A. Guo et al., Fixing multiple waveguides induced by photorefractive solitons: directional couplers and beam splitters, OPTICS LETT, 26(16), 2001, pp. 1274-1276
We show how to transform multiple real-time photorefractive solitons into p
ermanent two-dimensional single-mode waveguides. impressed into the crystal
line lattice of the host material. We experimentally demonstrate two specif
ic configurations of such fixed multiple waveguides: directional couplers a
nd multiple beam splitters. (C) 2001 Optical Society of America.