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The physics and technology of sub-wavelength structured optical materials such as photonic crystals, patterned metallic films and, more generally, artificial optical materials, such as metamaterials (i.e. structured materials with new characteristics obtained by combining materials properties and geometrical patterning), offer novel phenomena and applications over and above classical integrated optics...
The talk discusses the challenges in sub-wavelength photonics, and it reports on the research agenda of a starting European project COST Action MP0702: towards functional sub-wavelength photonic structures.
University of Nottingham (UoN) and National Institute of Telecommunications (NIT) in Warsaw have a well established cooperation in the field of the numerical methods for the modelling of the photonic structures in the framework of COST Pll project. Both research groups are using frequency domain Finite-Difference Beam Propagation Method (FD-BPM) for the calculations. The algorithm developed at the...
The gain enhancement in a layered periodic photonic band gap structure containing active medium based on GaAs n-i-p-i superlattices separated by A1GaAs layers is analyzed. The dependences of extinction coefficient and refractive index on excitation level and wavelength are presented. Transmission characteristics of a probe light versus excitation level are calculated. It is shown that the threshold...
We propose a review of word science achievements in the extremely extended for the recent few years field of photonic band gap structures The review concerns both theoretical and experimental investigations on PBG structures toward fabrication of the most optimal ones for different applications. The attention is given to the obtained results as well as to the used and developed methods.
Optical range electromagnetic field interaction with inhomogeneous finite dielectric media is investigated. New method for analysis of this interaction in 1D case based on integral equations for fields in transient media is proposed. Some special cases of quasi-periodical structures with doubled quasi-periodicity are investigated numerically. A possibility to obtain good filtering properties in such...
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