Fiber Loop Mirror Based on Optical Fiber Circulator for Sensing Applications

dc.contributor.author Paulo Robalinho en
dc.contributor.author Beatriz Gomes Soares en
dc.contributor.author Lobo,A en
dc.contributor.author Susana Oliveira Silva en
dc.contributor.author Orlando Frazão en
dc.contributor.other 4061 en
dc.contributor.other 4678 en
dc.contributor.other 7405 en
dc.contributor.other 7700 en
dc.date.accessioned 2023-05-05T11:20:28Z
dc.date.available 2023-05-05T11:20:28Z
dc.date.issued 2023 en
dc.description.abstract <jats:p>In this paper, a different Fiber Loop Mirror (FLM) configuration with two circulators is presented. This configuration is demonstrated and characterized for sensing applications. This new design concept was used for strain and torsion discrimination. For strain measurement, the interference fringe displacement has a sensitivity of (0.576 ± 0.009) pm?µe-1. When the FFT (Fast Fourier Transformer) is calculated and the frequency shift and signal amplitude are monitored, the sensitivities are (-2.1 ± 0.3) × 10-4 nm-1 µe-1 and (4.9 ± 0.3) × 10-7 µe-1, respectively. For the characterization in torsion, an FFT peaks variation of (-2.177 ± 0.002) × 10-12 nm-1/° and an amplitude variation of (1.02 ± 0.06) × 10-3/° are achieved. This configuration allows the use of a wide range of fiber lengths and with different refractive indices for controlling the free spectral range (FSR) and achieving refractive index differences, i.e., birefringence, higher than 10-2, which is essential for the development of high sensitivity physical parameter sensors, such as operating on the Vernier effect. Furthermore, this FLM configuration allows the system to be balanced, which is not possible with traditional FLMs.</jats:p> en
dc.identifier P-00X-PD0 en
dc.identifier.uri http://dx.doi.org/10.3390/s23020618 en
dc.identifier.uri https://repositorio.inesctec.pt/handle/123456789/13843
dc.language eng en
dc.rights info:eu-repo/semantics/openAccess en
dc.title Fiber Loop Mirror Based on Optical Fiber Circulator for Sensing Applications en
dc.type en
dc.type Publication en
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