Thermal and chemical treatment of polymer optical fiber Bragg grating sensors for enhanced mechanical sensitivity

Pospori, A., Marques, C.A.F., Sáez-Rodríguez, D., Nielsen, K., Bang, O. and Webb, D.J. (2017). Thermal and chemical treatment of polymer optical fiber Bragg grating sensors for enhanced mechanical sensitivity. Optical Fiber Technology, 36 , pp. 68-74.

Abstract

An investigation of the thermal annealing effects on the strain, stress, and force sensitivities of polymer optical fiber Bragg grating sensors is performed. We demonstrate for the first time that the fiber annealing can enhance both stress and force sensitivities of Bragg grating sensors, with the possible cause being the molecular relaxation of the polymer when fiber is raised above the β-transition temperature. A simple, cost-effective, but well controlled method for fiber annealing is also presented in this work. In addition, the effects of chemical etching on the strain, stress, and force sensitivities have been investigated. Results show that fiber etching too can increase the force sensitivity, and it can also affect the strain and stress sensitivities of the Bragg grating sensors.

Publication DOI: https://doi.org/10.1016/j.yofte.2017.02.006
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Additional Information: © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords: annealing,Bragg grating sensors,etching,mechanical sensitivity,POF,Electronic, Optical and Magnetic Materials,Electrical and Electronic Engineering
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2017-07
Authors: Pospori, A.
Marques, C.A.F.
Sáez-Rodríguez, D.
Nielsen, K.
Bang, O.
Webb, D.J. ( 0000-0002-5495-1296)

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