Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/19098
Title: Utilising thermal annealing for multiplexing and sensitivity enhancement of polymer optical fibre sensors
Authors: Pospori, Andreas 
Marques, Carlos Alberto F. 
Sagias, Georgios 
Lamela Rivera, Horacio 
Sáez-Rodríguezd, D. 
Nielsen, Kristian 
Bang, Ole 
Webb, David J. 
Major Field of Science: Engineering and Technology
Field Category: Electrical Engineering - Electronic Engineering - Information Engineering
Keywords: Annealing;Fiber optic sensors;Fibers;Plastic optical fibers;Polymers
Issue Date: 28-Aug-2019
Source: Seventh European Workshop on Optical Fibre Sensors, 2019, 1-4 October, Limassol, Cyprus
Conference: European Workshop on Optical Fibre Sensors 
Abstract: Thermal annealing was initially introduced for multiplexing purposes, since it can induce a permanent negative Bragg wavelength shift for polymer fibre grating sensors. At a later stage, it is shown that annealing can also provide additional benefits, such as strain and humidity sensitivity enhancement and augmented temperature operational range. In this paper, we report additional usage of thermal annealing on PMMA fibre Bragg grating sensors. We show the possibility to tune Bragg wavelengths to longer wavelengths permanently by stretching the polymer optical fibre during the thermal annealing process. An array of sensors fabricated with only one phase-mask, demonstrates the concept by having Bragg wavelengths below and above the original inscribed spectral position. In addition, we report that thermal annealing can be also used to enhance the performance of sensors when used for stress and force monitoring.
URI: https://hdl.handle.net/20.500.14279/19098
ISBN: 978-151063123-6
DOI: 10.1117/12.2541767
Rights: © SPIE
Type: Conference Papers
Affiliation : Cyprus University of Technology 
University of Aveiro 
Universidad Carlos III de Madrid 
Aston University 
DTU Fotonik 
Publication Type: Peer Reviewed
Appears in Collections:Δημοσιεύσεις σε συνέδρια /Conference papers or poster or presentation

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