Optical signal amplification apparatus and method

An optical signal amplification method comprising:

• separately detecting, for each of a plurality of N spatial dimensions, power of each of a plurality of G wavelength channels to obtain power detection information;
• generating, in a space-division multiplexed (SDM) transmission system, an SDM signal comprising the plurality of N spatial dimensions, wherein each spatial dimension comprises the plurality of G wavelength channels, wherein N is a positive integer, and wherein G is a positive integer;
• determining power configuration information based on the power detection information;
• outputting N channels of pump light, wherein each of the N channels includes M pieces of split pump light of different wavelengths, and wherein a proportion of each of the M pieces is based on the power configuration information;
• adjusting, for each of the N spatial dimensions, the proportions of the M pieces of split pump light based on the power configuration information;
• and
• performing Raman amplification on the SDM signal in all of the N spatial dimensions using the N channels of pump light.

A non-transitory computer-readable storage medium comprising computer-executable instructions that, when executed by a processor, cause an apparatus to:

• separately detect, for each of a plurality of N spatial dimensions, power of each of a plurality of G wavelength channels to obtain power detection information;
• generate, in a space-division multiplexing (SDM) transmission system, an SDM signal comprising the plurality of N spatial dimensions, wherein each spatial dimension comprises the plurality of G wavelength channels, wherein N is a positive integer, and wherein G is a positive integer;
• determine power configuration information based on the power detection information;
• output N channels of pump light, wherein each of the N channels includes M pieces of split pump light of different wavelengths, and wherein a proportion of each of the M pieces is based on the power configuration information;
• adjust, for each of the N spatial dimensions, the proportions of the M pieces of split pump light based on the power configuration information;
• and
• perform Raman amplification on the SDM signal in all of the N spatial dimensions using the N channels of pump light.