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Title: Femtosecond Laser Written Plane-by-Plane Bragg Grating Sensors in Bioresorbable Phosphate Optical Fibres
Authors: Theodosiou, Antreas 
Janner, Davide 
Kalli, Kyriacos 
Boetti, Nadia G. 
Ceci-Ginistrelli, Edoardo 
Pugliese, Diego 
Milanese, Daniel 
Major Field of Science: Engineering and Technology
Field Category: Electrical Engineering - Electronic Engineering - Information Engineering
Keywords: Bioresorbable optical fibre;Biosensors;Femtosecond laser;Fibre Bragg gratings
Issue Date: 15-May-2019
Source: Journal of Lightwave Technology, 2019, vol. 37, no. 10, pp. 2363-2369
Volume: 37
Issue: 10
Start page: 2363
End page: 2369
Journal: Journal of Lightwave Technology 
Abstract: We report on the realization of different types of optical sensors in a bioresorbable phosphate glass optical fiber using a femtosecond laser operating at 517 nm. We inscribed fiber Bragg grating-based optical filters such as uniform Bragg gratings, chirped gratings, and Fabry-Perot cavities, using the plane-by-plane direct write inscription. The gratings were characterized in reflection and tested as sensors for temperature and relative humidity. We studied the stability and resilience of the gratings when inserted in high humidity environments (>95%) for 52 h and observed the evolution of the grating characteristics during this period.
ISSN: 0733-8724
DOI: 10.1109/JLT.2019.2904573
Rights: © IEEE
Type: Article
Affiliation : Politecnico di Torino and RU INSTM 
Fondazione LINKS-Leading Innovation and Knowledge for Society 
Cyprus University of Technology 
Istituto di Fotonica e Nanotecnologie 
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