Title :
Efficient beam propagation techniques
Author :
Yevick, David ; Hermansson, Björn
Author_Institution :
Dept. of Electr. Eng., Queen´´s Univ., Kingston, Ont., Canada
fDate :
1/1/1990 12:00:00 AM
Abstract :
It is shown that suitable modifications of the free-space-propagation operator in the standard fast-Fourier-transform beam propagation procedure yield a far more rapid code in the context of semiconductor rib waveguide calculations. The procedure curtails the diffraction experienced by the high-order Fourier components of the electric field and mirrors the structure of the recently introduced finite-difference beam propagation algorithm. It is used to investigate the propagation losses of a Y-junction composed of single-mode rib waveguides and illuminated by its normalized guided mode
Keywords :
Fourier transform optics; fast Fourier transforms; light propagation; optical losses; optical waveguide theory; semiconductors; Y-junction; beam propagation techniques; electric field; finite-difference beam propagation algorithm; free-space-propagation operator; high-order Fourier components; normalized guided mode; propagation losses; rapid code; semiconductor rib waveguide calculations; single-mode rib waveguides; standard fast-Fourier-transform beam propagation procedure; Approximation algorithms; Code standards; Computational efficiency; Fast Fourier transforms; Finite element methods; Propagation losses; Refractive index; Semiconductor waveguides; Senior members; Waveguide discontinuities;
Journal_Title :
Quantum Electronics, IEEE Journal of
