Chirped polymer optical fiber Bragg grating sensors


We report chirped fiber Bragg gratings (CFBGs) photo-inscribed in undoped PMMA polymer optical fibre (POF) for the first time. The chirped polymer optical fiber Bragg gratings (CPOFBGs) were inscribed using an UV KrF excimer laser operating at 248 nm. The rectangular gauss laser beam was expanded to 25 mm in horizontal direction along the fiber core by a cylindrical lens, giving a total of 25 mm grating length. A 25 mm long chirped phase mask chosen for 1550 nm grating inscription was used. The laser frequency was 1 Hz with an energy of 5 mJ per exposure, exposing few pulses for each grating inscription. The reflection amplitude spectrum evolution of a CPOFBG is investigated as a function of the applied strain and temperature. Also, some results regarding to group delay are collected and discussed. These results pave the way to further developments in different fields, where POFs could present some advantages preferably replacing their silica counterparts.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Carlos A. F. Marques, L. Pereira, P. Antunes, P. Mergo, D. J. Webb, J. L. Pinto, P. André, "Chirped polymer optical fiber Bragg grating sensors", Proc. SPIE 10232, Micro-structured and Specialty Optical Fibres V, 102320N (16 May 2017). Copyright 2017 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DOI
Event Title: SPIE Optics + Optoelectronics
Event Type: Other
Event Dates: 2017-04-24 - 2017-04-27
Uncontrolled Keywords: sensing chirp,fiber Bragg gratings,polymer optical fiber sensors,Electronic, Optical and Magnetic Materials,Condensed Matter Physics,Computer Science Applications,Applied Mathematics,Electrical and Electronic Engineering
ISBN: 978-1-5106-0965-5
Last Modified: 08 Jan 2024 09:53
Date Deposited: 23 Aug 2017 11:15
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2017-05-16
Accepted Date: 2017-05-16
Authors: Marques, Carlos A.F.
Pereira, L.
Antunes, P.
Mergo, P.
Webb, D.J. (ORCID Profile 0000-0002-5495-1296)
Pinto, J.L.
André, P.



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