Title :
Roughness, inhomogeneity, and integrated optics
Author :
Ladouceur, François
Author_Institution :
Opt. Sci. Centre, Australian Nat. Univ., Canberra, ACT, Australia
fDate :
6/1/1997 12:00:00 AM
Abstract :
Surface roughness (and more generally) inhomogeneity is a constraining factor on optoelectronics devices. Its more conspicuous effect is to scatter light thus leading to power attenuation. This effect partly explains the five orders of magnitude difference in attenuation between fibers and integrated waveguides. Less well known is the effect of roughness on back-coupling and mode coupling in devices such as couplers and gratings. I present here an overview of these effect analyzed from a heuristic approach based upon the length scales of the dominant physical mechanism present in such devices
Keywords :
coupled mode analysis; diffraction gratings; integrated optics; light scattering; optical couplers; optical losses; optoelectronic devices; surface topography; back-coupling; couplers; gratings; heuristic approach; inhomogeneity; integrated optics; integrated waveguides; length scales; mode coupling; optoelectronics devices; overview; physical mechanism; power attenuation; scatter light; surface roughness; Integrated optics; Light scattering; Optical attenuators; Optical fiber couplers; Optical fiber devices; Optical scattering; Optical surface waves; Optoelectronic devices; Rough surfaces; Surface roughness;
Journal_Title :
Lightwave Technology, Journal of
