Title :
Complex finite-element method applied to the analysis of optical waveguide amplifiers
Author :
Torres, P. ; Guzmán, A.M.
Author_Institution :
Univ. Nacional de Colombia, Bogota, Colombia
fDate :
3/1/1997 12:00:00 AM
Abstract :
A complex finite-element method and a three-level model for erbium ions are applied to obtain gain and propagation constants for erbium-doped waveguide amplifiers (EDWA´s). The complex refractive index profile includes the effect of the dopant polarization induced by the pump field. The method allows to consider arbitrary dopant density profile as well as the modal structure of the pump field. For different waveguide geometries we obtain gain curves as function of pump intensity as well as slight variations in the modal propagation constants. The threshold pump power is shown to be a function of the waveguide geometry, which agrees qualitatively with experimental results,
Keywords :
erbium; finite element analysis; laser modes; light polarisation; optical planar waveguides; optical pumping; optical waveguide components; refractive index; solid lasers; arbitrary dopant density profile; complex finite-element method; complex refractive index profile; dopant polarization; erbium ions; erbium-doped waveguide amplifiers; gain curves; modal propagation constants; modal structure; optical planar waveguide amplifiers; optical waveguide amplifiers; propagation constants; pump field; pump intensity; slight variations; three-level model; threshold pump power; waveguide geometries; Finite element methods; Geometry; Optical pumping; Optical refraction; Optical variables control; Optical waveguides; Particle beam optics; Propagation constant; Semiconductor process modeling; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
