We present an overview and generalized analysis through a number of general cases of coupled-wave equations for nonlinear optical guided-wave coupled systems. They are applicable for both symmetric and asymmetric guided-wave coupling structures. An overview of the nonlinear symmetric guided-wave optical coupling systems is given that introduces a generalization of the analysis for nonlinear asymmetric coupling. General cases including those for nonlinear guided modes and power nonorthogonality are considered, and full, power-conserved and nonorthogonal coupled-mode equations (in terms of parameters directly related to the light-wave power contained in the waveguides) are proposed and analytically described. A numerical case study of the nonlinear asymmetric coupling system, which consists of a slab-planar optical waveguide and an optical fiber is described.
© 2001 Optical Society of America
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.2790) Integrated optics : Guided waves
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(230.7390) Optical devices : Waveguides, planar
(230.7400) Optical devices : Waveguides, slab
Le N. Binh and Shu Zheng, "Generalized analysis of nonlinear optical guided-wave coupled systems," J. Opt. Soc. Am. B 18, 1639-1651 (2001)