We demonstrate a directional coupler that employs two waveguides induced by
two mutually incoherent photorefractive solitons propagating in parallel a
t close proximity. Efficient coupling from one waveguide to the other is ac
hieved for probe beams at wavelengths much longer than that of the solitons
. We study the mutual coupling as a function of distance between solitons.
(C) 1999 Optical Society of America.