Tunable optical properties of silicon-on-insulator photonic crystal slab structures

Tasolamprou, Anna and Bellini , Bob and Zografopoulos, Dimitrios C. and Kriezis, Emmanouil E. and Beccherelli, Romeo (2009) Tunable optical properties of silicon-on-insulator photonic crystal slab structures. Journal of the European Optical Society-Rapid Publications, 4. pp. 1-6. ISSN 1990-2573

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A photonic crystal slab structure with one-dimensional periodicity, obtained by preferential etching of a silicon-on-insulator wafer, is numerically investigated in 3-D. The etched grooves are considered to be filled either with an isotropic or with a Nematic Liquid Crystal (NLC) material. The molecular director is calculated using a consistent model of NLC reorientation under an external voltage. Different structures together with a broad range of voltage values are numerically simulated by means of a three-dimensional finite-difference timedomain method. The shifting of the photonic bandgap induced by the applied voltage, as well as its sensitivity in terms of refractometric applications, are discussed for a range of different structure geometries.

Item Type: Article
Subjects: 600 Tecnologia - Scienze applicate > 620 Ingegneria e attivita' affini
Depositing User: Matteo Viola
Date Deposited: 02 Jan 2013 14:26
Last Modified: 21 Mar 2013 15:02
URI: http://eprints.bice.rm.cnr.it/id/eprint/4460

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