An antisoliton is a soliton with the negative amplitude of a given soliton.

bright soliton is a pulse like soliton observed in optical fibres. It has high stability and doesn't change during propagation. It is observed in the anomalous dipersion case(which is determined by the sign of dispersion term in NON LINEAR SCHRODINGER EQUATION).

An antikink is a negative 1-soliton solution to the Sine-Gordon equation.

An autosoliton is a dissipative soliton - a wave caused by a non-linear effect, as present in several forms of physical systems.

Marcus Richard Bond has written:

'Synthesis and characterization of some potential soliton-containing systems' -- subject(s): Solitons