Loss effect on the dynamical evolution of rigid holographic bright spatial solitons in a dissipative system

It has been investigated that the crystal loss effect on the dynamical evolutions of rigid holographic bright solitons in photorefractive dissipative systems based on two-wave mixing. Numerical results show that the stability of rigid holographic bright solitons in such systems depends strongly on the crystal loss. The soliton formed at a given crystal loss can propagate stably in the crystal over a distance that is long enough; the input solitary beam can evolve into a stable soliton and propagate in the crystal when the crystal loss drift is quite small, whereas it will not evolve into a stable soliton and its intensity becomes increase or decrease with propagation distance if the loss difference is big enough. A potential application of these properties of rigid holographic solitons in optical attenuators or repeaters is discussed.