Title :
Singularity-corrected spectral index method
Author :
Kovic, A. Vu ; Sewell ; Sujecki, S. ; Benson, T.M. ; Kendall, P.C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Nottingham Univ., UK
fDate :
2/1/1998 12:00:00 AM
Abstract :
The spectral index method (SIM) for analysis of the rib waveguide in air is improved by including the singular behaviour of the principal field component in the vicinity of the reentrant corners, thereby giving the singular SIM (SSIM). This generally improves the value of the modal propagation constant as compared with more exact solutions. The new approach is successfully extended further to the rib waveguide coupler
Keywords :
dielectric waveguides; optical couplers; optical waveguide theory; refractive index; rib waveguides; exact solutions; modal propagation constant; principal field component; reentrant corners; rib waveguide; rib waveguide coupler; singular SIM; singular behaviour; singularity-corrected spectral index method;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:19981719
