Novel nanophotonic waveguides based on metal, semiconductor or soft glass modified photonic crystal fibres

Here we review on our results of photonic crystal fibres (PCFs) which have been filled with solid materials such as metals, semiconductors and low-melting temperature compound glasses. As filling method we used the high-temperature pressure cell technique. Depending on the material in the air-holes, we observed the excitation of spiralling plasmonic modes, Mie-resonances and coupled waveguide modes. The filling of the air-holes is thus a novel concept to manipulate the optical properties of PCFs in a desired way and to create novel in-fibre and waveguiding devices.