Deployment method for reconfigurable optical fiber mode demultiplexing and optical fiber communication system

The invention relates to a reconfigurable optical fiber mode demultiplexing deployment method and an optical fiber communication system. The method comprises the following steps: S101, generating a signal; s102, performing multiplexing crosstalk compensation; s103, mode multiplexing is carried out; s104, performing optical fiber transmission; s105, carrying out mode demultiplexing; s106, carrying out demultiplexing crosstalk compensation; and S107, receiving and processing the signal. The mode that static compensation is applied to the sending end and the receiving end is adopted, for any non-ideal mode conversion device, lower inter-module crosstalk can be achieved, low MIMO calculation complexity is kept, and the design and manufacturing difficulty of the mode conversion device is lowered; and meanwhile, the crosstalk compensation matrix can be evaluated instantly and quickly, so that the tolerance of the space division multiplexing communication system to the optical path coupling error ...