Fiber Sensors: Multiple optical techniques for fiber sensing

Since 2000, we have developed a unique fiber grating fabrication system. The system allows the inscription of high-quality Fiber Bragg Gratings (FBGs), Long Period Gratings (LPGs) or any other perturbation in many different types of fibres: SMF, MMF, FMF, MCF and PCF amongst others. This fact has allowed us to design and fabricate customized devices for communications, sensors and metrology applications.

Besides, the PRL members have the knowledge of Microwave Photonics which provides us with the skills to develop novel interrogation schemes for optical sensors and metrology.

During the last decades, we have been involved in European and National research projects for the development of advanced communication devices and optical fiber sensors for civil engineering and space applications.

Nowadays, we are participating in the ITN Marie Skłodowska-Curie FINESSE (FIbre NErvous Sensing SystEms) to develop a new generation of distributed optical fiber sensors for a safer society Also, we are developing new fiber devices in special fibers to improve optical communications [1], advanced metrology [2] and multiparameter/multidimensional fibre sensors [3]-[5].


  1. I. Gasulla, D. Barrera, J. Hervás, and S. Sales, “Spatial Division Multiplexed Microwave Signal processing by selective grating inscription in homogeneous multicore fibers,” Scientific Reports, 7, 41727, (2017)
  2. G. Muñoz-Matutano, D. Barrera, C.R. Fernández-Pousa, R. Chulia-Jordan, L. Seravalli, G. Trevisi, P. Frigeri, S. Sales, and J.P. Martínez-Pastor, “All-Optical Fiber Hanbury Brown & Twiss Interferometer to study 1300 nm single photon emission of a metamorphic InAs Quantum Dot”, Scientific Reports, 6, 27214, (2016),
  3. J. Hervas, A.L. Ricchiuti, W. Li, N.H. Zhu, C.R. Fernandez-Pousa, S. Sales, M. Li and J. Capmany, “Microwave Photonics for Optical Fiber Sensors,” in IEEE Journal of Selected Topics in Quantum Electronics, doi: 10.1109/JSTQE.2017.2651117, (2017).
  4. D. Barrera, I. Gasulla and S. Sales. “Multipoint two-dimensional curvature optical fiber sensor based on a non-twisted homogeneous four-core fiber”, Journal of Lightwave Technology, vol. 33, pp. 2445-24450, (2015).
  5. A. L. Ricchiuti, D. Barrera, S. Sales, L. Thévenaz and J. Capmany, “Long fiber Bragg grating sensor interrogation using discrete-time microwave photonic filtering techniques,” Optics Express, 21(23), pp. 28175-28181, (2013).