Please use this identifier to cite or link to this item:
|Title:||FPI-POFBG Angular Movement Sensor Inscribed in CYTOP Fibers with Dynamic Angle Compensator||Authors:||Leal-Junior, Arnaldo G.
Díaz, Camilo A. R.
Avellar, Letícia M.
Marques, Carlos Alberto F.
|Major Field of Science:||Engineering and Technology||Field Category:||Electrical Engineering - Electronic Engineering - Information Engineering||Keywords:||Fabry-Perot interferometers;Fiber Bragg gratings;Movement analysis;Polymer optical fiber;Viscoelasticity||Issue Date:||1-Jun-2020||Source:||IEEE Sensors Journal, 2020, vol. 20, no. 11, pp. 5962-5969||Volume:||20||Issue:||11||Start page:||5962||End page:||5969||Journal:||IEEE Sensors Journal||Abstract:||We present the development and application of an angular movement sensor based on Fabry-Perot interferometer (FPI) in series with a fiber Bragg grating (FBG) inscribed in cyclic transparent optical polymer (CYTOP) using a femtosecond laser. The FPI was fabricated with UV-curable resin between the CYTOP and a silica pigtail, which provides flexibility and the possibility in situ fabrication. In this case, the FPI is an edge-filter for the FBG response, which presents both wavelength shift and optical power attenuation as the bending angle increases. A dynamic compensator for the material's viscoelastic response resulted in a six-fold reduction in the sensor's transient response error. The FPI-POFBG angular movement sensor was validated in knee angle monitoring during gait cycles, where the sensor presented errors as low as 2.5°. This is a low-cost sensor with high flexibility on fabrication and with the capacity of following subtle angle variations, as the ones commonly occurred in gait cycles.||URI:||https://ktisis.cut.ac.cy/handle/10488/19329||ISSN:||1558-1748||DOI:||10.1109/JSEN.2020.2974931||Rights:||© IEEE.
Attribution-NonCommercial-NoDerivatives 4.0 International
|Type:||Article||Affiliation :||Federal University of Espírito Santo
Cyprus University of Technology
University of Aveiro
|Appears in Collections:||Άρθρα/Articles|
checked on Jun 7, 2021
WEB OF SCIENCETM
checked on Apr 22, 2021
checked on Jun 13, 2021
This item is licensed under a Creative Commons License