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Photonics
Volume 7
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10.3390/photonics7010011
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Article

Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings

by
Catarina S. Monteiro
1,
Maria Raposo
2,
Paulo A. Ribeiro
2,
Susana O. Silva
1 and
Orlando Frazão
1,*
1
INESC TEC and Department of Physics and Astronomy, Faculty of Sciences, University of Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
2
CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
*
Author to whom correspondence should be addressed.
Photonics 2020, 7(1), 11; https://doi.org/10.3390/photonics7010011
Submission received: 13 December 2019 / Revised: 11 January 2020 / Accepted: 15 January 2020 / Published: 18 January 2020
(This article belongs to the Special Issue Advanced Optical Materials and Devices)
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Abstract

The use of graphene oxide-based coatings on optical fibers are investigated, aiming to tune the reflectivity of optical fiber surfaces for use in precision sensing devices. Graphene oxide (GO) layers are successfully deposited onto optical fiber ends, either in cleaved or hollow microspheres, by mounting combined bilayers of polyethylenimine (PEI) and GO layers using the Layer-by-Layer (LbL) technique. The reflectivity of optical fibers coated with graphene oxide layers is investigated for the telecom region allowing to both monitor layer growth kinetics and cavity characterization. Tunable reflective surfaces are successfully attained in both cleaved optical fibers and hollow microsphere fiber-based sensors by simply coating them with PEI/GO layers through the LbL film technique.
Keywords: Fabry–Perot interferometer; graphene oxide; optical sensors; layer-by-layer films Fabry–Perot interferometer; graphene oxide; optical sensors; layer-by-layer films

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MDPI and ACS Style

Monteiro, C.S.; Raposo, M.; Ribeiro, P.A.; Silva, S.O.; Frazão, O. Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings. Photonics 2020, 7, 11. https://doi.org/10.3390/photonics7010011

AMA Style

Monteiro CS, Raposo M, Ribeiro PA, Silva SO, Frazão O. Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings. Photonics. 2020; 7(1):11. https://doi.org/10.3390/photonics7010011

Chicago/Turabian Style

Monteiro, Catarina S., Maria Raposo, Paulo A. Ribeiro, Susana O. Silva, and Orlando Frazão. 2020. "Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings" Photonics 7, no. 1: 11. https://doi.org/10.3390/photonics7010011

APA Style

Monteiro, C. S., Raposo, M., Ribeiro, P. A., Silva, S. O., & Frazão, O. (2020). Tuning of Fiber Optic Surface Reflectivity through Graphene Oxide-Based Layer-by-Layer Film Coatings. Photonics, 7(1), 11. https://doi.org/10.3390/photonics7010011

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