纤维跨度(9)的数量(S)之间的乘积和累积的 (S-1)第一线纤维跨度(9)除以(S-1)分散。
    • 3. 发明公开
    • Method of operating and optimising a WDM transmission system and corresponding computer program product
    • 操作和优化WDM传输系统以及相应的计算机程序产品的方法
    • EP1855399A1
    • 2007-11-14
    • EP06290921.3
    • 2006-05-08
    • Alcatel Lucent
    • Antona, Jean-ChristopheLavigne, Bruno
    • H04B10/18
    • H04B10/25133H04B2210/252H04B2210/254
    • A method of operating a WDM transmission system (1) with at least one transmitter (4) and at least one receiver (6) connected by means of a dispersive transmission line (8). The proposed method comprises the steps of successively:
      a) setting a tuneable dispersion pre-compensation value at a transmitter-side Tuneable Dispersion Compensation Module (5) in operative connection with the transmitter to a first predetermined value (PRE°);
      b) setting or adjusting a tuneable dispersion post-compensation value at a receiver-side Tuneable Dispersion Compensation Module (7) in operative connection with the receiver to a second value (POST°) in order to optimise at least one characteristic of a transmitted signal at the receiver; and
      c) simultaneously tuning the transmitter-side Tuneable Dispersion Compensation Module and the receiver-side Tuneable Dispersion Compensation Module with opposite respective dispersion shifts in order to further optimise said characteristic of the transmitted signal.
    • (6)通过色散传输线(8)的方式连接的至少一个发射器(4)和至少一个接收器操作的WDM传输系统(1)的方法。 该提出的方法包括依次的下列步骤:a)设定在发送侧与所述发送器到第一预定值(PRE)操作连接可调谐色散补偿模块(5)°可调谐色散预补偿值; b)中放置,或在接收器侧调节可调色散后补偿值可调谐色散补偿模块(7),其与所述接收器的第二值(POST°),以优化反式mitted信号的至少一个特性可操作地连接 在接收器处; 和c)同时调谐发送侧可调谐色散补偿模块和所述接收器侧可调谐色散补偿模块具有相反respectivement分散位移以进一步优化反mitted信号的所述特性。
    • 4. 发明公开
    • Fast OMSP setup optimized for coherent detection
    • Schnelle,zurKohärenzerkennungoptimierte OMSP-Einstellung
    • EP2493101A1
    • 2012-08-29
    • EP11290102.0
    • 2011-02-24
    • Alcatel Lucent
    • Zami, ThierryLavigne, Bruno
    • H04J14/02H04B10/148H04B10/18H04B10/08
    • H04J14/029H04B10/615H04J14/02H04J14/0227H04J14/0279
    • The present document relates to optical transmission systems. In particular, the present document relates to systems and methods which enable fast setup of Optical Multiplex Section Protection (OMSP) when using coherent optical detection. An optical receiver setup (650) is described. The optical receiver setup comprises first reception means configured to receive a first plurality of distorted wavelength division multiplex (WDM) channel signals (222, 322); second reception means configured to receive a second plurality of distorted WDM channel signals (221, 321); switching means (205, 206, 605) configured to link a first set (224, 329) of the first plurality of distorted WDM channel signals (222, 322) and a complementary second set (223, 326) of the second plurality of distorted WDM channel signals (221, 321) to a plurality of optical receivers; wherein a first residual set (243, 328) of the first plurality of distorted WDM channel signals (222, 322) comprises one or more of the distorted WDM channel signals not linked to the plurality of optical receivers. The setup further comprises the plurality of optical receivers comprising a corresponding plurality of equalizers configured to compensate the distortions incurred by the first set (224, 329) and the second set (223, 326) using a plurality of parameter sets, respectively; a parameter determination unit (610) configured to determine an estimate of a first residual parameter set specific to a first residual distorted WDM channel signal comprised within the first residual set (243, 328); wherein the switching means (205, 206, 605) are configured to link the first residual set (243, 328) to and to remove the second set (223, 326) from the plurality of optical receivers; and wherein an equalizer of the plurality of equalizers is configured to use the estimate of the first residual parameter set for compensating the distortions incurred by the first residual WDM channel signal.
    • 本文件涉及光传输系统。 特别地,本文件涉及当使用相干光学检测时能够快速建立光复用部分保护(OMSP)的系统和方法。 描述了光接收机设置(650)。 光接收器设置包括:第一接收装置,被配置为接收第一多个失真波分复用(WDM)信道信号(222,322); 第二接收装置,被配置为接收第二多个失真的WDM信道信号(221,321); 被配置为将所述第一多个失真的WDM信道信号(222,322)的第一组(224,329)和所述第二组失真的WDM信道信号的第二组失真的互补的第二组(223,326)链接的开关装置(205,206,605) WDM信道信号(221,321)到多个光接收机; 其中所述第一多个失真的WDM信道信号(222,322)的第一残差集(243,328)包括未链接到所述多个光接收机的失真的WDM信道信号中的一个或多个。 该设置还包括多个光接收机,包括相应的多个均衡器,其被配置为分别使用多个参数集来补偿由第一组(224,329)和第二组(223,326)引起的失真; 参数确定单元(610),被配置为确定特定于包含在所述第一残差集(243,328)内的第一残余失真的WDM信道信号的第一残差参数集的估计; 其中所述切换装置(205,206,605)被配置为将所述第一残差组(243,328)链接到所述多个光接收器中并从所述多个光接收器中移除所述第二组(223,326); 并且其中所述多个均衡器中的均衡器被配置为使用所述第一残差参数集合的估计来补偿由所述第一残余WDM信道信号引起的失真。
    • 9. 发明公开
    • Multidirectional add and drop devices for an optical network element
    • 多功能添加和删除功能Netzwerkement
    • EP2448159A1
    • 2012-05-02
    • EP10306172.7
    • 2010-10-26
    • Alcatel Lucent
    • Lavigne, BrunoRouvillain, DelphineZami, Thierry
    • H04J14/02
    • H04J14/0204H04J14/0205H04J14/0212H04J14/0217H04J14/0219
    • An optical drop device comprises first and second wavelength demultiplexers (33, 43) connected to first and second WDM input lines (21), first and second groups of optical receivers (36, 37; 46, 47) respectively connected to the first and second wavelength demultiplexers, and an optical spatial switching matrix (50) comprising demultiplexer-side ports and receiver-side ports,
      a first subset of the demultiplexer-side ports being respectively connected (51) to a second subset (38) of the outputs of the first wavelength demultiplexer,
      a second subset of the demultiplexer-side ports being respectively connected (52) to a second subset (48) of the outputs of the second wavelength demultiplexer,
      a first subset of the receiver-side ports being respectively connected (53) to the optical receivers (36) of the first group,
      a second subset of the receiver-side ports being respectively connected (54) to the optical receivers (46) of the second group. An optical add device is symmetrical. Another embodiment provides recirculation lines between the first and second wavelength demultiplexers.
    • 光滴装置包括连接到第一和第二WDM输入线(21)的第一和第二波长解复用器(33,43),第一和第二组光接收器(36,37; 46,47)分别连接到第一和第二WDM输入线 波长解复用器和包括多路分解器侧端口和接收机侧端口的光学空间交换矩阵(50),多路分解器侧端口的第一子集分别连接到第二子集(38) 第一波长解复用器,多路分解器侧端口的第二子集分别连接(52)到第二波长解复用器的输出的第二子集(48),接收机侧端口的第一子集分别连接(53) 到第一组的光接收器(36),接收器侧端口的第二子集分别连接到第二组的光接收器(46)(54)。 光学添加装置是对称的。 另一实施例提供第一和第二波长解复用器之间的再循环线。