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dc.contributor.authorCardador Maza, David
dc.contributor.authorSegura García, Daniel
dc.contributor.authorRodríguez Martínez, Ángel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.identifier.citationCardador, D., Segura, D., Rodriguez, A. Photonic molecules for improving the optical response of macroporous silicon photonic crystals for gas sensing purposes. "Optics express", 19 Febrer 2018, vol. 26, p. 4621-4630.
dc.description.abstractIn this paper, we report the benefits of working with photonic molecules in macroporous silicon photonic crystals. In particular, we theoretically and experimentally demonstrate that the optical properties of a resonant peak produced by a single photonic atom of 2.6 µm wide can be sequentially improved if a second and a third cavity of the same length are introduced in the structure. As a consequence of that, the base of the peak is reduced from 500 nm to 100 nm, while its amplitude remains constant, increasing its Q-factor from its initial value of 25 up to 175. In addition, the bandgap is enlarged almost twice and the noise within it is mostly eliminated. In this study we also provide a way of reducing the amplitude of one or two peaks, depending whether we are in the two- or three-cavity case, by modifying the length of the involved photonic molecules so that the remainder can be used to measure gas by spectroscopic methods.
dc.format.extent10 p.
dc.rightsAn error occurred on the license name.
dc.subjectÀrees temàtiques de la UPC::Energies::Energia solar fotovoltaica
dc.subjectÀrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors
dc.subject.lcshSilicon crystals
dc.subject.lcshGas detectors
dc.titlePhotonic molecules for improving the optical response of macroporous silicon photonic crystals for gas sensing purposes
dc.subject.lemacCristalls de silici
dc.subject.lemacSensors químics
dc.subject.lemacDetectors de gasos
dc.subject.lemacCristalls fotònics
dc.contributor.groupUniversitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorCardador, D.; Segura, D.; Rodriguez, A.
local.citation.publicationNameOptics express

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