PHOTONIC BAND-GAPS IN 2-DIMENSIONAL PHOTONIC QUASI-CRYSTALS

It is generally believed that long range periodic order is instrumenta l in the formation of a photonic band gap, Using a spectral method tha t scales linearly with the system size, we found that sizable spectral gaps for each polarization in 2D can be found in aperiodic arrangemen ts of dielectrics that resemble quasicrystalline tiling. Since the ape riodic arrangement has many inequivalent sites, the defect properties of these systems are more complex and interesting than conventional ph otonic band gap systems. [S0031-9007(97)05157-0].