公开(公告)号：US20130114954A1

公开(公告)日：2013-05-09

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

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，并且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。

公开(公告)号：US10965095B2

公开(公告)日：2021-03-30

申请号：US16786644

申请日：2020-02-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaodong Luo ,  Shaofeng Qiu ,  Bo Wu

IPC: H04B10/02 ,  H01S3/23 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H04J14/02

Abstract: An optical amplification system includes: a first amplification module configured to amplify at least a conventional band (C band) optical signal; a second amplification module configured to amplify a longer wavelength band (L band) optical signal; an attenuator configured to attenuate at least the C band optical signal to obtain a first optical signal and a second optical signal, where the attenuator is further configured to output the first optical signal to the second amplification module and output the second optical signal to a wavelength division multiplexing module, which is configured to combine and output the C band optical signal and the L band optical signal.

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。