title: In-plane illuminated metallic annular aperture array for sensing application.
abstract: We propose here an application to sensing of annular aperture arrays (AAA). We theoretically investigate the optical properties of the reflective AAA device when illuminated in-plane. The cavity presents almost perfect absorption due to the waveguide mode resonance with strong field localization in the aperture. Additionally, the reflective cavity is modeled to be available for on-chip sensing with a theoretically expected sensitivity of 764 nm/RIU(refractive index unit).
authors.affiliation: Ecole Polytechnique Fédérale de Lausanne, Institute of Microengineering, Optics & Photonics Technology Laboratory, Neuchâtel, Switzerland. qing.tan@epfl.ch
authors.forename: Qing
authors.initials: Q
authors.lastname: Tan
authors.forename: Matthieu
authors.initials: M
authors.lastname: Roussey
authors.forename: Armando
authors.initials: A
authors.lastname: Cosentino
authors.forename: Hans Peter
authors.initials: HP
authors.lastname: Herzig