Title :
Propagation and coupling properties of integrated optical waveguides-an integral equation formulation
Author :
Polychronopoulos, Spyridon J. ; Uzunoglu, Nikolaos K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece
fDate :
5/1/1996 12:00:00 AM
Abstract :
The propagation and coupling properties of integrated optical waveguides are analyzed by means of the electric field integral equation approach. The kernel of the integral equation is the Green´s function of a two-layered medium. The Galerkin´s method is then employed to solve the integral equation numerically. The set of basis and test functions consists of entire domain plane wave functions. Fast convergence and superior accuracy are the advantages of the chosen set of basis and test functions. The method is used to compute the propagation and coupling properties of several structures. Very good agreement is observed with previously published results. Field distributions of several coupled mode structures, such as the symmetrical and asymmetrical coupler are also investigated and presented. Finally, the same method is used to produce the field distribution of waveguides having more complex cross section like the trapezoidal waveguide
Keywords :
Galerkin method; Green´s function methods; coupled mode analysis; integral equations; integrated optics; optical couplers; optical waveguide theory; Galerkin method; Green function; asymmetrical coupler; convergence; coupled mode structures; coupling properties; electric field integral equation; field distribution; integrated optical waveguides; plane waves; propagation properties; symmetrical coupler; trapezoidal waveguide; two-layered medium; Green´s function methods; Integral equations; Integrated optics; Kernel; Moment methods; Optical coupling; Optical propagation; Optical waveguides; Testing; Wave functions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
