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公开(公告)号：US11750292B2
公开(公告)日：2023-09-05
申请号：US17731909
申请日：2022-04-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuanwu Wang , Wei Liu , Fei Chen , Yufeng Su
IPC: H04B10/293 , H04B10/564 , H04J14/02 , H04B10/2537 , H04B10/67
CPC classification number: H04B10/2933 , H04B10/2537 , H04B10/293 , H04B10/564 , H04B10/672 , H04J14/0221
Abstract: A method for determining an optical signal power change, wherein the method includes: A first optical signal that includes a plurality of wavelength signals is obtained, where the plurality of wavelength signals are distributed in a plurality of bands. Then, an optical power of each band and a center wavelength signal of each band are detected, and a preset single-wavelength transmit power and a preset coefficient are obtained. Next, an equivalent quantity N of equivalent wavelength signals is determined, and an equivalent wavelength signal corresponding to the first optical signal is determined. Further, a target power that is used to compensate for a first power change value of the first optical signal in transmission over an optical fiber is determined based on the preset coefficient, the equivalent wavelength signal, the equivalent quantity, and the preset single-wavelength transmit power.
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2.发明公开公开(公告)号：US20230261751A1
公开(公告)日：2023-08-17
申请号：US18309178
申请日：2023-04-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shenghui Liao , Man Li , Yuanwu Wang
IPC: H04B10/293 , H04B10/564
CPC classification number: H04B10/293 , H04B10/564
Abstract: A power calculation method including obtaining a first optical signal and a second optical signal; detecting first optical power of each waveband in the first optical signal and second optical power of each waveband in the second optical signal; calculating, based on the first optical power, a first optical power variation that is of each waveband of the first optical signal and that is used after the first optical signal is transmitted from a transmitting end to a receiving end, and calculating, based on the second optical power, a second optical power variation that is of each waveband of the second optical signal and that is used after the second optical signal is transmitted from the transmitting end to the receiving end; and determining a first compensation value and a second compensation value based on the first optical power variation and the second optical power variation.
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Patent Agency Ranking
公开(公告)号：US11323199B2
公开(公告)日：2022-05-03
申请号：US16589547
申请日：2019-10-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Binlin Deng , Yang Li , Hui Yan , Yuanwu Wang
IPC: H04J14/02 , H04B10/564
Abstract: This application provides a sending device, a receiving device, an optical transmission system, and an optical power control method. The sending device includes a multiplexing unit and an optical power adjustment unit. The multiplexing unit is configured to send at least two communication optical waves to a fiber channel, and is further configured to send or receive at least two detection optical waves through the fiber channel. The optical power adjustment unit is configured to: obtain a power control instruction, where the power control instruction is generated according to power change information between the at least two detection optical waves. The optical power adjustment unit is further configured to perform optical power amplification and/or attenuation on at least one communication optical wave in the at least two communication optical waves according to the power control instruction.
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公开(公告)号：US11128384B2
公开(公告)日：2021-09-21
申请号：US17014407
申请日：2020-09-08
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 and the wavelength level adjuster are sequentially connected. The controller includes a first input end and a control output end. The first input end is configured to receive an input optical signal of the fiber amplifier, 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 based on the adjustment control signal.
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5.发明授权公开(公告)号：US12081320B2
公开(公告)日：2024-09-03
申请号：US17828662
申请日：2022-05-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Hangting Hu , Yuanwu Wang , Shengqian Zhong
CPC classification number: H04J14/0212 , H04Q11/0005
Abstract: This application provides example optical switching methods and example apparatuses. One example method includes generating K images that are consecutive in time sequence, where a first wavelength channel and at least one second wavelength channel are switched to a blocking state through a same image in the K images, and a value of K depends on a quantity of times that attenuation adjustment is performed for switching the first wavelength channel from a normal state to the blocking state. Information about the K images can then be sent to an optical switching element to enable the optical switching element to perform attenuation adjustment on the first wavelength channel and the at least one second wavelength channel.
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公开(公告)号：US11671179B2
公开(公告)日：2023-06-06
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
CPC classification number: H04B10/673 , H01S3/06754 , H01S3/10069 , H01S3/2316 , H04B10/25 , H04J14/0221
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：US20220255625A1
公开(公告)日：2022-08-11
申请号：US17731909
申请日：2022-04-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuanwu Wang , Wei Liu , Fei Chen , Yufeng Su
IPC: H04B10/293 , H04B10/67 , H04B10/2537
Abstract: A method for determining an optical signal power change, wherein the method includes: A first optical signal that includes a plurality of wavelength signals is obtained, where the plurality of wavelength signals are distributed in a plurality of bands. Then, an optical power of each band and a center wavelength signal of each band are detected, and a preset single-wavelength transmit power and a preset coefficient are obtained. Next, an equivalent quantity N of equivalent wavelength signals is determined, and an equivalent wavelength signal corresponding to the first optical signal is determined. Further, a target power that is used to compensate for a first power change value of the first optical signal in transmission over an optical fiber is determined based on the preset coefficient, the equivalent wavelength signal, the equivalent quantity, and the preset single-wavelength transmit power.
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