Barrera, DavidGoicoechea Fernández, JavierMadrigal, JavierGonzález Larequi, MartaArregui San Martín, Francisco JavierSales, Salvador2024-12-262024-12-262018Barrera, D., Goicoechea, J., Madrigal, J., González-Larequi, M., Arregui, F. J., Sales, S. (2018). Partially coated long period fiber bragg gratings in multicore optical fibers. In The Optical Society, Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), OSA Technical Digest (pp. 1). Optica Publishing Group. https://doi.org/10.1364/SENSORS.2018.SeM4E.5.978-1-943580-43-910.1364/SENSORS.2018.SeM4E.5https://academica-e.unavarra.es/handle/2454/52795Multicore optical fibers (MCFs) have attracted considerable interest in the last years due to their potential in many applications including broadband communications, microwave photonics, and optical sensing [1,2]. In optical sensing, MCFs has been used in the past for implementing curvature and shape sensors [3]. However, the potential of MCFs for optical sensing is not limited to mechanical sensors and they can be used for implementing other types of sensors. In this paper, we investigate the use of MCFs for external refractive index (RI) sensing. We use LPGs inscribed in the cores of the fiber to detect changes in the external refractive index. Partially coating the surface of the optical fiber we can modify the sensitivity of the cores.application/pdfeng© 2018 The Author(s) One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.Multicore optical fibers (MCFs)Optical sensingLPGsSnO2 layersinfo:eu-repo/semantics/conferenceObject2024-12-26info:eu-repo/semantics/openAccess