Nonlinear optical waveguide coupling with planar solitonic field profile
OPTICS COMMUNICATIONS, 221 (1-3):
63-71 (2003)DOI: 10.1016/S0030-4018(03)01365-8
Abstract
The determination of field distribution of an electromagnetic wave
propagating in an optically nonlinear planar waveguide with uniform
Kerr-like medium is considered in principle as a two-dimensional problem
in the transverse plane. The associated two-dimensional Helmholtz
equation is nevertheless reduced to a one-dimensional problems by means
of effective index methods resulting in soliton like spatial
distribution of the electric field along the lateral direction parallel
to the waveguide plane. Taking into account this nonuniform field
distribution in terms of the effective index of the guide, we have
studied semi-analytically the nonlinear coupling behaviors of a
symmetric dual waveguide system. The result shows excellent agreement
with the numerically result obtained by FD-BPM method for planar
structure, exhibiting the desired optically controlled logic functions.
(C) 2003 Elsevier Science B.V. All rights reserved.