Ev. Becker et al., All-optical power limiting in waveguides with periodically distributed Kerr-like non-linearity, APP PHYS B, 73(5-6), 2001, pp. 531-534
A slab waveguide with an embedded non-linear grating is considered as an al
l-optical power-limiting device. The limiting action is based on the power
losses at boundaries between grating sections, where a mode-mismatch result
s from the self-focusing of the fundamental mode in each non-linear section
. Time-harmonic and optical pulse propagation are both modelled numerically
by finite-difference techniques to demonstrate the behaviour of the device
.