Optical solitons in some deformed MB and NLS-MB equations

In this Letter, we present the one- and two-soliton solutions for the nonlinear optical equations like Maxwell-Bloch and nonlinear Schrödinger-Bloch equation with pumping, by using auto Bäcklund transformation technique. These are the systems wherein we consider the variable spectral parameter. We also analyze the in-phase and off-phase two-soliton interaction for these systems and the results are discussed in detail.