ABSTRACT
Photonic crystals (PCs) are a broad class of materials with peculiar diffraction and light-guiding properties that are induced by their
structuring on a length scale comparable to that of the wavelengths
they have to interactwith. The core capability of PCs is the possibility
to fine-tune the dispersion properties of the bulk host dielectric
through a proper micro-/nanostructuring. That is, the spectral
properties of the material can be modified at will over a broad range
of possibilities in order to attain the desired interaction among the
propagating light and the dielectric host material.