Title :
Slow-wave finite-difference beam propagation method
Author :
Liu, Pao-Lo ; Zhao, Qida ; Choa, Fow-Sen
Author_Institution :
Dept. of Electr. & Comput. Eng., State Univ. of New York, Buffalo, NY, USA
Abstract :
By invoking the slow-wave approximation, the wave equation resumes the form of the Fresnel equation. Codes developed previously for the paraxial beam propagation can be extended to simulate the backward reflection and diffraction at any angle. Results of planar waveguide gratings and a beveled corner bend are presented.<>
Keywords :
diffraction gratings; finite difference methods; optical planar waveguides; optical waveguide components; slow wave structures; Fresnel equation; backward diffraction; backward reflection; beveled corner bend; finite-difference beam propagation method; paraxial beam propagation; planar waveguide gratings; slow-wave approximation; wave equation; Diffraction; Finite difference methods; Gratings; Optical beams; Optical planar waveguides; Optical reflection; Optical waveguides; Partial differential equations; Planar waveguides; Time domain analysis;
Journal_Title :
Photonics Technology Letters, IEEE
