Title :
Coupled mode formulation for directional couplers with longitudinal perturbation
Author :
Griffel, Giora ; Itzkovich, M. ; Hardy, Amos A.
Author_Institution :
Dept. of Appl. Phys., California Inst. of Technol., Pasadena, CA, USA
fDate :
4/1/1991 12:00:00 AM
Abstract :
A grating-assisted directional coupler is investigated using an improved coupled-mode formulation for multi-waveguide systems with longitudinal perturbation. This approach is capable of handling three-dimensional structures as well as a complex index of refraction and nonisotropic media. The case of two coupled channel waveguides is closely examined, and a numerical analysis is carried out for several cases of slab structures
Keywords :
diffraction gratings; directional couplers; optical couplers; refractive index; complex index of refraction; coupled-mode formulation; grating-assisted directional coupler; longitudinal perturbation; multi-waveguide systems; nonisotropic media; numerical analysis; slab structures; three-dimensional structures; two coupled channel waveguides; Directional couplers; Fabrication; Geometry; Gratings; Numerical analysis; Periodic structures; Physics; Propagation constant; Slabs; Waveguide transitions;
Journal_Title :
Quantum Electronics, IEEE Journal of
