Title :
Wide angle oblique beam propagation
Author :
Sujecki, S. ; Sewell, P. ; Benson, T.M.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nottingham Univ., UK
fDate :
29 June-3 July 2003
Abstract :
The properties of wide-angle beam propagation in oblique coordinate system are studied. The wide angle algorithm is compared with the standard paraxial one and with the beam propagation in the rectangular coordinate system. The results obtained by the new algorithm are consistent with the ones given by the standard rectangular Beam Propagation Method. It is found that when the local waveguide geometry does not match the local coordinate system used to describe it the wide-angle algorithm is sensitive to staircasing.
Keywords :
finite difference methods; integrated optics; light propagation; optical design techniques; optical engineering computing; optical waveguide theory; physics computing; refractive index; design tools; finite difference formulations; local waveguide geometry; oblique coordinate system; obliquely oriented waveguides; overlap integral; photonic integrated components; refractive index; staircasing; standard rectangular beam propagation method; wide angle algorithm; wide-angle beam propagation; Design optimization; Equations; Geometrical optics; Integrated circuit technology; Integrated optics; Optical propagation; Optical waveguides; Photonic integrated circuits; Sparse matrices; Transmission line matrix methods;
Conference_Titel :
Transparent Optical Networks, 2003. Proceedings of 2003 5th International Conference on
Print_ISBN :
0-7803-7816-4
DOI :
10.1109/ICTON.2003.1263137
