Abstract

Optical waves of different kinds, particularly waveguide, radiated and leaky modes can exist in anisotropic optical waveguides. It allows to realize in similar waveguides some nonlinear four - wave processes, where several waves of different kinds can take part. Recently the parametric photorefractive interaction of leaky and radiated modes in LiNbO₃:Ti:Fe waveguide was observed, where the holographic gratings with periods depending on the crystal optical anisotropy appeared at the single input light beam [1,2]. It is of great interest to use this effect for formation of holographic dynamic or stationary gratings with arbitrary periods, wich can be used as passive or operating elements in integrated - optical devices. Several results demonstrating such possibility are presented in this report.

© 1993 Optical Society of America