公开(公告)号：US10484122B2

公开(公告)日：2019-11-19

申请号：US16251463

申请日：2019-01-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jing Wang ,  Ning Liu

IPC: H04J14/02 ,  H04B10/2519 ,  H04B10/40

Abstract: Embodiments of the present invention provide an optical add/drop multiplexer, including a plurality of tunable optical add/drop multiplexers T-OADMs. Each T-OADM includes a second wavelength control unit and two grating-assisted filters GAFs. The second wavelength control unit is connected to a second GAF. A drop port of a first GAF is connected to an input port of the second GAF. An add port of the first GAF is connected to an output port of the second GAF. An input port of the first GAF receives light waves of a plurality of wavelengths. The first GAF transmits a first light wave to the input port of the second GAF through the drop port of the first GAF. The second wavelength control unit changes a dropped spectrum of the second GAF based on first amplitude of wavelength shift, to obtain a first light wave response.

公开(公告)号：US09660723B2

公开(公告)日：2017-05-23

申请号：US15080922

申请日：2016-03-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ning Liu ,  Han Zhao

IPC: H04B10/079 ,  H04B10/548 ,  H04J14/02 ,  H04Q11/00

CPC classification number: H04B10/07957 ,  H04B10/548 ,  H04J14/02 ,  H04Q11/0005 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0026 ,  H04Q2011/0028

Abstract: The present invention discloses a wavelength selective switch and a method for controlling a spatial phase modulator in a wavelength selective switch. The wavelength selective switch includes: a first demultiplexing/multiplexing component, configured to split, an input multi-wavelength optical signal into multiple single-wavelength optical signals; a spatial phase modulator, configured to change a transmission direction of each single-wavelength optical signal included in the multiple single-wavelength optical signals, where the spatial phase modulator is further configured to split a first single-wavelength optical signal in the multiple single-wavelength optical signals into a first light beam and a second light beam, where the first light beam is incident on an output port, and the second light beam is incident on a monitoring port; a photoelectric detector, configured to receive the second light beam; and a performance monitoring component, configured to perform performance monitoring on the received second light beam.

公开(公告)号：US09088442B2

公开(公告)日：2015-07-21

申请号：US14319350

申请日：2014-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Teng Ma ,  Zihuan Chen ,  Ning Liu

IPC: H04L27/00 ,  H04L1/00

CPC classification number: H04L27/0008 ,  H04L1/0003 ,  H04L1/0082 ,  H04L27/0012

Abstract: Embodiments of the present invention disclose a method, an apparatus, and a system for sending and receiving service data, where the method includes: first, obtaining, by a sending end, a target modulation mode different from a current modulation mode; and then, generating, by the sending end, invalid data, and temporarily storing service data at the same time; and then, performing encapsulation and mapping on the invalid data, switching the current modulation mode to the target modulation mode, modulating encapsulated and mapped invalid data according to the target modulation mode, and sending modulated invalid data to a receiving end; and finally, after the sending end completes the encapsulation and mapping on the invalid data, performing encapsulation and mapping on the temporarily stored service data, modulating encapsulated and mapped service data according to the target modulation mode, and sending modulated service data to the receiving end.

Abstract translation: 本发明的实施例公开了一种用于发送和接收服务数据的方法，装置和系统，其中该方法包括：首先，通过发送端获得与当前调制模式不同的目标调制模式; 然后由发送端生成无效数据，同时暂时存储业务数据; 然后对无效数据执行封装和映射，将当前调制模式切换到目标调制模式，根据目标调制模式调制封装和映射的无效数据，并将调制的无效数据发送到接收端; 最后，在发送端完成对无效数据的封装和映射后，对临时存储的业务数据进行封装和映射，根据目标调制模式调制封装和映射的业务数据，并将调制业务数据发送给接收端 。

公开(公告)号：US09515766B2

公开(公告)日：2016-12-06

申请号：US14882107

申请日：2015-10-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Han Zhao ,  Liangjia Zong ,  Ning Liu

IPC: H04B10/032 ,  H04Q11/00 ,  H04J14/02

CPC classification number: H04J14/0297 ,  H04B10/032 ,  H04J14/0212 ,  H04J14/0221 ,  H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0081

Abstract: The present invention provides a node apparatus, where two N×N wavelength selective switches are used to form a parallel-connected structure, and two ends of each power splitter are separately connected to input ends of the N×N wavelength selective switches, and two ends of each power combiner are separately connected to output ends of the N×N wavelength selective switches, thereby transferring route switching selection work originally performed between multiple 1×M wavelength selective switches to the inside of the N×N wavelength selective switch for implementation. Compared with an original structure using discrete components, the node apparatus is simplified, and when a traffic volume expands, the number of module slots on a line side does not need to be increased, thereby reducing usage costs eventually. The present invention is used for signal transmission in a node.

Abstract translation: 本发明提供了一种节点装置，其中使用两个N×N个波长选择开关来形成并联结构，并且每个功率分配器的两端分别连接到N×N个波长选择开关的输入端，并且两个 每个功率合成器的端部分别连接到N×N个波长选择开关的输出端，从而将最初在多个1×M波长选择开关之间执行的路由切换选择工作传送到N×N波长选择开关的内部，以实现。 与使用离散组件的原始结构相比，节点设备简化，当流量扩大时，线路侧的模块插槽数量不需要增加，从而最终降低使用成本。 本发明用于节点中的信号传输。

公开(公告)号：US09014556B2

公开(公告)日：2015-04-21

申请号：US14051647

申请日：2013-10-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ning Liu

IPC: H04B10/08 ,  H04B10/079 ,  H04B17/00

CPC classification number: H04B10/07955

Abstract: The present invention discloses an optical power monitoring method and apparatus. The present invention includes: measuring broadened spectrums of optical signals of monitored channels after performing filtering processing on the optical signals, to obtain a measured broadened spectrum of the optical signals of the monitored channels; constructing a plurality of optical signal power combinations; performing calculation for each optical signal power combination according to a transfer function that indicates the filtering processing, to obtain its corresponding theoretical broadened spectrum of the optical signals of the monitored channels; comparing a plurality of theoretical broadened spectrums with the measured broadened spectrum to find a theoretical broadened spectrum that is closest to the measured broadened spectrum; and determining each hypothetical optical power in an optical signal power combination corresponding to the theoretical broadened spectrum as an actual optical power of an optical signal of a corresponding monitored channel.

Abstract translation: 本发明公开了一种光功率监测方法及装置。 本发明包括：在对光信号进行滤波处理之后，测量所监视信道的光信号的扩展频谱，以获得被监测信道的光信号的测量的扩展频谱; 构造多个光信号功率组合; 根据指示滤波处理的传递函数对每个光信号功率组合执行计算，以获得其对所监视的信道的光信号的对应的理论扩展频谱; 将多个理论扩展光谱与测量的扩展光谱进行比较，以找到最接近测量的扩展光谱的理论扩展光谱; 以及将对应于理论扩展频谱的光信号功率组合中的每个假想光功率确定为相应监视信道的光信号的实际光功率。