Propagation of pair of fundamental solitons in optical fiber is considered numerically. A new scenario for optical rogue
wave generation is proposed. A dispersion oscillating fiber forces the interaction between fundamental solitons. Couple
of solitons is merged into a single pulse. The intensity of output pulse is twice higher than the same for initial soliton.
The output pulse can be delivered by constant-dispersion single mode fiber. A conversion of two-soliton breather into
single pulse as a new scenario of optical rogue wave generation can be considered.