Title :
Large single-mode rib waveguides in GeSi-Si and Si-on-SiO2
Author :
Soref, Richard A. ; Schmidtchen, Joachim ; Petermann, Klaus
Author_Institution :
Rome Lab., Hanscom AFB, MA, USA
fDate :
8/1/1991 12:00:00 AM
Abstract :
Mode-matching and beam-propagation methods are used to analyze single-mode operation of optical GeSi-Si and Si-SiO2 semiconductor rib waveguides. The waveguide dimensions that allow only the fundamental HE00 or EH00 mode to propagate have been determined. For both material systems, it is found that the rib can be several microns wide and several microns high, thus allowing efficient coupling to single-mode fibers. Numerical examples are given for monomode guiding group-IV materials, but the results apply to III-V rib waveguides. It is shown that single-mode rib guides with large cross sections are feasible as long as the waveguide is at least several millimeters long
Keywords :
germanium compounds; integrated optics; optical waveguide theory; silicon; silicon compounds; EH00 mode; GeSi-Si; HE00 modes; III-V rib waveguides; Si-SiO2; beam-propagation methods; fibre coupling; large cross sections; material systems; mode matching; monomode guiding group-IV materials; optical planar waveguides; semiconductor rib waveguides; single-mode fibers; single-mode operation; single-mode rib waveguides; waveguide dimensions; Helium; Optical propagation; Optical refraction; Optical variables control; Optical waveguides; Polarization; Ribs; Semiconductor materials; Semiconductor waveguides; Slabs;
Journal_Title :
Quantum Electronics, IEEE Journal of
