Title :
Multimode coupling of unidentical waveguides
Author :
Shama, Yaacov ; Hardy, Amos A. ; Marom, Emanuel
Author_Institution :
Fac. of Eng., Tel Aviv Univ., Israel
Abstract :
A system of two parallel slab unidentical waveguides, one a multimode structure and the second a single-mode one, is analyzed using an improved coupled-mode theory. The theory is compared with exact numerical solutions of the complete structure. The comparison is carried out for both TE and TM modes, by evaluating the propagation constants and the normal mode distributions. The approximate propagation constants and the corresponding normal modes are shown to agree very well with the exact solutions. The interdependence between the system parameters and the normal mode patterns is discussed.<>
Keywords :
optical couplers; optical waveguide theory; optical waveguides; TE modes; TM modes; approximate propagation constants; multimode coupling; multimode structure; nonidentical waveguides; normal mode distributions; parallel slab unidentical waveguides; propagation constants; single-mode structure; Equations; Optical fiber couplers; Optical fiber devices; Optical fiber polarization; Optical fiber theory; Propagation constant; Slabs; Tellurium; Waveguide components; Waveguide theory;
Journal_Title :
Lightwave Technology, Journal of
