We report on the fabrication and properties of quasi-two-dimensional photonic crystals (Phcs) with honeycomb lattices of dielectric rods in air. Photonic crystals, fabricated in silicon by electron beam lithography and dry-etching techniques, had the high aspect ratio of 12, corresponding to a rod height of about 7 mum. The optical transmission spectra of the samples measured in the 1.8-8 mum wavelength range, revealed pronounced features of photonic band dispersion, and a signature of a complete photonic band gap (PBG) centered at 2.3 mum wavelength. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 13]
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