| CPC H04B 10/2933 (2013.01) [H04B 10/2537 (2013.01); H04B 10/293 (2013.01); H04B 10/564 (2013.01); H04B 10/672 (2013.01); H04J 14/0221 (2013.01)] | 23 Claims |
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1. A method for determining an optical signal power change, comprising:
obtaining a first optical signal, wherein the first optical signal comprises a plurality of wavelength signals distributed in a plurality of bands, wherein different bands correspond to different wavelength signals, and wherein each band comprises at least one wavelength signal of the plurality of wavelength signals;
detecting an optical power and a center wavelength signal of each band;
obtaining a preset single-wavelength transmit power and a preset coefficient, wherein the preset coefficient is a power change coefficient of the first optical signal in transmission over an optical fiber;
determining an equivalent quantity N of equivalent wavelength signals based on the optical power of each band and the preset single-wavelength transmit power, wherein a total power of the N equivalent wavelength signals is equal to a total power of the first optical signal;
determining an equivalent wavelength signal corresponding to the first optical signal based on the optical power of each band and the center wavelength signal of each band, wherein a difference between a power change value of the N equivalent wavelength signals in transmission over the optical fiber and a first power change value of the first optical signal in the transmission over the optical fiber falls within a preset range; and
determining a target power based on the preset coefficient, the equivalent wavelength signal, the equivalent quantity, and the preset single-wavelength transmit power,
wherein the target power is configured to compensate for the first power change value.
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