公开(公告)号：US11848710B2

公开(公告)日：2023-12-19

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: H04B10/06 ,  H04B10/40 ,  H04B10/69 ,  H03F3/08 ,  H04B10/67

CPC classification number: H04B10/67 ,  H03F3/08 ,  H04B10/40 ,  H04B10/691 ,  H04B10/697

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.