Polymers 2018, 10(6), 674; https://doi.org/10.3390/polym10060674
Polymer Optical Fiber Bragg Gratings in CYTOP Fibers for Angle Measurement with Dynamic Compensation
Arnaldo Leal-Junior 1,*
, Antreas Theodosiou 2, Camilo Díaz 1, Carlos Marques 3, Maria José Pontes 1, Kyriacos Kalli 2 and Anselmo Frizera-Neto 1
, Antreas Theodosiou 2, Camilo Díaz 1, Carlos Marques 3, Maria José Pontes 1, Kyriacos Kalli 2 and Anselmo Frizera-Neto 1
1
Graduate Program of Electrical Engineering of Federal University of Espirito Santo, 29075-910 Vitória, Brazil
2
Photonics and Optical Sensing Research Laboratory, Cyprus University of Technology, Limassol 3036, Cyprus
3
Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
*
Author to whom correspondence should be addressed.
Received: 16 May 2018 / Revised: 7 June 2018 / Accepted: 15 June 2018 / Published: 17 June 2018
(This article belongs to the Special Issue Holographic Materials and Photonic Applications)
Abstract
This paper demonstrates the use of polymer optical fiber Bragg gratings (POFBGs) for angle measurements over a range of different oscillatory frequencies. The POFBGs are inscribed in low-loss, cyclic transparent amorphous fluoropolymers (CYTOP) and are imprinted using the direct-write, plane-by-plane femtosecond laser inscription method. As the polymer has a viscoelastic response and given that the Young’s modulus depends on the oscillatory frequency, a compensation technique for sensor frequency cross-sensitivity and hysteresis is proposed and verified. Results show that the proposed compensation technique is able to provide a root mean squared error (RMSE) reduction of 44%, and a RMSE as low as 2.20° was obtained when compared with a reference potentiometer. The hysteresis reduction provided by the proposed technique is 55%, with hysteresis <0.01. The results presented in this paper can pave the way for movement analysis with POFBG providing higher sensitivity and low hysteresis over a large range of motion frequencies. View Full-TextKeywords:
polymer optical fiber; fiber Bragg gratings; CYTOP; curvature sensor; hysteresis
▼
Figures
Graphical abstract
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
Share & Cite This Article
MDPI and ACS Style
Leal-Junior, A.; Theodosiou, A.; Díaz, C.; Marques, C.; Pontes, M.J.; Kalli, K.; Frizera-Neto, A. Polymer Optical Fiber Bragg Gratings in CYTOP Fibers for Angle Measurement with Dynamic Compensation. Polymers 2018, 10, 674.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
Related Articles
Article Metrics
Comments
[Return to top]
Polymers
EISSN 2073-4360
Published by MDPI AG, Basel, Switzerland
RSS
E-Mail Table of Contents Alert