Optical filter based on a coupled bilayer photonic crystal

Year: 2011

Authors: Stomeo T., Grande M., Rainò G., Passaseo A., D’Orazio A., Marrocco V., Cingolani R., Locatelli A., Modotto D., De Angelis C., De Vittorio M.

Autors Affiliation: National Nanotechnology Laboratory (NNL), CNR-ISTITUTO DI NANOSCIENZE, Dip. Ingegneria dell’Innovazione, Università Del Salento, Via Arnesano, 73100 Lecce, Italy;
Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, Via Re David 200, 70125 Bari, Italy;
Italian Institute of Technology (IIT), Center for Bio-Molecular Nanotechnology, Via Barsanti 1, Arnesano (Lecce) 73010, Italy;
Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Brescia, Via Branze 38, 25123 Brescia, Italy

Abstract: We report on the fabrication of an ultra-compact optical filter based on photonic crystal free-standing membranes in bi-layer configuration. The basic heterostructure consists of two 376 nm-thick GaAs-membranes sandwiched between air on a GaAs substrate. The air gap between the two membranes is 520 nm thick. The normal-incidence reflectance measurements and the numerical simulation of reflection spectra show a high sensitivity to the holes diameter. (C) 2011 Elsevier B.V. All rights reserved.


Volume: 88 (8)      Pages from: 2771  to: 2774

More Information: The authors gratefully thank Dr. Antonio Qualtieri and the expert technical help of Gianmichele Epifani, Iolena Tarantini, Adriana Campa e Gianvito De Iaco. This work was supported by MIUR-PRIN2005, in the framework of the national research project \”Photonic Band Gap Nanosensors\”. This work was supported by Firb – Hub di ricerca italo-giapponese sulle nanotecnologie.
KeyWords: Photonic crystals; Bilayer; Coupled membranes; Optical filter;
DOI: 10.1016/j.mee.2011.01.043

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