Optical filter based on two coupled PhC GaAs-membranes

Year: 2010

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

Autors Affiliation: National Nanotechnology Laboratory of CNR/INFM, Distretto Tecnologico-ISUFI, Università del Salento, Via Arnesano, 73100 Lecce, Italy; Dipartimento di Elettronica ed Elettrotecnica, Politecnico di Bari, Via Re David 200, 70125 Bari, Italy; Italian Institute of Technology (IIT), Center for Bio-Molecular Nanotechnology, Via Barsanti 1, Arnesano, 73010 Lecce, Italy; Dipartimento di Elettronica per l’Automazione, Università degli Studi di Brescia, Via Branze 38, 25123 Brescia, Italy

Abstract: We demonstrate an ultracompact optical filter based on two coupled high-index contrast GaAs photonic crystal (PhC) membranes. The PhC membranes consist of a square lattice of air holes and behave as a Fabry-Perot cavity whose reflectivity and transmissivity depend on the air gap between the two membranes. The normal-incidence reflectance measurements and the numerical simulation of reflection spectra show a high sensitivity to the geometrical parameters, such as the distance between the slabs, whose control would make the device suitable for a new class of tunable optical filters. (C) 2010 Optical Society of America

Journal/Review: OPTICS LETTERS

Volume: 35 (3)      Pages from: 411  to: 413

More Information: The authors gratefully thank the support of Dr. Antonio Qualtieri and the expert technical help of Gianmichele Epifani. This work was supported by Ministero dell
DOI: 10.1364/OL.35.000411

Citations: 23
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