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Sobre

Sobre

Susana Silva é licenciada em Física Aplicada pela Universidade do Porto, Portugal. S. Silva recebeu o Doutoramento em Física pela Universidade do Porto, Portugal, na área dos sensores em fibra ótica para índice de refração e deteção de gás. Atualmente, S. Silva é Investigadora Contratada I&D no Centro de Fotónica Aplicada do INESC TEC. Nos últimos anos, S. Silva publicou mais de 50 artigos em revistas internacionais. S. Silva recebeu o prémio de melhor Tese de Doutoramento em Ótica e Fotónica em 2013. S. Silva é especializada na fabricação de sensores em fibra ótica para monitorização de parâmetros físicos. Os seus atuais interesses de investigação são os sensores óticos para aplicações biomédicas e sensorização distribuída em fibra ótica para aplicações em biodiversidade.

Tópicos
de interesse
Detalhes

Detalhes

001
Publicações

2019

High sensitivity strain sensor based on twin hollow microspheres

Autores
Monteiro, CS; Kobelke, J; Schuster, K; Bierlich, J; Silva, SO; Frazao, O;

Publicação
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS

Abstract
A sensor based on 2 hollow core microspheres is proposed. Each microsphere was produced separately through fusion splicing and then joined. The resultant structure is a Fabry-Perot interferometer with multiple interferences that can be approximated to a 4-wave interferometer. Strain characterization was attained for a maximum of 1350 mu epsilon, achieving a linear response with a sensitivity of 3.39 +/- 0.04 pm/mu epsilon. The fabrication technique, fast and with no chemical hazards, as opposed to other fabrication techniques, makes the proposed sensor a compelling solution for strain measurements in hash environments.

2019

Bi-core optical fiber for sensing o temperature, strain and torsion

Autores
Lobo Ribeiro, ABL; Silva, SFO; Frazao, O; Santos, JL;

Publicação
MEASUREMENT SCIENCE AND TECHNOLOGY

Abstract
Bi-core optical fiber structures are studied for applications in sensing. In this paper, an analysis is performed on the spectral characteristics of light propagating in these fibers with central launching core illumination from a standard single mode fiber. Reflective and transmissive configurations are addressed. The characteristics of a reflective bi-core fiber structure for measurement of strain, temperature and absolute value of torsion are investigated and highlights for further research are presented.

2019

A Self-Referencing Intensity-Based Fabry–Perot Cavity for Curvature Measurement

Autores
Novais, S; Silva, SO; Frazao, O;

Publicação
IEEE Sensors Letters

Abstract

2019

Fabry-Perot cavity for curvature measurement in a medical needle

Autores
Novais, S; Silva, SO; Frazão, O;

Publicação
Proceedings of SPIE - The International Society for Optical Engineering

Abstract
A reflective fiber optic sensor based on a Fabry-Perot cavity made by splicing two sections of multimode fiber is demonstrated to measure the needle curvature. The sensing structure was incorporated into a medical needle and characterized for curvature and temperature measurements. The maximum sensitivity of-0.152dB/m-1 was obtained to the curvature measurements, with a resolution of 0.089m-1. When subjected to temperature, the sensing head presented a low temperature sensitivity, which resulted in a small cross-sensitivity. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

2018

Analysis of amplification in a fiber ring resonator with a fabry-perot cavity

Autores
Magalhaes, R; Silva, S; Frazao, O;

Publicação
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS

Abstract
The placement of an Erbium-doped Fiber Amplifier and a Fabry-Perot cavity inside a fiber ring resonator can generate a sinusoidal modulation in the optical signal obtained. The characterization of this behavior is achieved by changing the length of the Fabry-Perot cavity, which acts as a sensing device. A theoretical model of the optical signal modulation obtained with such configuration is also presented.