  We present the explicit dark-bright three soliton solution and the associated
spectral problem for the variable coefficient integrable coupled NLS equation.
Using asymptotic analysis as well as graphical analysis we study the
interactions in soliton complexes. We present a correlation between the soliton
parameters and the interaction pattern in three soliton complexes. Using
asymptotic analysis, we present a few interesting features of complex three
soliton bound state and interaction of dark-bright two soliton complex with a
regular soliton. Using three soliton interactions we have shown that the energy
sharing take place between soliton even when the soliton do not collide with
each other. The results found by us might be useful for the development of
soliton control, all optical gates as well as all optical switching devices. We
hope that the analysis of three soliton complexes would be useful for a better
understanding of soliton interactions in nonlinear fiber as well as in a bulk
medium.
