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Pospori, Andreas
Cyprus University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2023Temperature and RH response of polymer CYTOP FBG treated by gamma radiationcitations
- 2017Thermal and chemical treatment of polymer optical fiber Bragg grating sensors for enhanced mechanical sensitivitycitations
- 2017Polymer optical fiber Bragg grating inscription with a single UV laser pulsecitations
- 2016Microstructured polymer optical fibre sensors for opto-acoustic endoscopycitations
- 2015Fiber-optic liquid level monitoring system using microstructured polymer fiber Bragg grating array sensorscitations
- 2015High performance liquid-level sensor based on mPOFBG for aircraft applications
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article
Thermal and chemical treatment of polymer optical fiber Bragg grating sensors for enhanced mechanical sensitivity
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.