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    BI-DIRECTIONAL OPTICAL SUB-ASSEMBLY, OPTICAL NETWORK UNIT, OPTICAL LINE TERMINAL, AND PASSIVE OPTICAL NETWORK SYSTEM
    1.
    发明申请
    BI-DIRECTIONAL OPTICAL SUB-ASSEMBLY, OPTICAL NETWORK UNIT, OPTICAL LINE TERMINAL, AND PASSIVE OPTICAL NETWORK SYSTEM 审中-公开

    公开(公告)号：US20200012055A1

    公开(公告)日：2020-01-09

    申请号：US16572729

    申请日：2019-09-17

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Zhicheng YE ,  Jian CHEN ,  Shengping LI

    IPC: G02B6/42 ,  G02B6/34 ,  H04J14/02 ,  G02B6/32 ,  H04B10/40 ,  G02B6/293

    Abstract: Embodiments relate to the field of optical communications technologies. The bi-directional optical sub-assembly includes a transmitter optical path sub-assembly, a receiver optical sub-assembly, a wavelength division multiplexing sub-assembly, and an optical fiber interface. The transmitter optical path sub-assembly is configured to: generate emitted light and provide the emitted light for the wavelength division multiplexing sub-assembly; the wavelength division multiplexing sub-assembly is configured to: transparently transmit, to the optical fiber interface, the emitted light from the transmitter optical path sub-assembly, and reflect, to the receiver optical sub-assembly, received light from the optical fiber interface; the optical fiber interface is configured to: transmit, to the outside, the emitted light from the wavelength division multiplexing sub-assembly, and transmit, to the wavelength division multiplexing sub-assembly, received light received from the outside; and the receiver optical sub-assembly is configured to receive the received light reflected by the wavelength division multiplexing sub-assembly.

    METHOD FOR SWITCHING MODULATION FORMAT OF PASSIVE OPTICAL NETWORK, APPARATUS, AND SYSTEM
    2.
    发明申请
    METHOD FOR SWITCHING MODULATION FORMAT OF PASSIVE OPTICAL NETWORK, APPARATUS, AND SYSTEM 审中-公开

    公开(公告)号：US20180343065A1

    公开(公告)日：2018-11-29

    申请号：US16054388

    申请日：2018-08-03

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Shengping LI ,  Zhicheng YE ,  Xuming WU

    IPC: H04B10/516 ,  H04Q11/00

    CPC classification number: H04B10/516 ,  H04B10/27 ,  H04Q11/0005 ,  H04Q11/0067 ,  H04Q2011/0045 ,  H04Q2011/0079

    Abstract: Embodiments of the present invention disclose a method for switching a modulation format of a passive optical network, an apparatus, and a system. The method includes: separately delivering, by an OLT, a registration message to an optical network unit in all supported upstream modulation formats and/or downstream modulation formats; receiving, by the OLT, a first message reported by the optical network unit, where the first message includes an upstream modulation format capability and/or a downstream modulation format capability; and determining, by the OLT, a target upstream modulation format and/or a target downstream modulation format of the optical network unit according to the first message, and instructing the optical network unit to switch to the target upstream modulation format and/or the target downstream modulation format. Therefore, in a PON system that supports a plurality of modulation formats, a modulation format reporting capability of the ONU is improved.

    RECEIVER, OPTICAL LINE TERMINAL, AND PASSIVE OPTICAL NETWORK SYSTEM
    3.
    发明申请
    RECEIVER, OPTICAL LINE TERMINAL, AND PASSIVE OPTICAL NETWORK SYSTEM 有权

    公开(公告)号：US20220239381A1

    公开(公告)日：2022-07-28

    申请号：US17722907

    申请日：2022-04-18

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

    IPC: H04B10/67

    Abstract: Example optical devices are described. One example optical device includes a receiver. The receiver includes 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. The second amplifier is configured to convert the first voltage signal into a second voltage signal.

    STATUS CONTROL METHOD, DATA SENDING METHOD, AND TERMINAL
    5.
    发明申请
    STATUS CONTROL METHOD, DATA SENDING METHOD, AND TERMINAL 有权

    公开(公告)号：US20220224429A1

    公开(公告)日：2022-07-14

    申请号：US17707534

    申请日：2022-03-29

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Shengping LI ,  Lei JING ,  Jun ZHOU ,  Xuming WU

    IPC: H04J3/06 ,  H04J14/02

    Abstract: A status control method, applied to an optical network unit (ONU) or an optical network terminal (ONT) of a passive optical network (PON) includes: receiving a first downlink data frame, where the first downlink data frame includes data of N different rates and indication information, the indication information includes length information of data of each rate in the first downlink data frame, and N≥2; determining length information of first data in the data of the N different rates, where a rate of the first data is higher than a working rate of a clock and data recovery (CDR) module; and generating control information based on the length information of the first data, to control the CDR module to be in a specified state within a period of time corresponding to the length information of the first data.

    BOARD, OPTICAL MODULE, OLT, AND INFORMATION PROCESSING METHOD
    6.
    发明申请
    BOARD, OPTICAL MODULE, OLT, AND INFORMATION PROCESSING METHOD 有权

    公开(公告)号：US20210250096A1

    公开(公告)日：2021-08-12

    申请号：US17244298

    申请日：2021-04-29

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Lei ZHOU ,  Shiwei NIE ,  Shengping LI ,  Bo GAO

    IPC: H04B10/27 ,  H04J14/00 ,  H04L25/03

    Abstract: Embodiments of this application disclose a board, an optical module, a MAC chip, a DSP, and an information processing method. The board in the embodiments of this application includes a media access control (MAC) chip, a digital signal processor (DSP), and an equalizer. The MAC chip is configured to send first information to the DSP at an optical network unit (ONU) online stage, where the first information includes a first ONU identifier. The DSP is configured to receive the first information, and determine a first reference equalization parameter, where the first reference equalization parameter is related to the first ONU identifier. The DSP is further configured to set an equalization parameter of the equalizer to the first reference equalization parameter.

    UPSTREAM DATA EQUALIZATION METHOD, APPARATUS, AND SYSTEM CROSS-REFERENCE TO RELATED APPLICATIONS
    7.
    发明申请
    UPSTREAM DATA EQUALIZATION METHOD, APPARATUS, AND SYSTEM CROSS-REFERENCE TO RELATED APPLICATIONS 审中-公开

    公开(公告)号：US20190116404A1

    公开(公告)日：2019-04-18

    申请号：US16218665

    申请日：2018-12-13

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jianyu ZHENG ,  Shengping LI ,  Xuming WU

    IPC: H04Q11/00

    Abstract: Embodiments relate to the field of PON technologies, and provide a method, apparatus, and system. The method includes: receiving capability information that is sent by an ONU by using a first preamble; calculating a tap coefficient based on the received first preamble if the capability information indicates that the ONU has an equalization capability; sending the tap coefficient to the ONU, where the ONU updates a tap coefficient of a first equalizer in the ONU based on the received tap coefficient, and when subsequently sending upstream data, sends, by using a second preamble, the upstream data equalized by using the first equalizer, and a length of the second preamble is less than a length of the first preamble; receiving the upstream data; and equalizing the received upstream data based on the second preamble by using a second equalizer in an OLT. In this way, upstream overheads can be reduced.

    MULTIPLEXER/DEMULTIPLEXER AND PASSIVE OPTICAL NETWORK SYSTEM
    8.
    发明申请
    MULTIPLEXER/DEMULTIPLEXER AND PASSIVE OPTICAL NETWORK SYSTEM 审中-公开

    公开(公告)号：US20190036609A1

    公开(公告)日：2019-01-31

    申请号：US16120436

    申请日：2018-09-03

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Dekun LIU ,  Shengping LI

    IPC: H04B10/50 ,  H04J14/02 ,  H04B10/2507 ,  H04B10/27 ,  H04J14/08

    CPC classification number: H04B10/504 ,  H04B10/2507 ,  H04B10/2513 ,  H04B10/27 ,  H04J14/02 ,  H04J14/0202 ,  H04J14/08

    Abstract: A multiplexer/demultiplexer and a passive optical network system are provided. The multiplexer/demultiplexer includes N optical multiplexing/demultiplexing modules. The optical multiplexing/demultiplexing modules multiplex signals with different wavelengths from a plurality of ports to a same port, or demultiplex signals with different wavelengths from one port to different ports. The N optical multiplexing/demultiplexing modules correspond to the signals with different wavelengths. In the optical multiplexing/demultiplexing modules, a negative dispersion amount and an insertion loss of an Mth optical multiplexing/demultiplexing module are less than those of an (M+1)th optical multiplexing/demultiplexing module, where N is a positive integer, and M is a positive integer less than or equal to N. The multiplexer/demultiplexer and the passive optical network system increase an optical power budget between an optical transmitter and an optical transceiver.

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