Title :
Equipartition method for the analysis of two nonidentical closely separated rib waveguides
Author :
Benson, T.M. ; Kendall, P.C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Nottingham Univ., UK
fDate :
2/1/1993 12:00:00 AM
Abstract :
It is well known that in analysing symmetric directional coupler problems only half of the cross-section need be considered, thereby shortening CPU time and reducing the computer memory needed. This simplicity disappears in the case of important devices such as the asymmetric directional coupler. The paper proposes a new methodology which allows fine-mesh finite difference analysis for the modal indices and field profiles of the two lowest supermodes of such an asymmetric structure
Keywords :
directional couplers; finite difference methods; integrated optics; optical couplers; optical waveguide theory; CPU time; asymmetric directional coupler; computer memory; field profiles; fine-mesh finite difference analysis; lowest supermodes; modal indices; nonidentical closely separated rib waveguides; refractive index;
Journal_Title :
Optoelectronics, IEE Proceedings J
