Title :
Bragg reflection waveguide composite structures
Author :
Lenz, Gadi ; Salzman, Joseph
Author_Institution :
Dept. of Electr. Eng., Technion, Haifa, Israel
fDate :
3/1/1990 12:00:00 AM
Abstract :
The Bragg reflection waveguide directional coupler is analyzed rigorously in terms of the normal modes of the complete structure. A perturbation analysis leading to an explicit expression for the coupling constant in a general configuration with nearly degenerate modes is performed. The results are compared to those for a conventional directional coupler structure. It is shown that the bandlike dispersion diagram arising from the periodic lateral confining media is responsible for the unique features of the coupling constant and coupling length that are observed
Keywords :
directional couplers; light reflection; optical couplers; optical dispersion; optical waveguide theory; perturbation theory; Bragg reflection waveguide composite structures; Bragg reflection waveguide directional coupler; bandlike dispersion diagram; coupling constant; coupling length; nearly degenerate modes; normal modes; periodic lateral confining media; perturbation analysis; Directional couplers; Fabrication; Helium; Integrated optics; Nonhomogeneous media; Optical films; Optical reflection; Optical waveguides; Performance analysis; Periodic structures;
Journal_Title :
Quantum Electronics, IEEE Journal of
