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公开(公告)号：US20210384986A1
公开(公告)日：2021-12-09
申请号：US17407479
申请日：2021-08-20
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanwu WANG , Zhiwen CHANG , Guodong YOU , Zhenqing ZHAO , Fei CHEN
Abstract: Example fiber amplifiers and gain adjustment methods for the fiber amplifiers are described. One example fiber amplifier includes a first power amplifier, a wavelength level adjuster, and a controller, where the first power amplifier is connected to the wavelength level adjuster. The controller includes a first input end and a control output end. The first input end is configured to receive an input optical signal, and the control output end is configured to output a first amplification control signal to the first power amplifier, and output an adjustment control signal to the wavelength level adjuster. The wavelength level adjuster is configured to perform power adjustment on each wavelength in a separate manner based on the adjustment control signal.
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公开(公告)号：US20220181845A1
公开(公告)日：2022-06-09
申请号：US17680851
申请日：2022-02-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhuang ZHAO , Xu SUN , Zhenqing ZHAO , Jinlin ZENG
IPC: H01S5/042 , H01S5/0625
Abstract: A multi-wavelength laser and a wavelength control method are disclosed. The multi-wavelength laser includes a waveguide, a first electrode, and a second electrode. The first electrode and the second electrode are disposed on the waveguide. The first electrode is electrically isolated from the second electrode. The first electrode includes a plurality of sub-electrodes, and every two adjacent sub-electrodes are electrically isolated. The second electrode is configured to amplify an optical signal in the waveguide by loading a current. At least one sub-electrode is configured to adjust a wavelength of the optical signal in the waveguide by loading a current or a voltage.
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公开(公告)号：US20200099455A1
公开(公告)日：2020-03-26
申请号：US16695842
申请日：2019-11-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tianbing SUN , Wei LIU , Zhenqing ZHAO , Mengying HE
Abstract: This application discloses an optical power compensation method and a device, and relate to the communications field. A specific solution comprises: a first node obtains a first optical power and a first timepoint, receives at least two second optical powers sent by a second node, obtains second timepoints corresponding with the at least two second optical powers, where the second timepoint is a timepoint at which the first node receives the second optical power, and determines a target timepoint from the second timepoints according to a preset delay and the first timepoint; the first node determines a variation of a span loss according to a target optical power and the first optical power, where the target optical power is a second optical power corresponding to the target timepoint, and adjusts a gain value and/or an attenuation value of the first node according to the variation of the span loss.
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