Title :
Effective-index method with built-in perturbation correction for integrated optical waveguides
Author :
Chiang, Kin Seng ; Lo, Kai Ming ; Kwok, Kam Shing
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong
fDate :
2/1/1996 12:00:00 AM
Abstract :
It is well known that the conventional effective-index method for the analysis of rectangular-core waveguides can in general produce accurate results only when the modes of the waveguides are operated in the far-from-cutoff region. In this paper, an improved effective-index method, called the effective-index method with built-in perturbation correction, is described. This method is as efficient as the conventional method pet produces much more accurate results. Numerical examples for single waveguides and directional couplers are presented to demonstrate the accuracy of the method with results obtained from an improved Fourier decomposition method as the references
Keywords :
integrated optics; optical directional couplers; optical waveguide theory; perturbation techniques; rectangular waveguides; refractive index; built-in perturbation correction; effective-index method; far-from-cutoff region; improved Fourier decomposition method; improved effective-index method; integrated optical waveguides; optical directional couplers; rectangular-core waveguides; Cities and towns; Directional couplers; Integrated optics; Optical feedback; Optical refraction; Optical variables control; Optical waveguides; Rectangular waveguides; Refractive index; Slabs;
Journal_Title :
Lightwave Technology, Journal of
