Optical Fiber Anemometer Based on a Multi-FBG Curvature Sensor

Autor(es)

Fujiwara, Eric ; Hayashi, Juliano G. ; Delfino, Tiago da Silva ; Jorge, Pedro A. S. ; de Barros Cordeiro, Cristiano Monteiro

• Tipo de documento: Artigo Científico
• Fonte: IEEE SENSORS JOURNAL; v. 19, n. 19, p. 6-pg., 2019-10-01.

Resumo

An optical fiber anemometer based on a flexible multi-FBG curvature sensor is reported. The probe is comprised of a structured polymer shell with embedded single-mode fibers with written fiber Bragg gratings. When the sensor is bent, the different spectral shift of the Bragg wavelengths allows the determination of the mechanical stimulus. Moreover, the probe was also used as a cantilever sensor for assessing the airflow speed in a wind tunnel. The sensor presented sensitivities of 0.8 nm/m(-1) and 1.05 pm/(m/s) for curvature and square speed measurements, respectively, and the sensing characteristics can be improved by simply changing the material and the geometry of the bulk polymer shell, providing a versatile and feasible probe for the mechanical and flow measurements. (AU)

• Processo FAPESP: 17/25666-2 - Desenvolvimento de sensor de fibra óptica para medição de sinais de miografia de força aplicado a interfaces humano-robô
• Beneficiário: Eric Fujiwara
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/50632-6 - Sensores baseados em ressonância de plasmon e fibras ópticas microestruturadas
• Beneficiário: Cristiano Monteiro de Barros Cordeiro
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 16/25196-3 - Sensores baseados em fibras ópticas e plataforma Arduino
• Beneficiário: Tiago da Silva Delfino
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica