Detalhes
Nome
Orlando FrazãoCluster
Redes de Sistemas InteligentesCargo
Responsável de ÁreaDesde
01 junho 1999
Nacionalidade
PortugalCentro
Centro de Fotónica AplicadaContactos
+351220402301
orlando.frazao@inesctec.pt
2022
Autores
Silva, D; Monteiro, CS; Silva, SO; Frazao, O; Pinto, JV; Raposo, M; Ribeiro, PA; Serio, S;
Publicação
PHOTONICS
Abstract
2022
Autores
Rodrigues, AV; Monteiro, C; Silva, SO; Linhares, C; Mendes, H; Tavares, SMO; Frazão, O;
Publicação
U.Porto Journal of Engineering
Abstract
2022
Autores
Cardoso, VHR; Caldas, P; Giraldi, MTR; Fernandes, CS; Frazao, O; Costa, JCWA; Santos, JL;
Publicação
SENSORS
Abstract
2022
Autores
Cardoso, VHR; Caldas, P; Giraldi, MTR; Frazao, O; Costa, JCWA; Santos, JL;
Publicação
SENSORS
Abstract
An optical strain gauge based on a balloon-like interferometer structure formed by a bent standard single-mode fiber combined with a 3D printer piece has been presented and demonstrated, which can be used to measure displacement. The interferometer has a simple and compact size, easy fabrication, low cost, and is repeatable. The sensor is based on the interference between the core and cladding modes. This is caused by the fiber's curvature because when light propagates through the curved balloon-shaped interferometer region, a portion of it will be released from the core limitation and coupled to the cladding. The balloon has an axial displacement as a result of how the artwork was constructed. The sensor head is sandwiched between two cantilevers such that when there is a displacement, the dimension associated with the micro bend is altered. The sensor response as a function of displacement can be determined using wavelength shift or intensity change interrogation techniques. Therefore, this optical strain gauge is a good option for applications where structure displacement needs to be examined. The sensor presents a sensitivity of 55.014 nm for displacement measurements ranging from 0 to 10 mm and a strain sensitivity of 500.13 pm/mu epsilon.
2022
Autores
Robalinho, P; Melo, M; Frazao, O; Ribeiro, ABL;
Publicação
IEEE PHOTONICS TECHNOLOGY LETTERS
Abstract
Teses supervisionadas
2021
Autor
João Miguel Mendes da Silva Maia
Instituição
UP-FCUP
2020
Autor
Liliana Patrícia Santos Soares
Instituição
UP-FEUP
2020
Autor
João Pedro Marques
Instituição
UP-FCUP
2020
Autor
André Rodrigues Delgado Coelho Gomes
Instituição
UP-FCUP
2019
Autor
João Manuel Ribeiro Jordão
Instituição
UP-FCUP
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