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Title: Compensation Method for Temperature Cross-Sensitivity in Transverse Force Applications with FBG Sensors in POFs
Authors: Leal-Junior, Arnaldo G. 
Theodosiou, Antreas 
Marques, Carlos 
Pontes, Maria José 
Kalli, Kyriacos 
Frizera, Anselmo 
Keywords: Fiber Bragg gratings;Polymer optical fiber;Temperature;Transverse force
Category: Electrical Engineering - Electronic Engineering - Information Engineering
Field: Engineering and Technology
Issue Date: 1-Sep-2018
Publisher: Institute of Electrical and Electronics Engineers Inc.
Source: Journal of Lightwave Technology, 2018, vol. 36, no. 17, pp. 3660-3665
Journal: Journal of Lightwave Technology 
Abstract: In this paper, we investigate the influence of temperature on the transverse force response of polymer optical fiber Bragg gratings (POFBGs) inscribed in cyclic transparent fluoropolymers (CYTOPs). The gratings are imprinted in the fiber using the direct-write, plane-by-plane femtosecond laser inscription method. The temperature increase leads to a decrease in the polymer Young's modulus, which causes a sensitivity variation in the POFBG sensor for transverse force applications. The proposed technique is based on the characterization of both the sensor's response offset and the material's Young's modulus variation due to the temperature increase. Transverse force tests were performed at different temperatures (30 °C, 40 °C, 50 °C, and 60 °C) and the compensated and uncompensated responses are compared in terms of root mean squared error (RMSE). The compensated results show an RMSE lower than 3% (mean value between all tested temperatures), which is 6.7 times lower compared with the uncompensated response. In addition, the proposed compensation technique presents a maximum RMSE reduction of 16 times at 60 °C.
ISSN: 0733-8724
DOI: 10.1109/JLT.2018.2848704
Rights: © 1983-2012 IEEE.
Type: Article
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