公开(公告)号：US20230138252A1

公开(公告)日：2023-05-04

申请号：US18147809

申请日：2022-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guangcan MI ,  Zeshan CHANG ,  Tianhai CHANG

IPC: H04B10/50 ,  H04B10/572

Abstract: An optical transmitter, including a wavelength selector and a plurality of modulator groups, is proposed. Each modulator group includes a plurality of modulators, and operating wavelengths of any two modulators in a same modulator group are different. The wavelength selector is configured to: obtain a first beam from a multi-wavelength light source, and generate a second beam based on the first beam, where the second beam includes some of the plurality of wavelengths. A first modulator in a first modulator group is configured to modulate first to-be-sent data onto a first wavelength in the second beam.

公开(公告)号：US20240113799A1

公开(公告)日：2024-04-04

申请号：US18541452

申请日：2023-12-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chen LIU ,  Guangcan MI ,  Zeshan CHANG

IPC: H04J14/02 ,  H04B10/294 ,  H04Q11/00

CPC classification number: H04J14/0212 ,  H04B10/294 ,  H04Q11/0005 ,  H04Q2011/0007

Abstract: The present disclosure describes a service optical signal transmission method, a network device, and an optical network. A network device includes a light source module. The light source module is connected to a plurality of wavelength selection modules. Each of the plurality of wavelength selection modules is connected to a respective first optical transceiver, and different wavelength selection modules are connected to different first optical transceivers. The light source module transmits M first optical signals to each of the plurality of wavelength selection modules, where M is a positive integer greater than 1. Each of the plurality of wavelength selection modules transmits K second optical signals to the respective first optical transceiver, where K is a positive integer less than or equal to M. The respective first optical transceiver modulates a service electrical signal on each of the K second optical signals to output K service optical signals.

公开(公告)号：US20230239067A1

公开(公告)日：2023-07-27

申请号：US18190733

申请日：2023-04-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guangcan MI ,  Xu SUN ,  Yanbo LI

IPC: H04J14/02 ,  H04B10/293

CPC classification number: H04J14/0221 ,  H04B10/293 ,  H04J14/0201

Abstract: Example optical signal processing apparatuses and methods are provided. One example apparatus includes: N light sources, a wavelength multiplexer, an optical processor, a dither application circuit, a first detection circuit, a second detection circuit, and a feedback control circuit. The light source generates a single-wavelength signal. The dither application circuit applies a dither signal to the light source. The wavelength multiplexer generates a multi-wavelength signal based on the single-wavelength signal. The first detection circuit is configured to obtain a first power signal of a signal input to the optical processor. The second detection circuit is configured to obtain a second power signal of a signal output from the optical processor. The feedback control circuit adjusts a working parameter of the optical processor based on the dither signal corresponding to the single-wavelength signal, the first power signal, and the second power signal.

公开(公告)号：US20230007370A1

公开(公告)日：2023-01-05

申请号：US17941269

申请日：2022-09-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guangcan MI ,  Ruiqiang JI ,  Zeshan CHANG

IPC: H04Q11/00 ,  H04B10/2513 ,  H04J14/02

Abstract: An optical module is disclosed. The optical module includes a first downlink port, a second downlink port, a directional coupler, a optical attenuator, a first photodiode (PD), and a second PD. The directional coupler, connected to the first downlink port, is configured to receive a downlink optical signal. The second PD connected to the directional coupler, is configured to obtain a power value. If the power value is greater than a first threshold, the optical attenuator is configured to receive a attenuation control signal, and attenuate, based on the attenuation control signal, a power of an optical signal passing through the second downlink port. The first PD is configured to: convert the downlink optical signal into a downlink electrical signal, and convert the optical signal passing through the second downlink port into an electrical signal. Both the first downlink port and the second downlink port are connected to the first PD.