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    Method and apparatus for equalizing link performance
    2.
    发明授权
    Method and apparatus for equalizing link performance 有权
    用于均衡链路性能的方法和装置

    公开(公告)号：US09172475B2

    公开(公告)日：2015-10-27

    申请号：US14318356

    申请日：2014-06-27

    申请人： Huawei Technologies Co., Ltd.

    发明人： Sen Zhang ,  Zhiyong Feng ,  Jianrui Han

    IPC分类号： H04B10/08 ,  H04B10/564 ,  H04J14/02 ,  H04B10/293 ,  H04B10/079 ,  H04B10/294

    CPC分类号： H04B10/564 ,  H04B10/07953 ,  H04B10/07955 ,  H04B10/2931 ,  H04B10/2935 ,  H04B10/294 ,  H04J14/0221 ,  H04J14/0261 ,  H04Q2213/1301 ,  H04Q2213/1308

    摘要： Embodiments of the present invention provide a method and an apparatus for equalizing link performance, and relate to the field of optical wavelength division multiplexing. In the present invention, target input power spectra and target output power spectra in all OMS sections in a network and single wave attenuation at a power adjusting point may be concurrently calculated based on link information of the OMS sections, fast adjustment may also be implemented for a complex network topology, and the adjustment may be implemented in a one-off manner to avoid a problem that iteration adjustment is caused by mutual impact of power adjusting points during serial adjustment in a ring network. In addition, it is not required to connect an optical path in the calculation phase, thereby eliminating reliance on a connected optical path in a process for equalizing link performance.

    摘要翻译： 本发明的实施例提供了一种用于均衡链路性能的方法和装置，涉及光波分复用领域。 在本发明中，可以基于OMS部分的链接信息同时计算网络中所有OMS部分中的目标输入功率谱和目标输出功率谱以及功率调整点的单波衰减，也可以对 复杂的网络拓扑，并且可以以一次性方式实现调整，以避免在环形网络中的串行调整期间由功率调整点的相互影响引起迭代调整的问题。 此外，在计算阶段不需要连接光路，从而消除了在连接性能均衡的过程中对所连接的光路的依赖。

    Dynamic evaluation of the optical multiplex section per-channel pre-emphasis power
    3.
    发明授权
    Dynamic evaluation of the optical multiplex section per-channel pre-emphasis power 有权
    光学复用段动态评估每通道预加重功率

    公开(公告)号：US09002200B2

    公开(公告)日：2015-04-07

    申请号：US13885562

    申请日：2011-11-18

    申请人： Jean-Luc Auge

    发明人： Jean-Luc Auge

    IPC分类号： H04B10/08 ,  H04B10/079 ,  H04B10/293 ,  H04B10/294 ,  H04B10/564 ,  H04J14/02

    CPC分类号： H04B10/07955 ,  H04B10/2935 ,  H04B10/294 ,  H04B10/564 ,  H04J14/0221

    摘要： An apparatus and method of pre-emphasising a launch power profile of a section in an optical network is provided. The method comprises measuring the output power at the output of the section, determining the predicted output power associated with a flat launch power profile using design characteristics of the section and determining the total power deviation between the measured output power and the predicted output power. Also, the method comprises determining the signal to noise ratio deviation and the nonlinear phase shift deviation as a function of the total power deviation, and pre-emphasising the launch power profile based on a function of the calculated signal to noise ratio deviations of each span and the calculated nonlinear phase shift deviations of each span, such that the sum of the nonlinear phase shift deviations and the sum of the signal to noise ratio deviations of each channel are reduced by an equal amount.

    摘要翻译： 提供了一种预先强调光网络中的部分的发射功率分布的装置和方法。 该方法包括测量该部分输出处的输出功率，使用该部分的设计特征确定与平坦发射功率分布相关联的预测输出功率，并确定所测量的输出功率与预测输出功率之间的总功率偏差。 此外，该方法包括根据总功率偏差来确定信噪比偏差和非线性相移偏差，并且基于计算的每个跨度的信噪比偏差的函数预先强调发射功率分布 以及每个跨度的计算的非线性相移偏差，使得非线性相移偏差的和与每个通道的信噪比偏差之和减小相等的量。

    WDM optical transmission system and control method thereof
    5.
    发明授权
    WDM optical transmission system and control method thereof 有权
    WDM光传输系统及其控制方法

    公开(公告)号：US08615167B2

    公开(公告)日：2013-12-24

    申请号：US13230048

    申请日：2011-09-12

    申请人： Yasushi Sugaya ,  Takehiro Fujita ,  Satoru Okano

    发明人： Yasushi Sugaya ,  Takehiro Fujita ,  Satoru Okano

    IPC分类号： H04B10/08 ,  H04J14/02

    CPC分类号： H04B10/2935 ,  H04B10/294 ,  H04J14/0221

    摘要： A WDM optical transmission system includes a plurality of optical nodes optically coupled by a transmission line, a processor that is operative to calculate an amount of adjustment of a reception level capable of increasing an optical signal-to-noise ratio for each channel of the WDM light reaching the optical node positioned at a receiving end of the unit section based on information on amplification operation of the WDM light in at least one optical-amplification repeating node disposed on the optical transmission line in the unit section, and to adjust a power level corresponding to each channel of the WDM light transmitted on the transmission line from the optical node positioned at a transmission end of the unit section in accordance with a calculation result of the calculation.

    摘要翻译： WDM光传输系统包括通过传输线光耦合的多个光学节点，处理器，其可操作以计算能够增加WDM的每个信道的光信噪比的接收电平的调整量 基于设置在单元部分中的光传输线路上的至少一个光放大重复节点中的WDM光的放大操作的信息的信息，到位于单元部分的接收端的光节点的光，并且调整功率电平 对应于根据计算的计算结果，从位于单元部分的发送端的光节点在传输线上传输的WDM光的每个信道。

    Optical amplifier
    7.
    发明授权
    Optical amplifier 有权
    光放大器

    公开(公告)号：US08064130B2

    公开(公告)日：2011-11-22

    申请号：US10351340

    申请日：2003-01-27

    申请人： Masato Nishihara ,  Yasushi Sugaya ,  Etsuko Hayashi

    发明人： Masato Nishihara ,  Yasushi Sugaya ,  Etsuko Hayashi

    IPC分类号： H04B10/17 ,  H04B10/12

    CPC分类号： H04B10/2935 ,  H01S3/06758 ,  H01S3/06775 ,  H01S3/094011 ,  H01S3/10007 ,  H01S3/10023 ,  H01S3/1608 ,  H01S2301/02 ,  H01S2301/04

    摘要： It is an object of the present invention to provide an optical amplifier using optical amplification mediums each doped with a rare earth element for increasing amplification efficiency of signal light in S-band and the like. To this end, the optical amplifier is constituted such that, when performing optical amplification for S-band and the like in which a center wavelength of a gain peak in the optical amplification medium is located at an outside of a signal band, a gain coefficient of when a pumping condition of the optical amplification medium is maximum is set so that a parameter η obtained by dividing a minimum value of the gain coefficient in the signal band by a maximum value of the gain coefficient outside of the signal band becomes a previously set value or more, wherein, for example, the parameter η can be increased by controlling a temperature of each of a plurality of EDFs between which gain equalizers are disposed.

    摘要翻译： 本发明的目的是提供一种使用各自掺杂有稀土元素的光放大介质的光放大器，用于提高S波段等信号光的放大效率。 为此，光放大器被构成为：当对光放大介质中的增益峰值的中心波长位于信号频带外侧的S波段等进行光放大时，增益系数 当光放大介质的泵送条件最大时，设定参数＆egr; 通过将信号频带中的增益系数的最小值除以信号频带之外的增益系数的最大值而获得的值成为预先设定的值以上，其中，例如参数＆egr; 可以通过控制在其间设置增益均衡器的多个EDF中的每一个的温度来增加。

    Optical pulse amplication apparatus and method
    8.
    发明授权
    Optical pulse amplication apparatus and method 失效
    光脉冲放大装置及方法

    公开(公告)号：US08036537B2

    公开(公告)日：2011-10-11

    申请号：US11762337

    申请日：2007-06-13

    申请人： Yuanmin Cai

    发明人： Yuanmin Cai

    IPC分类号： H01S3/13 ,  G02B6/34 ,  G02B5/18

    CPC分类号： H04B10/2935

    摘要： A method and apparatus for producing a series of amplified optical pulses from a series of input optical pulses including creating a set of local optical pulses from a series of input optical pulses, the set of local optical pulses having different amplitudes arranged in a graded order. The set of local optical pulses are amplified by an optical amplifier to form a significantly amplified first local optical pulse that is removed from the set of local optical pulses and output. The method successively removes the significantly amplified first local optical pulse, re-creates the set of local optical pulses by adding a new optical pulse to the end of the set of local optical pulses; and routes the recreated set of local optical pulses back to the input of the optical amplifier to continue producing the series of amplified optical pulses.

    摘要翻译： 一种用于从一系列输入光脉冲产生一系列放大的光脉冲的方法和装置，包括从一系列输入光脉冲产生一组局部光脉冲，该组局部光脉冲具有以梯度排列的不同幅度。 该组本地光脉冲由光放大器放大，以形成从该组局部光脉冲中移出并输出的显着放大的第一局部光脉冲。 该方法连续地去除显着放大的第一局部光脉冲，通过在该组局部光脉冲的末端添加新的光脉冲来重新产生一组局部光脉冲; 并将重新组合的本地光脉冲路由回到光放大器的输入端，以继续产生一系列放大的光脉冲。

    Optical amplifier and abnormality detection method for the same
    9.
    发明授权
    Optical amplifier and abnormality detection method for the same 有权
    光放大器与异常检测方法相同

    公开(公告)号：US07880960B2

    公开(公告)日：2011-02-01

    申请号：US12489956

    申请日：2009-06-23

    申请人： Kosuke Komaki ,  Yuji Tamura

    发明人： Kosuke Komaki ,  Yuji Tamura

    IPC分类号： H01S3/00

    CPC分类号： H04B10/2935 ,  H01S3/2316 ,  H04B10/0797

    摘要： An optical amplifier includes a first optical amplification unit that amplifies input light, a variable optical attenuation unit that attenuates an output of the first optical amplification unit, a second optical amplification unit that amplifies an output of the variable optical attenuation unit, and a loss amount control unit that controls the variable optical attenuation unit, wherein an external attenuating optical medium is inserted between the variable optical attenuation unit and the second optical amplification unit. The optical amplifier includes an abnormality detecting unit that detects abnormality in optical loss based on a light level between the external attenuating optical medium and the second optical amplification unit, and a detection invalidating unit that invalidates any abnormality detected by the abnormality detecting unit when a light level between the variable optical attenuation unit and the external attenuating optical medium is lower than a threshold level.

    摘要翻译： 光放大器包括放大输入光的第一光放大单元，衰减第一光放大单元的输出的可变光衰减单元，放大可变光衰减单元的输出的第二光放大单元， 控制单元，其控制可变光衰减单元，其中在可变光衰减单元和第二光放大单元之间插入外部衰减光介质。 光放大器包括：异常检测单元，其基于外部衰减光学介质和第二光学放大单元之间的光级检测光损耗的异常;以及检测无效单元，其使得当灯处于异常检测单元时检测到的异常 可变光衰减单元和外部衰减光介质之间的电平低于阈值电平。