Title :
Eigenmodes of multiwaveguide structures
Author :
Lenz, Gadi ; Salzman, Joseph
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
fDate :
12/1/1990 12:00:00 AM
Abstract :
Finite periodic structures for multichannel waveguiding are analyzed by self-consistent field matching at the interfaces and matrix formalism for lateral propagation. The characteristic eigenvalue equation for a symmetric system with N coupled slab waveguides is shown to be of the same functional form as that of a single-slab waveguide. The eigenmodes of the system are exactly calculated and compared to the approximate results of coupled mode theory. Basic features of multiwaveguide structures not derivable from the coupled-mode theory (CMT) are uncovered by rigorous formulation and solutions. More complicated structures are solved, and ways of mode shaping and mode filtering are suggested
Keywords :
eigenvalues and eigenfunctions; integrated optics; matrix algebra; optical waveguide theory; coupled slab waveguides; eigenvalue equation; finite periodic waveguiding structures eigenmodes; functional form; interfaces; lateral propagation; matrix formalism; mode filtering; mode shaping; multichannel waveguiding; multiwaveguide structures; self-consistent field matching; symmetric system; Equations; Optical arrays; Optical devices; Optical filters; Optical propagation; Periodic structures; Phased arrays; Propagation constant; Refractive index; Semiconductor laser arrays;
Journal_Title :
Lightwave Technology, Journal of
