Impact of thermal pre-treatment on preforms for fast Bragg gratings inscription using undoped PMMA POFs


In this work, improvements in the photosensitivity of undoped POFs, where there was a welldefined pre-annealing of both preforms in two-step process, were reported. We have noticed that when the primary and secondary preforms are annealed, the fiber photosensitivity is higher; otherwise, if any preform (primary or secondary) is not annealed, the fiber photosensitivity is lower. Two PMMA mPOFs are used where the primary and secondary preforms, during the two-step drawing process, have a different thermal treatment. The PMMA POFs drawn where the primary or secondary preform is not specifically pre-treat need longer inscription time than the fibres drawn where both preforms have been pre-annealed at 80°C for 2 weeks. Using two different UV lasers, for the latter fibre much less inscription time is needed compared to another homemade POF. The properties of a POF fabricated where there are both preform process with thermal treatment is different from those where just one preform step process is thermal treated, as previously shown in the literature, where these POFs are much less sensitive to thermal treatment. Some important parameters were considered such as drawing tension and water content, where using fibers drawn in different tensions give us a similar FBG inscription time.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Carlos A. F. Marques, Andreas Pospori, Pawel Mergo, Paulo André, David J. Webb, "Impact of thermal pre-treatment on preforms for fast Bragg gratings inscription using undoped PMMA POFs", Proc. SPIE 10232, Micro-structured and Specialty Optical Fibres V, 102320A (2017/05/16). 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: Micro-Structured and Specialty Optical Fibres V
Event Type: Other
Event Dates: 2017-04-26 - 2017-04-27
Uncontrolled Keywords: Electronic, Optical and Magnetic Materials,Condensed Matter Physics,Computer Science Applications,Applied Mathematics,Electrical and Electronic Engineering
ISBN: 9781510609655
Last Modified: 05 Feb 2024 08:04
Date Deposited: 07 Sep 2017 13:00
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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: 2017-04-01
Authors: Marques, Carlos A.F.
Pospori, Andreas
Mergo, Pawel
André, Paulo
Webb, David J. (ORCID Profile 0000-0002-5495-1296)



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