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Fibers 2018, 6(1), 13; doi:10.3390/fib6010013

Advances on Polymer Optical Fiber Gratings Using a KrF Pulsed Laser System Operating at 248 nm

Instituto de Telecomunicações and Physics, Department & I3N, University of Aveiro, 3810-193 Aveiro, Portugal
Graduate Program of Electrical Engineering of Federal University of Espírito Santo, Vitória 29075-910, Brazil
ITEAM Research Institute, Universitat Politècnica de València, 46022 Valencia, Spain
Instituto de Telecomunicações and Department of Electrical and Computer Engineering, Instituto Superior Técnico, University of Lisbon, 1649-004 Lisboa, Portugal
Author to whom correspondence should be addressed.
Received: 8 January 2018 / Revised: 26 January 2018 / Accepted: 8 February 2018 / Published: 1 March 2018
(This article belongs to the Special Issue Optical Fiber Communications)
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This paper presents the achievements and progress made on the polymer optical fiber (POF) gratings inscription in different types of Fiber Bragg Gratings (FBGs) and long period gratings (LPGs). Since the first demonstration of POFBGs in 1999, significant progress has been made where the inscription times that were higher than 1 h have been reduced to 15 ns with the application of the krypton fluoride (KrF) pulsed laser operating at 248 nm and thermal treatments such as the pre-annealing of fibers. In addition, the application of dopants such as benzyl dimethyl ketal (BDK) has provided a significant decrease of the fiber inscription time. Furthermore, such improvements lead to the possibility of inscribing POF gratings in 850 nm and 600 nm, instead of only the 1550 nm region. The progress on the inscription of different types of polymer optical fiber Bragg gratings (POFBGs) such as chirped POFBGs and phase-shifted POFBGs are also reported in this review. View Full-Text
Keywords: polymer optical fibers; fiber gratings; polymer waveguides polymer optical fibers; fiber gratings; polymer waveguides

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Marques, C.A.F.; Leal-Junior, A.G.; Min, R.; Domingues, M.; Leitão, C.; Antunes, P.; Ortega, B.; André, P. Advances on Polymer Optical Fiber Gratings Using a KrF Pulsed Laser System Operating at 248 nm. Fibers 2018, 6, 13.

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