Abstract
A comprehensively study of coherently coupled bright-bright spatial soliton pair co-propagating in biased centro-symmetric photorefractive crystals is investigated. It is shown that coherently coupled bright-bright spatial soliton pairs can be supported in steady-state regime under appropriate conditions. Moreover, the effects of three physical factors, i.e., the intensity ratio and the initial phase difference between two incident coherent beams, and various external bias field on the existence conditions, properties and self-deflection process of such bright-bright soliton pair have been discussed in detail. Finally, the evolution equations, analytic solutions, and the displacements of self-deflection of coherently coupled bright-bright soliton pair in the low-amplitude regime are also presented.
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