公开(公告)号：US20250023641A1

公开(公告)日：2025-01-16

申请号：US18902658

申请日：2024-09-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Romain Brenot ,  Ivan Nicolas Cano Valadez

IPC: H04B10/27

Abstract: An electro-optical device is provided. The device comprises an optical signal source, which is configured to generate a modulated optical signal having a first extinction ratio. The device further comprises an absorber configured to receive the modulated signal and generate an optical output signal from the modulated signal, wherein the output optical signal has a second extinction ratio, which is larger than the first extinction ratio.

公开(公告)号：US20240421563A1

公开(公告)日：2024-12-19

申请号：US18814075

申请日：2024-08-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Romain Brenot ,  Gabriel Charlet ,  Nayla El Dahdah ,  Antonin Gallet ,  Hajar Elfaiki

IPC: H01S5/40 ,  G02B27/28

Abstract: A dummy light module includes a dual semiconductor optical amplifier (SOA) light source configured to emit two substantially identical light emissions. The two light emissions include a first light emission and a second light emission, both having a first polarization. The dummy light module further includes a polarization rotator configured to rotate the second light emission to a second polarization, and a polarization beam combiner configured to generate dummy light by combining the first light emission with the first polarization and the second light emission with the second polarization.

公开(公告)号：US11418001B2

公开(公告)日：2022-08-16

申请号：US17126716

申请日：2020-12-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun Luo ,  Qian Wang ,  Romain Brenot

IPC: H01S3/10 ,  H01S5/00 ,  H01S5/06 ,  H01S5/10 ,  H01S5/12 ,  H01S5/14

Abstract: This application describes a wavelength-tunable laser apparatus, which reduces complexity of wavelength tuning of a laser. The laser includes a reflective gain unit, an optical phase shifter, a coupler, and a passive filter unit array. Furthermore, an output port of the reflective gain unit is connected to an input port of the optical phase shifter, an output port of the optical phase shifter is connected to an input port of the coupler, a first output port of the coupler is connected to an input port of the passive filter unit array, and a second output port of the coupler is an output port of the laser. The passive filter unit array includes a plurality of passive filter units, where any two of the plurality of passive filter units have different wavelength tuning ranges, and each filter unit has a linearly tunable wavelength.