公开(公告)号：US20250164830A1

公开(公告)日：2025-05-22

申请号：US19023080

申请日：2025-01-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Youxi Lin ,  Talha Rahman ,  Maxim Kuschnerov ,  Zhiwei Li ,  Rongfang Huang

IPC: G02F1/09 ,  G02F1/01

Abstract: The disclosure relates to an optical device for wavelength division multiplexing of two or more input beams. The disclosure proposes the optical device, and a corresponding method for operating the optical device. The optical device comprises a multiplexer and two or more channels for the two or more input beams, wherein each channel is configured to receive one input beam of the two or more input beams and to provide a rotated beam, which has a polarization rotated compared to a polarization of the corresponding input beam, to the multiplexer, and wherein at least one channel of the two or more channels is configured to rotate the polarization of the corresponding input beam in a different direction than at least one other channel of the two or more channels.

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.

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.