Optical Fiber Anemometer Based on a Multi-FBG Curvature Sensor

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Fujiwara, E (Author) Other; Hayashi, JG (Author) Other; Delfino, TD (Author) Other; Jorge, PAS (Author) FCUP; de Barros Cordeiro, CMD (Author) Other

Journal

Title: IEEE Sensors Journal

Vol. 19

Pages: 8727-8732

ISSN: 1530-437X

Publisher: IEEE

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 10 Citations

Other information

Authenticus ID: P-00R-23Y

DOI: 10.1109/jsen.2019.2923046

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6