公开(公告)号：US20230113709A1

公开(公告)日：2023-04-13

申请号：US18070126

申请日：2022-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiwei Li ,  Zhongzhi Shang ,  Wenjun Shi

IPC: H04B10/50 ,  H04B10/40 ,  H01S5/042

Abstract: A transmitter circuit, an optical module, and a communications device is disclosed. A transmitter circuit includes a driver and a directly modulated laser DML. A positive electrode of the driver is connected to a positive electrode of the DML, a negative electrode of the DML is connected to a voltage terminal, and the negative electrode of the DML is connected to a ground terminal through a capacitor. The driver is configured to generate a drive current based on an input signal, and output the drive current to the DML through the positive electrode of the driver. The DML inputs a first part of current of the drive current to the ground terminal through the capacitor, and the DML inputs a second part of current of the drive current to the voltage terminal.

公开(公告)号：US12113576B2

公开(公告)日：2024-10-08

申请号：US18070126

申请日：2022-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiwei Li ,  Zhongzhi Shang ,  Wenjun Shi

IPC: H04B10/50 ,  H01S5/042 ,  H04B10/40

CPC classification number: H04B10/504 ,  H01S5/042 ,  H04B10/40

Abstract: A transmitter circuit, an optical module, and a communications device is disclosed. A transmitter circuit includes a driver and a directly modulated laser DML. A positive electrode of the driver is connected to a positive electrode of the DML, a negative electrode of the DML is connected to a voltage terminal, and the negative electrode of the DML is connected to a ground terminal through a capacitor. The driver is configured to generate a drive current based on an input signal, and output the drive current to the DML through the positive electrode of the driver. The DML inputs a first part of current of the drive current to the ground terminal through the capacitor, and the DML inputs a second part of current of the drive current to the voltage terminal.