
a 2D slab, together with lattice point tuning and the concept of a photonic double
heterostructure, mean that the realization of a cavity that does not leak is no longer
just a dream.
Introduction of NonLinear and/or Active Functionality
As described above, various advances have been made in 2D photonic crystal slab
structures. All of these have occurred based on the use of material with a constant
refractive index that forms the photonic crystals, the material used being transpar-
ent. As ever, more advanced functionality is demanded, dynamical control of the
photonic crystals becomes important. Great effort is currently being applied to
realize such ...