OPTICAL COMMUNICATION METHOD AND APPARATUS

摘要

An optical communications method and an optical communications apparatus are provided, where the method is executed on a communications node that includes an input optical modulator array and an output optical modulator array, where the input optical modulator array includes N input optical modulators, where M is greater than the number of output optical modulators that can be covered by one input optical modulator and N is greater than the number of input optical modulators capable of covering a same output optical modulator, and the method includes: determining at least two local input areas from the input optical modulator array, so that each input optical modulator in each local input area is used to receive a foreign signal light; and determining at least two local output areas from the output optical modulator array, where each output optical modulator in each local output area is used to send the foreign signal light, the at least two local input areas correspond to the at least two local output areas in a one-to-one mapping manner, and each input optical modulator in a local input area is capable of transmitting the signal light to each output optical modulator in a corresponding local output area.