Corrugated long-period grating for strain, displacement and temperature sensor applications

Nuno F. Valente; Flávio Figueira; Lúcia Bilro; Ricardo Oliveira

doi:10.1117/12.3016990

20 June 2024 Corrugated long-period grating for strain, displacement and temperature sensor applications

Nuno F. Valente, Flávio Figueira, Lúcia Bilro, Ricardo Oliveira

Proceedings Volume 13001, Specialty Optical Fibres VIII; 130010C (2024) https://doi.org/10.1117/12.3016990
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

In this work, we present a novel corrugated long-period grating. The structure was made through the periodic distribution of a photopolymerizable resin onto the surface of an optical fiber, followed by an etching process. The device showed capabilities to be used in strain, displacement, and temperature applications. For the strain measurement, the resonance dip power was linearly increased at a rate of 1.3 dB/mε, showing negligible wavelength shift, making it ideal for lowcost intensity detection schemes. Regarding the displacement characterization, it was verified the capability to measure this parameter in both power and wavelength detection schemes, being the most attractive feature its wide measurement range, i.e. ≈ 25 mm, being above the ones reported in literature. For the temperature, it was verified that there is a direct correlation between the increase of the temperature and the dip wavelength shift.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Nuno F. Valente, Flávio Figueira, Lúcia Bilro, and Ricardo Oliveira "Corrugated long-period grating for strain, displacement and temperature sensor applications", Proc. SPIE 13001, Specialty Optical Fibres VIII, 130010C (20 June 2024); https://doi.org/10.1117/12.3016990

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