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：US10135524B2

公开(公告)日：2018-11-20

申请号：US15687220

申请日：2017-08-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yansui Huang ,  Xiaodong Luo

IPC: H04B10/071

Abstract: A method for compensating for a signal error at a transmit end of an optical time domain reflectometer is provided. The method includes: detecting an actual signal sequence of a PN sequence sent by a transmitter to a measured optical fiber and an actual signal sequence of an optical signal and reflected back by the measured optical fiber and received by a receiver; obtaining a compensation value of the optical signal that attenuates in a process in which the optical signal is reflected by the measured optical fiber; computing an optical fiber attenuation curve function obtained through a current iteration; and determining, when determining that the optical fiber attenuation curve function obtained through the current iteration satisfies a given condition, performance of the measured optical fiber according to the optical fiber attenuation curve function obtained through the current iteration.

公开(公告)号：US10063314B2

公开(公告)日：2018-08-28

申请号：US15449133

申请日：2017-03-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaodong Luo ,  Yansui Huang ,  Ning Deng

IPC: H04B10/071 ,  H04J14/02

CPC classification number: H04B10/071 ,  G01M11/3118 ,  G01M11/3145 ,  H04J14/02

Abstract: An optical time domain reflectometer and a method for detecting an optical fiber are disclosed. In an embodiment the optical time domain reflectometer includes: a service signal generator, a signal coupler connected to the service signal generator, an electro-optical modulator connected to the signal coupler, a transmitter connected to the electro-optical modulator, a photoelectric detector connected to the transmitter, and an analog to digital converter connected to the photoelectric detector. The optical time domain reflectometer further includes: a digital signal processor, connected to the service signal generator, the signal coupler, and the analog to digital converter, and configured to generate compensation data and a PN code sequence, receive a sampled signal sent by the analog to digital converter, and calculate a first optical fiber function.

公开(公告)号：US20170180042A1

公开(公告)日：2017-06-22

申请号：US15449133

申请日：2017-03-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaodong Luo ,  Yansui Huang ,  Ning Deng

IPC: H04B10/071 ,  H04J14/02

CPC classification number: H04B10/071 ,  G01M11/3118 ,  G01M11/3145 ,  H04J14/02

Abstract: An optical time domain reflectometer and a method for detecting an optical fiber are disclosed. In an embodiment the optical time domain reflectometer includes: a service signal generator, a signal coupler connected to the service signal generator, an electro-optical modulator connected to the signal coupler, a transmitter connected to the electro-optical modulator, a photoelectric detector connected to the transmitter, and an analog to digital converter connected to the photoelectric detector. The optical time domain reflectometer further includes: a digital signal processor, connected to the service signal generator, the signal coupler, and the analog to digital converter, and configured to generate compensation data and a PN code sequence, receive a sampled signal sent by the analog to digital converter, and calculate a first optical fiber function.

公开(公告)号：US20240201890A1

公开(公告)日：2024-06-20

申请号：US18591561

申请日：2024-02-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chenxu Zhang ,  Xiaodong Luo

IPC: G06F3/06

CPC classification number: G06F3/065 ,  G06F3/0619 ,  G06F3/0679

Abstract: This disclosure related a data processing method and apparatus. The method includes: A processor or a network interface card of a client generates a first copy and a second copy of data. The network interface card of the client writes the first copy into a first address in a memory of a storage device and the second copy into a second address in the memory in a one-time unilateral remote memory access RDMA manner. Alternatively, a network interface card of the storage device respectively writes the first copy and the second copy of the data into the first address and the second address in the memory according to a unilateral RDMA write request sent by the client.

公开(公告)号：US10148351B2

公开(公告)日：2018-12-04

申请号：US15074243

申请日：2016-03-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiping Jiang ,  Minggang Si ,  Dajiang Jin ,  Xiaodong Luo ,  Jianhong Ke

IPC: H04B10/077 ,  H04B10/69 ,  H04J14/02 ,  H04B10/516

Abstract: A system monitors optical performance of an optical link within an optical network. The system includes an optical transmitter having an expanded-spectrum pilot-tone modulator for modulating an expanded-spectrum pilot tone onto a high-speed data signal to generate an expanded-spectrum optical signal and an optical receiver for receiving the expanded-spectrum optical signal and for detecting and decoding the expanded-spectrum pilot tone to enable monitoring of the optical performance of the optical link.