Method for Determining Power Compensation Value of Optical Signal and Related Apparatus

    公开(公告)号:US20230261751A1

    公开(公告)日:2023-08-17

    申请号:US18309178

    申请日:2023-04-28

    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.

    Optical transmission system and optical power control method

    公开(公告)号:US11323199B2

    公开(公告)日:2022-05-03

    申请号:US16589547

    申请日:2019-10-01

    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.

    Fiber amplifier and gain adjustment method for fiber amplifier

    公开(公告)号:US11128384B2

    公开(公告)日:2021-09-21

    申请号:US17014407

    申请日:2020-09-08

    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.

    Optical switching method and apparatus, liquid crystal on silicon, and wavelength selective switch

    公开(公告)号:US12081320B2

    公开(公告)日:2024-09-03

    申请号:US17828662

    申请日:2022-05-31

    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.

    Method for Determining Optical Signal Power Change and Power Calculation Apparatus

    公开(公告)号:US20220255625A1

    公开(公告)日:2022-08-11

    申请号:US17731909

    申请日:2022-04-28

    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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