公开(公告)号：EP4429265A1

公开(公告)日：2024-09-11

申请号：EP23759242.3

申请日：2023-02-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： YE, Zhicheng ,  XU, Benbo ,  ZHENG, Zongzhao ,  CHANG, Tianhai

IPC: H04Q11/00

CPC classification number: H04Q11/00 ,  H04L41/12

Abstract: Embodiments of this application disclose an optical distribution network ODN apparatus and a signal processing method, to transmit information such as identification information of a plurality of ONUs and port identification information of the ODN apparatus to an OLT. The information such as the identification information of the plurality of ONUs and the port identification information is used by the OLT to determine network topology information of a PON system. The ODN apparatus includes an optical splitting module, a control chip, a first optical port connected to the OLT, a second optical port connected to a next-level ODN apparatus, and a plurality of third photoelectric composite ports connected to the plurality of ONUs. The control chip separately sends a plurality of electrical signals that carry the port identification information to the plurality of corresponding ONUs. The optical splitting module performs power splitting on a first optical signal sent by the OLT to obtain a second optical signal transmitted to the next-level ODN apparatus and a plurality of third optical signals transmitted to the plurality of ONUs. The optical splitting module is further configured to: separately receive upstream optical signals of the plurality of corresponding ONUs, and transmit the upstream optical signals to the OLT, where the upstream optical signals carry identification information of the ONUs that send the upstream optical signals and corresponding port identification information.

公开(公告)号：EP4024729A1

公开(公告)日：2022-07-06

申请号：EP20888581.4

申请日：2020-08-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： JING, Lei ,  JIN, Junye ,  CHANG, Tianhai ,  LI, Shengping ,  CHENG, Yuanbing ,  LIN, Huafeng

IPC: H04B10/60

Abstract: A receiver is provided, including a photodetector, a first amplifier, a second amplifier, and a controller, where the photodetector is coupled to the first amplifier, the first amplifier is coupled to the second amplifier, and the first amplifier and the second amplifier are separately coupled to the controller. The controller is configured to control a gain of the first amplifier and a gain of the second amplifier based on a preset arrival time of an optical signal and a gain intensity corresponding to the optical signal; the photodetector is configured to receive the optical signal and convert the optical signal into a current signal; the first amplifier is configured to convert the current signal into a first voltage signal; and the second amplifier is configured to convert the first voltage signal into a second voltage signal. When different optical signals arrive at the receiver, the controller may control and adjust a gain of the first amplifier and a gain of the second amplifier to corresponding gain values based on each optical signal, to implement reception of an optical signal in a wide dynamic range, reduce convergence time required for receiving the optical signal, and improve uplink bandwidth efficiency.

公开(公告)号：EP3624363A1

公开(公告)日：2020-03-18

申请号：EP18817604.4

申请日：2018-03-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： CHANG, Tianhai

IPC: H04B10/25 ,  H04J14/02

Abstract: This application relates to the field of communications technologies, and provides a method and an apparatus for spectrum defragmentation, a device, and a system. The method includes: obtaining, by a transmit end, a target data stream; sending the target data stream on one line by using a to-be-adjusted frequency band; then adjusting, on another line, an occupied frequency band of the target data stream from the to-be-adjusted frequency band to a target frequency band; and then switching the target data stream to the another line, and transmitting the target data stream by using the target frequency band. In this application, effective spectrum defragmentation can be implemented, thereby increasing utilization of a spectrum resource.

公开(公告)号：EP2528254B1

公开(公告)日：2016-09-07

申请号：EP10842868.1

申请日：2010-07-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： SHEN, Xinyu ,  ZHANG, Jianmei ,  LI, Congqi ,  CHANG, Tianhai ,  LIU, Hao ,  LIU, Zhiguo

IPC: H04J3/06 ,  H04L12/28

CPC classification number: H04J3/0602 ,  H04J3/0667 ,  H04J14/0201

公开(公告)号：EP4277050A1

公开(公告)日：2023-11-15

申请号：EP22749140.4

申请日：2022-01-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： CHEN, Guangcan ,  CHENG, Yuanbing ,  CHANG, Tianhai

IPC: H01S5/062 ,  H01S5/026

Abstract: Embodiments of this application disclose a laser apparatus, applied to the field of optical communication. The apparatus includes: a laser device region, an electrical isolation region and a power adjustment region. When a laser bias voltage is applied in the laser device region, a first active layer generates a target optical signal, and the target optical signal is introduced into the power adjustment region that is optically coupled to the laser device region. The power adjustment region includes a second active layer. When a forward bias voltage is applied in the power adjustment region, the second active layer amplifies the target optical signal, and/or when a reverse bias voltage is applied in the power adjustment region, the second active layer attenuates the target optical signal. By amplifying or attenuating the target optical signal through the power tuning region, the apparatus disclosed in this application reduces a requirement of an optical line terminal OLT on a dynamic adjustment range of a burst-mode trans-impedance amplifier BM-TIA, thereby reducing device costs.

公开(公告)号：EP4262108A1

公开(公告)日：2023-10-18

申请号：EP22752173.9

申请日：2022-01-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： HUANG, Yuanda ,  ZHANG, Xin ,  CHANG, Tianhai

IPC: H04B10/291 ,  G02B6/28

Abstract: This application discloses an optical coupler, a communication method, and a communication system, and belongs to the communication field. The communication system includes N transmitters, M receivers, and an optical coupler, where both N and M are positive integers greater than 1. Each of the N transmitters is configured to send one first optical signal to the optical coupler. The optical coupler is configured to couple N first optical signals sent by the N transmitters into one second optical signal, and broadcast the second optical signal to the M receivers. Each of the M receivers is configured to receive the second optical signal sent by the optical coupler, and demodulate the second optical signal. In this application, a communication delay in the communication system can be reduced.

公开(公告)号：EP4141519A1

公开(公告)日：2023-03-01

申请号：EP21805063.1

申请日：2021-05-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： YAN, Yunfei ,  CHANG, Tianhai ,  HUANG, Zhiyong

IPC: G02B27/01 ,  B60K35/00

Abstract: A display apparatus (1) and a display system are provided, and relate to the field of display device technologies, to enhance visual experience generated when a picture is displayed by using an existing reflective display window such as a windshield (2) and a bathroom mirror (3), so that a sense of presence and immersion is improved. The display apparatus (1) includes an image generation unit (11) and an optical imaging unit (12). The image generation unit (11) is configured to generate a real image (a) whose display surface is a curved surface. The optical imaging unit (12) is configured to perform imaging on the real image (a), to generate an enlarged virtual image (b) corresponding to the real image (a), where a display surface of the virtual image (b) is a curved surface adaptive to the display surface of the real image (a). The display apparatus (1) is configured to display the picture by using the existing reflective display window such as the windshield (2) and the bathroom mirror (3).

公开(公告)号：EP3637637A1

公开(公告)日：2020-04-15

申请号：EP17916700.2

申请日：2017-07-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： ZHOU, Enbo ,  CHANG, Tianhai

IPC: H04B10/077

Abstract: This application discloses an optical amplifier apparatus, an optical communications station, and an optical communications system, to reduce an insertion loss of an optical communications link. The optical amplifier apparatus includes a first amplifier unit and a hybrid filter unit. The first amplifier unit is configured to receive a first beam sent by a second station, where the first beam includes signal light and first monitoring light. The first amplifier unit is further configured to amplify the first beam to obtain a second beam. The hybrid filter unit is configured to: receive the second beam output by the first amplifier unit, and separate the first monitoring light and the signal light from the second beam. The hybrid filter unit is further configured to: transmit the first monitoring light in the second beam to a monitoring light detection apparatus of a first station through a first output port. The hybrid filter unit is further configured to: perform gain flattening filtering processing on the signal light in the second beam to obtain filtered signal light, and output the filtered signal light through a second output port.

公开(公告)号：EP3247078B1

公开(公告)日：2019-03-27

申请号：EP15880943.4

申请日：2015-10-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： WANG, Buyun ,  XIAO, Xinhua ,  CHANG, Tianhai

IPC: H04L12/801 ,  H04Q11/00

公开(公告)号：EP2161866A1

公开(公告)日：2010-03-10

申请号：EP08748677.5

申请日：2008-05-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： LI, Congqi ,  HUANG, Zhiyong ,  CHANG, Zhiwen ,  JIN, Yuzhi ,  HE, Da ,  ZHANG, Jianmei ,  NIU, Shouchang ,  LI, Shixing ,  CHANG, Tianhai ,  SONG, Jinghua

IPC: H04J14/02

CPC classification number: H04J14/0227 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/0256 ,  H04J14/0279

Abstract: An upgrading method, a system, and an apparatus of a low-density wavelength division multiplexing (WDM) system are provided. The method includes: detecting an output wavelength shift of a wavelength conversion unit, and adjusting an output wavelength of the wavelength conversion unit having the output wavelength shift higher than a threshold, so that the output wavelength shift of the wavelength conversion unit is lower than the threshold; adjusting an adjustable interleaved demultiplexer, until requirements for a demultiplexing parameter of a high-density WDM system are met. Thus, the problem that services are interrupted when a low-density MDM system is upgraded to a high-density MDM system is solved. A WDM system, and a wavelength multiplexing/demultiplexing apparatus and method are also provided.

Abstract translation: 提供了一种低密度波分复用（WDM）系统的升级方法，系统和设备。 该方法包括：检测波长转换单元的输出波长偏移，并且调整输出波长偏移高于阈值的波长转换单元的输出波长，使得波长转换单元的输出波长偏移低于 阈; 调整可调交织解复用器，直到符合对高密度WDM系统的解复用参数的要求。 因此，解决了当低密度MDM系统升级到高密度MDM系统时服务中断的问题。 还提供了一种WDM系统和波长复用/解复用设备和方法。