Abstract

Three-wave parametric interactions and especially second harmonic generation (SHG) in dielectric waveguide structures play a significant part in nonlinear integrated optics. They have been discussed extensively in theory, but none of the available considerations takes into account all the complex various factors. Andrews¹ has considered the effects of thin-film crystal symmetry and orientation on the mode interaction without regard for the electric-field distribution, its frequency, and mode-order dependence. Theoretical analyses of SHG in planar optical waveguides have been given by Conwell² and So et al.³ For the purpose of simplification they left aside the anisotropy of dielectric constants, symmetry, and orientation of crystalline film.

© 1986 Optical Society of America