Title :
Advances in the spectral index method for optoelectronic design
Author :
Sewell, P. ; Benson, T.M. ; Vukovic, A. ; Greedy, S. ; Kendall, P.C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Nottingham Univ., UK
Abstract :
The spectral index (SI) approach can be applied for 3D problems. The SI approximation that the small field penetration into the air regions can be modelled by using a slightly larger rib geometry can be carried over to the 3D case. Obviously, this presupposes that any discontinuities primarily scatter into the substrate and not the air regions. A 2D variational boundary condition applied in the plane of the base of the rib when used in conjunction with a suitable decomposition of the field amplitudes on this plane, can be used to solve fully 3D rib circuit problems. The principal advantage of this approach is that it ultimately only requires solution of a small set of linear equations to completely determine the fields in the full structure. The SI method is a valuable analysis tool for the optoelectronics designer
Keywords :
boundary-value problems; integrated optoelectronics; optical design techniques; optical waveguide theory; optical waveguides; rib waveguides; variational techniques; 2D variational boundary condition; 3D problems; SI approximation; analysis tool; discontinuities; field amplitudes; fully 3D rib circuit problems; linear equations; optoelectronic design; optoelectronics designer; rib geometry; small field penetration; spectral index approach; spectral index method; Couplers; Design engineering; Design methodology; Dielectric substrates; Geometrical optics; Geometry; Optical design; Optical design techniques; Optical waveguides; Waveguide theory;
Conference_Titel :
Transparent Optical Networks, 1999. International Conference on
Conference_Location :
Kielce
Print_ISBN :
0-7803-5637-3
DOI :
10.1109/ICTON.1999.781868
