Title :
Numerical analysis of the radiation losses due to surface roughness in integrated optics devices
Author :
Jin, G.H. ; Harari, J. ; Joannes, L. ; Vilcot, J.P. ; Decoster, D.
Author_Institution :
Inst. Electron. et Microelectron. du Nord., Villeneuve d´´Ascq, France
Abstract :
A numerical model of the surface roughness is simply implemented into the beam propagation method to estimate the radiation losses in integrated optics devices. In this model, the deviation variables of the surface stem from a random generation controlled by the distribution function, and the spacing of deviations on the surface is determined considering their correlation length. The radiation losses due to surface roughness for a planar waveguide are estimated through this model using the FD-BPM scheme and are favorably compared with the ones obtained by another method reported in literature. For a 45/spl deg/ self-aligned integrated mirror made on a dielectric waveguide, the calculated radiation losses agree well with the measured ones.
Keywords :
finite difference methods; mirrors; numerical analysis; optical correlation; optical losses; optical planar waveguides; optical waveguide theory; surface topography; FD-BPM scheme; beam propagation method; calculated radiation losses; correlation length; deviation variables; dielectric waveguide; distribution function; integrated optics devices; numerical analysis; numerical model; planar waveguide; radiation losses; random generation control; self-aligned integrated mirror; surface roughness; Dielectric loss measurement; Integrated optics; Numerical analysis; Numerical models; Optical losses; Optical propagation; Optical surface waves; Optical waveguides; Rough surfaces; Surface roughness;
Journal_Title :
Photonics Technology Letters, IEEE
