公开(公告)号：US12100926B2

公开(公告)日：2024-09-24

申请号：US17243656

申请日：2021-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuanbing Cheng ,  Heng Wang ,  Jing Dai ,  Yinghua Dong

IPC: H01S3/10 ,  G02B6/12 ,  H01S5/14 ,  H04B10/69

CPC classification number: H01S3/10023 ,  G02B6/12009 ,  H01S5/141 ,  H04B10/691

Abstract: An embodiment of the present invention provides a photodetector chip, including a substrate, a semiconductor optical amplification section, and a photodetection section. The substrate includes a surface, the photodetection section and the semiconductor optical amplification section are arranged on the substrate, and the photodetection section is located in an optical signal output direction of the semiconductor optical amplification section. The semiconductor optical amplification section amplifies and filters an input optical signal to output an amplified and filtered optical signal to the photodetection section. The photodetection section is configured to convert the amplified and filtered optical signal into an electrical signal. The semiconductor optical amplification section includes a grating, the grating includes a first grating and a second grating that are cascaded, and the first grating is a slanted grating. The first grating and the second grating are configured to filter an optical signal entering the semiconductor optical amplification section.

公开(公告)号：US20230210389A1

公开(公告)日：2023-07-06

申请号：US17922446

申请日：2021-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sulin Yang ,  Yuanbing Cheng

IPC: A61B5/024 ,  A61B5/00

CPC classification number: A61B5/02427 ,  A61B5/681 ,  A61B2560/0223 ,  A61B2560/0468 ,  A61B2562/0242

Abstract: An optical transmitter includes a light source and an adjustment structure. The light source is configured to output an original light spot, to transmit a test optical signal to a skin of a user. The adjustment structure is located on an output optical path of the test optical signal. A test optical signal transmitted from an original light spot center of the original light spot is a central light spot optical signal, and the adjustment structure is configured to scatter the central light spot optical signal in a direction away from the original light spot center, to convert the original light spot

公开(公告)号：US20240006859A1

公开(公告)日：2024-01-04

申请号：US18468071

申请日：2023-09-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guangcan Chen ,  Yuanbing Cheng ,  Yanbo Li

IPC: H01S5/50 ,  H01S5/026 ,  H01S5/34

CPC classification number: H01S5/50 ,  H01S5/0261 ,  H01S5/3407

Abstract: An optical modulation and amplification apparatus, an optical module, an optical network unit, and an optical communication system are provided. The optical modulation and amplification apparatus includes an electric absorption modulator and a semiconductor optical amplifier. The electric absorption modulator and the semiconductor optical amplifier share a same substrate and a same multi-layer material structure. The multi-layer material structure includes, from bottom to top, at least a first quantum well, an electron blocking layer, a second quantum well, and an upper separate confinement layer. The electric absorption modulator is configured to modulate injection light by using the first quantum well, and the semiconductor optical amplifier is configured to amplify the injection light by using the second quantum well.

公开(公告)号：US11711152B2

公开(公告)日：2023-07-25

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: H04B10/00 ,  H04B10/67 ,  H04J14/00

CPC classification number: H04B10/672

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.