公开(公告)号：US09941969B2

公开(公告)日：2018-04-10

申请号：US15282697

申请日：2016-09-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Juan Wang ,  Ning Deng ,  Xiaodong Luo ,  Zhiyong Feng

IPC: H04B10/04 ,  H04B10/50 ,  H04B10/079 ,  H04B10/54

CPC classification number: H04B10/5057 ,  H04B10/0795 ,  H04B10/541 ,  H04B2210/075

Abstract: A transmitter includes a pilot loading apparatus, an optical modulator, and a pilot locking apparatus. The pilot locking apparatus is configured to determine a pilot operating point that is currently on a response curve and that is of the optical modulator, and a target initial amplitude of an electrical pilot signal. The pilot locking apparatus is further configured to control the pilot loading apparatus to adjust an initial amplitude of the electrical pilot signal to the target initial amplitude.

公开(公告)号：US09621263B2

公开(公告)日：2017-04-11

申请号：US14493540

申请日：2014-09-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yijia Wei ,  Juan Ni ,  Zhiyong Feng ,  Ning Deng

IPC: H04B10/079 ,  H04B10/077

CPC classification number: H04B10/07953 ,  H04B10/0775 ,  H04B2210/075

Abstract: The present invention discloses a method and an apparatus for detecting an optical signal-to-noise ratio, a node device, and a network system. The method includes: receiving a detected optical signal carrying amplified spontaneous emission ASE noise; detecting a first alternating current component and a first direct current component of the detected optical signal; acquiring first modulation information of the detected optical signal; acquiring first correction information corresponding to the first modulation information according to the first modulation information; and determining an optical signal-to-noise ratio OSNR of the detected optical signal according to the first alternating current component, the first direct current component, and the first correction information.

公开(公告)号：US09172475B2

公开(公告)日：2015-10-27

申请号：US14318356

申请日：2014-06-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sen Zhang ,  Zhiyong Feng ,  Jianrui Han

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

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08831422B2

公开(公告)日：2014-09-09

申请号：US13728686

申请日：2012-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiyong Feng ,  Shaofeng Qiu ,  Yijia Wei

IPC: H04B10/071 ,  G01M11/00

CPC classification number: H04B10/071 ,  G01M11/3127

Abstract: The present invention relates to the field of communication transmission, and in particular, to a method for generating a probe pulse and a coherent optical time domain reflectometer. The coherent optical time domain reflectometer includes: a control unit, configured to generate a first pulse signal and a second pulse signal which have a same period T, where the second pulse signal lags behind the first pulse signal, and T satisfies T≧t+2L/C; a driving unit, configured to generate a frequency change driving signal according to the first pulse signal; a continuous light laser device, configured to generate, as driven by the frequency change driving signal, continuous light having a changing frequency and an unchanging frequency spectrum width; and a probe pulse generating unit, configured to modulate the continuous light according to the second pulse signal to generate a probe pulse.

Abstract translation: 本发明涉及通信传输领域，特别涉及用于产生探针脉冲和相干光时域反射计的方法。 相干光时域反射计包括：控制单元，被配置为产生具有相同周期T的第一脉冲信号和第二脉冲信号，其中第二脉冲信号滞后于第一脉冲信号，T满足T≥t+ 2L / C; 驱动单元，被配置为根据所述第一脉冲信号产生变频驱动信号; 连续光激光器件，被配置为产生由所述变频驱动信号驱动的具有变化频率和不变频谱宽度的连续光; 以及探针脉冲发生单元，被配置为根据所述第二脉冲信号调制所述连续光以产生探针脉冲。