A method of self-aligning connections for a two section mast. The network head is charged with transmitting to the remote facilities an alternation of a first portion of an optical carrier, modulated by data to be transmitted according to a chosen bit rate and lasting a first time interval, and of a second portion of this optical carrier, modulated by a clock signal at a base frequency corresponding to the bit rate and lasting a second time interval. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group.