Optical fiber laser sensor for torsion measurement using a three-core fiber and a nanocrystals-based reflector
This study presents a novel and highly sensitive torsion sensor based on a multicore fiber (MCF) inside a Sagnac interferometer, which acts both as a mirror and a sensor head of a fiber ring laser. This laser sensor configuration also incorporates a distributed reflector consisting of an optical fiber segment doped with ZnGa<sub>2</sub>O<sub>4</sub> nanocrystals, enhancing the overall performance. The sensor demonstrates high sensitivity to torsion across a range of 0° to 150°. The phase analysis in the 0°-50° range achieves a sensitivity of 0.08 rad/°. A Machine Learning Integration, with a function-fitting neural network, shows a detection limit of 0.06°.
Authors
- Philippe Roy (ORCID: https://orcid.org/0000-0002-6775-6852)
- Manuel López-Amo (ORCID: https://orcid.org/0000-0002-9399-5398)
- Marko Galarza (ORCID: https://orcid.org/0000-0002-3902-8188)
- Ariana L. C. Serrano (ORCID: https://orcid.org/0000-0002-7623-9910)
- Rosa Ana Pérez-Herrera (ORCID: https://orcid.org/0000-0002-6856-9143)
- Arturo Sanchez-Gonzalez (ORCID: https://orcid.org/0000-0002-8877-2050)
- José Raúl Vento Álvarez (ORCID: https://orcid.org/0009-0008-6389-8205)
- Georges Humbert (ORCID: https://orcid.org/0000-0002-4910-0569)
- Raphaël Jamier (ORCID: https://orcid.org/0000-0001-5238-2408)
- Romain Dauliat
Institutions
- Centre National de la Recherche Scientifique (FR)
- Universidad Pública de Navarra (UPNA) (ES)
- University of Pinar del Río (CU)
- XLIM (FR)
- Université de Limoges (FR)
- Universidad de Navarra (ES)
Publication Details
- Published
- 2025-05-22
- DOI
- https://doi.org/10.1117/12.3060713
- Citations
- 2
- Primary Topic
- Advanced Fiber Optic Sensors
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- European Commission
- Agencia Estatal de Investigación