Title :
Spurious modes in the DuFort-Frankel finite-difference beam propagation method
Author :
Masoudi, Husain M. ; Arnold, John M.
Author_Institution :
Dept. of Electr. Eng., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
Abstract :
In this letter, we analyze the DuFort-Frankel beam propagation method (BPM) which is a modification to the known explicit finite-difference beam propagation method (EFD-BPM) and found that there are some precautions that must he taken before using the method. The accuracy and the efficiency of this method has been shown and compared with the most popular FD-BPMs.
Keywords :
finite difference methods; numerical stability; optical waveguide theory; partial differential equations; DuFort-Frankel finite-difference beam propagation method; accuracy; efficiency; numerical method; parabolic equation; spurious modes; symmetric slab waveguide; Equations; Finite difference methods; Minerals; Nonlinear optics; Optical devices; Optical propagation; Optical waveguides; Petroleum; Refractive index; Stability;
Journal_Title :
Photonics Technology Letters, IEEE
