Va. Sychugov et al., OPTIMIZATION AND CONTROL OF GRATING COUPLING TO OR FROM A SILICON-BASED OPTICAL WAVE-GUIDE, Optical engineering, 35(11), 1996, pp. 3092-3100
The analysis of a silicon-based step-index waveguide with a corrugatio
n grating at its surface is performed by considering the reflection be
tween the silicon substrate and the optical buffer. The conditions on
the silica buffer thickness for maximum in/out coupling into the subst
rate and into the air are given analytically, and a number of features
of practical interest are described. (C) 1996 Society of Photo-Optica
l instrumentation Engineers.