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    RECEIVER OPTICAL SUB-ASSEMBLY, BI-DIRECTIONAL OPTICAL SUB-ASSEMBLY, OPTICAL MODULE, AND OPTICAL NETWORK DEVICE
    1.
    发明申请
    RECEIVER OPTICAL SUB-ASSEMBLY, BI-DIRECTIONAL OPTICAL SUB-ASSEMBLY, OPTICAL MODULE, AND OPTICAL NETWORK DEVICE 有权

    公开(公告)号：US20220158740A1

    公开(公告)日：2022-05-19

    申请号：US17557450

    申请日：2021-12-21

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Rixiang CAO ,  Yu XIONG ,  Zelin WANG ,  Zhe YU

    IPC: H04B10/67 ,  H04B10/40 ,  H04B10/69 ,  H03F3/08

    Abstract: This application provides a receiver optical sub-assembly, a bi-directional optical sub-assembly, and an optical network device to improve anti-electromagnetic crosstalk performance of the receiver optical sub-assembly. The receiver optical sub-assembly includes: a photodiode, a trans-impedance amplifier, and a first filter component. The photodiode is configured to convert an optical signal into an electrical signal, a positive electrode of the photodiode is connected to an input terminal of the trans-impedance amplifier, and a negative electrode of the photodiode is configured to connect to a power supply. The trans-impedance amplifier is configured to amplify the electrical signal output by the photodiode, a power terminal of the trans-impedance amplifier is configured to connect to a power supply, and a first ground terminal of the trans-impedance amplifier is configured to connect to an external ground.

    OPTICAL RECEIVER
    2.
    发明申请
    OPTICAL RECEIVER 有权

    公开(公告)号：US20220174379A1

    公开(公告)日：2022-06-02

    申请号：US17548793

    申请日：2021-12-13

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Shengmeng FU ,  Yu XIONG ,  Jiangwei MAN ,  Chengyan WANG ,  Xiaofei ZENG ,  Li ZENG

    IPC: H04Q11/00 ,  H04B10/69

    Abstract: An optical receiver is disclosed, including an optoelectronic detector, a transimpedance amplification (TIA) circuit, a single-ended-to-differential converter, an I/O interface, and a controller. The optoelectronic detector, having bandwidth lower than required system transmission bandwidth, converts an optical signal into a current signal. The TIA circuit compensate gain for the received current signal based on a received control signal, to obtain a voltage signal, where a frequency response value of the current signal within first bandwidth is greater than that within the bandwidth of the optoelectronic detector, and any frequency in the first bandwidth is not lower than an upper cut-off frequency of the optoelectronic detector. The single-ended-to-differential converter converts the voltage signal into a differential voltage signal. The I/O interface outputs the differential voltage signal. The controller generates the control signal based on the differential voltage signal. The optical receiver disclosed can reduce costs while ensuring signal quality.

    OPTICAL RECEIVER
    4.
    发明申请
    OPTICAL RECEIVER 有权

    公开(公告)号：US20210152901A1

    公开(公告)日：2021-05-20

    申请号：US16952912

    申请日：2020-11-19

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Shengmeng FU ,  Yu XIONG ,  Jiangwei MAN ,  Chengyan WANG ,  Xiaofei ZENG ,  Li ZENG

    IPC: H04Q11/00 ,  H04B10/69

    Abstract: An optical receiver is disclosed, including an optoelectronic detector, a transimpedance amplification (TIA) circuit, a single-ended-to-differential converter, an I/O interface, and a controller. The optoelectronic detector, having bandwidth lower than required system transmission bandwidth, converts an optical signal into a current signal. The TIA circuit compensate gain for the received current signal based on a received control signal, to obtain a voltage signal, where a frequency response value of the current signal within first bandwidth is greater than that within the bandwidth of the optoelectronic detector, and any frequency in the first bandwidth is not lower than an upper cut-off frequency of the optoelectronic detector. The single-ended-to-differential converter converts the voltage signal into a differential voltage signal. The I/O interface outputs the differential voltage signal. The controller generates the control signal based on the differential voltage signal. The optical receiver disclosed can reduce costs while ensuring signal quality.

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