Coupled-mode formulation for novel waveguide geometries

Author

Kireev, A.N. ; Graf, Th.

Author_Institution

Inst. of Appl. Phys., Bern Univ., Switzerland

fYear

2003

fDate

22-27 June 2003

Firstpage

645

Abstract

We present a consistent vector formulation of the improved coupled-mode theory (ICMT) based on a new and most general perturbative expansion of the electric field in the complete waveguide of array over known eigenstates of the individual channels in the subspace spanned by the vector fields. It is shown that the effectively scalar TE and TM coupled-mode equations directly follow from full vector coupled-mode theory (VCMT). Errors in the mode splitting of the ICMT and the VCMT approaches, in the case of simple 1D symmetric double-waveguide model widely used for testing different CM theories, are compared.

Keywords

coupled mode analysis; eigenvalues and eigenfunctions; electric fields; errors; geometrical optics; optical arrays; optical waveguide theory; TE coupled-mode equation; TM coupled-mode equation; array waveguide; double-waveguide model; eigenstates; electric field; errors; improved coupled-mode theory; mode splitting; perturbation expansion; vector coupled-mode formulation; waveguide geometry; Dielectrics; Fiber lasers; Geometry; Laser modes; Maxwell equations; Optical arrays; Optical waveguide theory; Optical waveguides; Solid lasers; Waveguide lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on

Print_ISBN

0-7803-7734-6

Type

conf

DOI

10.1109/CLEOE.2003.1313706

Filename

1313706