We predict new phenomena, such as soliton steering and soliton fission, in optical lattices that fade away exponentially along the propagation direction. Such lattices, featuring tunable decay rates, arise in photorefractive crystals in the wavelength range 360–400¿nm. We show that the predicted phenomena offer different opportunities for soliton control.
Kartashov, Y.V., Vysloukh, V.A., Torner, L. Soliton control in fading optical lattices. "Optics letters", Juny 2006, vol. 31, núm. 14, p. 2181-2183.