公开(公告)号：US20210249835A1

公开(公告)日：2021-08-12

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 ,  H01S5/14 ,  G02B6/12

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：US20210296859A1

公开(公告)日：2021-09-23

申请号：US17333289

申请日：2021-05-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuanbing CHENG ,  Jing DAI ,  Yinghua DONG ,  Sulin YANG

IPC: H01S5/12 ,  H04J14/02 ,  H01S5/34

Abstract: A semiconductor laser, an optical transmitter component, an optical line terminal, and an optical network unit. The semiconductor laser includes a substrate, a lower waveguide layer, a lower confining layer, a central layer, an upper confining layer, a grating layer, an upper waveguide layer, and an electrode layer that are sequentially formed on the substrate. The upper confining layer, the central layer, and the lower confining layer in a filtering region form a core layer of the filtering region. The grating layer in the filtering region includes a slanted grating. Thus, a modulation chirp and dispersion of a transmitted optical pulse can be reduced.