13 May 2010 Low index-contrast aperiodically ordered photonic quasicrystals for the development of isotropic photonic band-gap devices
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Abstract
Photonic quasicrystals (PQCs) have neither true periodicity nor translational symmetry, however they can exhibit symmetries that are not achievable by conventional periodic structures. The arbitrarily high rotational symmetry of these materials can be practically exploited to manufacture isotropic band gap materials, which are perfectly suitable for hosting waveguides or cavities. In this work, formation and development of the photonic bandgap (PBG) in twodimensional 8-, 10- and 12-fold symmetry quasicrystalline lattices of low dielectric contrast (0.4-0.6) were measured in the microwave region and compared with the PBG properties of a conventional hexagonal crystal. Band-gap properties were also investigated by changing the direction of propagation of the incident beam inside the crystal. Various angles of incidence from 0° to 30° were used in order to investigate the isotropic nature of the band-gap.
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T. Priya Rose, E. Di Gennaro, A. Andreone, G. Abbate, "Low index-contrast aperiodically ordered photonic quasicrystals for the development of isotropic photonic band-gap devices", Proc. SPIE 7713, Photonic Crystal Materials and Devices IX, 77131W (13 May 2010); doi: 10.1117/12.854712; https://doi.org/10.1117/12.854712
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