Fiber Optic pH Sensor Based on Long-Period Fiber Grating coated with Polyethylenimine/Polyacrylic acid Layer-by-Layer Electrostatic Self-Assembled Nanofilm

José M. da S. A. Pereira; José M. da S. A. Pereira; João P. Mendes; José M. M. M. de Almeida; José M. M. M. de Almeida; Luís C. C. Coelho; Luís C. C. Coelho

doi:10.1364/OFS.2023.Tu3.9

28th International Conference on Optical Fiber Sensors
Technical Digest Series (Optica Publishing Group, 2023),
paper Tu3.9
•https://doi.org/10.1364/OFS.2023.Tu3.9

Fiber Optic pH Sensor Based on Long-Period Fiber Grating coated with Polyethylenimine/Polyacrylic acid Layer-by-Layer Electrostatic Self-Assembled Nanofilm

José M. da S. A. Pereira, João P. Mendes, José M. M. M. de Almeida, and Luís C. C. Coelho

Optical Fiber Sensors 2023

Naka-ku, Hamamatsu-shi Japan
20–24 November 2023
ISBN: 978-1-957171-30-2

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Poster Session I (Tu3)

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J. M. da S. A. Pereira, J. P. Mendes, J. M. M. M. de Almeida, and L. C. C. Coelho, "Fiber Optic pH Sensor Based on Long-Period Fiber Grating coated with Polyethylenimine/Polyacrylic acid Layer-by-Layer Electrostatic Self-Assembled Nanofilm," in 28th International Conference on Optical Fiber Sensors, Technical Digest Series (Optica Publishing Group, 2023), paper Tu3.9.

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Abstract

An optical fiber pH sensor based on a long-period fiber grating was produced by coating the sensing region with two bilayers of polyethylenimine (PEI) and polyacrylic acid (PAA) using the layer-by-layer self-assembly technique. © 2023 José M. da S. A. Pereira, João P. Mendes, José M. M. de Almeida and Luís C. C. Coelho

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