Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 4, 2009
|
|
---|---|---|
Article Number | 09017 | |
Number of page(s) | 6 | |
DOI | https://doi.org/10.2971/jeos.2009.09017 | |
Published online | 13 April 2009 |
Regular papers
Tunable optical properties of silicon-on-insulator photonic crystal slab structures
1
Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece
2
Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e Microsistemi (CNR-IMM), via del fosso del cavaliere 100, 00133, Rome, Italy
* atasolam@auth.gr
** romeo.beccherelli@artov.imm.cnr.it
Received:
9
March
2009
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 time-domain 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.
Key words: photonic crystals / liquid crystals / silicon-on-insulator
© The Author(s) 2009. All rights reserved.
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