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Title: Femtosecond laser written long period grating in a multimode CYTOP polymer fibre
Authors: Theodosiou, Antreas 
Min, Rui 
Leal, Arnaldo G. 
Ioannou, Andreas 
Frizera-Neto, Anselmo 
José Pontes, Maria 
Marques, Carlos Alberto F. 
Kalli, Kyriacos 
Major Field of Science: Engineering and Technology
Field Category: Electrical Engineering - Electronic Engineering - Information Engineering
Keywords: Femtosecond lasers;Fibre Bragg gratings;Long period gratings;Optical sensors;Polymer sensors
Issue Date: 1-Apr-2020
Source: Micro-Structured and Specialty Optical Fibres VI, 6-10 April 2020, France
Conference: Micro-structured and Specialty Optical Fibres 
Abstract: We report on the inscription of a long period grating (LPG) in a multimode cyclic transparent optical polymer (CYTOP) fibre using the plane-by-plane femtosecond laser inscription method. The LPG was inscribed in the centre of the fibre core and tailored for operation at C-band wavelength range. The CYTOP-LPG sensitivity was characterised in transmission for relative humidity and temperature. The humidity measurements performed are the first for a POF-LPG, whereas the temperature sensitivity is significantly higher than reported in other works. In addition, dynamic mechanical measurements were performed comparing the mechanical characteristics of the laser exposed sections of the polymer fibre, where the LPG was inscribed, with the unexposed regions.
ISBN: 978-151063482-4
DOI: 10.1117/12.2557804
Rights: © SPIE
Type: Conference Papers
Affiliation : Cyprus University of Technology 
Lumoscribe LTD 
Universitat Politècnica de València 
Federal University of Espirito Santo 
University of Aveiro 
Appears in Collections:Δημοσιεύσεις σε συνέδρια /Conference papers or poster or presentation

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