Andueza Unanua, Ángel MaríaPérez Conde, JesúsSevilla Moróder, Joaquín2022-09-282022-09-282021Andueza, A.; Pérez-Conde, J.; Sevilla, J. (2021). Strain sensing based on resonant states in 2D dielectric photonic quasicrystals Optics Express. 29,5 6980-69901094-408710.1364/OE.416829https://academica-e.unavarra.es/handle/2454/44097This paper reports the numerical and experimental study of the strain sensing effect of bidimensional quasiperiodic structures made with dielectric cylinders. Structures of around 100 cylinders arranged following a Penrose quasiperiodic disposition were simulated, built and measured, in different states of deformation. The selected quasiperiodic structure contains a symmetric decagonal ring resonator that shows two states in its photonic band gap. The frequency of these states varies linearly in opposite directions as the structure is axially deformed, becoming an interesting sensing principle that can be exploited to build optical strain gauges. As a proof of concept, centimeter-scale glass cylinder (εr=4.5) structures were fabricated and their transmission spectra were measured in the microwave range. The same structures were simulated using finite integration time domain showing a good agreement with the measurements. The sensitivity of the prototype built was 12.4 kHz/µε, very linear in a wide range. Therefore, we conclude that the states in the gap of the resonator rings of 2D quasicrystals can find an interesting application in optical strain gauge construction.application/pdfeng© 2021 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.Strain sensing2D quasicrystalsinfo:eu-repo/semantics/article2022-09-28info:eu-repo/semantics/openAccess