- Superlattice for photonic band gap opening in monolayers of dielectric spheres doi link

Auteur(s): Vynck Kevin, Cassagne D., Centeno Emmanuel

(Article) Publié: Optics Express, vol. 14 p.6668-6674 (2006)

Ref HAL: hal-00437955_v1
PMID 19516847
DOI: 10.1364/OE.14.006668
WoS: 000239342300010
Exporter : BibTex | endNote
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Dielectric spheres synthesized for the fabrication of self-organized photonic crystals such as opals offer large opportunities for the design of novel nanophotonic devices. In this paper, we show that a hexagonal superlattice monolayer of dielectric spheres exhibits an even photonic band gap below the light cone for refractive indices higher than 1.93. The use of spheres with refractive index 2.9 and diameter 0.33 mu m tunes the photonic band gap to the telecommunications range (lambda= 1.55 mu m). As a practical example for the use of such a photonic band gap, we demonstrate the possibility of waveguiding light linearly through the monolayer. (c) 2006 Optical Society of America.