公开(公告)号：US20210203124A1

公开(公告)日：2021-07-01

申请号：US17203337

申请日：2021-03-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ivan Nicolas CANO VALADEZ ,  Romain BRENOT ,  Derek NESSET ,  Cao SHI

IPC: H01S5/00 ,  H01S5/062 ,  H01S5/02251 ,  H01S5/50

Abstract: A laser system is provided that includes a modulated laser, which is configured to generate an amplitude modulated laser signal, comprising a first amplitude modulation. The first amplitude modulation is based on a data signal. Moreover, the laser system includes an optical modulator, which is configured to receive the amplitude modulated laser signal as an input signal, and modulate the amplitude modulated laser signal with a second amplitude modulation, based on the data signal, resulting in an amplitude modulated output laser signal.

公开(公告)号：US20210104862A1

公开(公告)日：2021-04-08

申请号：US17126716

申请日：2020-12-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun LUO ,  Qian WANG ,  Romain BRENOT

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

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.