Nn. Akhmediev et al., SOLITON CODING BASED ON SHAPE INVARIANT INTERACTING SOLITON PACKETS -THE 3-SOLITON CASE, Optics communications, 104(4-6), 1994, pp. 385-390
Proposed is the transmission of optical information by soliton coding
based on exact N-soliton solutions of the nonlinear Schrodinger equati
on whose intensity profile yields N pulses that propagate without sign
ificant changes of their relative distance and amplitude. Presented is
an example of a three-soliton sequence that may be generated by phase
coding three equal amplitude solitons and that stably propagates in a
long distance transmission system with bandwidth limited periodic amp
lification.