Aginaga Etxamendi, Concepción IsabelSocorro Leránoz, Abián BentorFuentes Lorenzo, OmarDel Villar, IgnacioCorres Sanz, Jesús MaríaMatías Maestro, Ignacio2020-06-052021-01-132019K. I. Aginaga-Etxamendi, A. B. Socorro-Leranoz, O. Fuentes, I. Del Villar, J. M. Corres and I. R. Matias, 'AC/DC Millivoltage Sensor by means of ITO-coated Optical Fibers: Towards Monitoring of Biosignals,' 2019 IEEE SENSORS, Montreal, QC, Canada, 2019, pp. 1-4, doi: 10.1109/SENSORS43011.2019.8956575.978-1-7281-1634-110.1109/SENSORS43011.2019.8956575https://academica-e.unavarra.es/handle/2454/37096This contribution shows the monitoring of AC and DC millivoltage signals by means of lossy mode resonances generated by Indium Tin Oxide (ITO) on optical fibers. Sensors were obtained by sputtering ITO thin-films onto 25 mm-length segments of 200 μm bare optical fibers. Depositing a 1 μm thin-film of ITO leads to obtain reduced thin-film resistances of near 340 ohms. This allows the detection of voltage signals by monitoring the wavelength shift of the resonances. Sensitivities up to 40 nm/V can be achieved when tracking sinusoidal signals of a few cents of mV peak-to-peak. This opens the path for further research pursuing the detection of biomedical signals.4 p.application/pdfeng© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.Fiber-optic sensorsLossy mode resonancesIndiumtin-oxide (ITO)Thin-filmAC/DC voltageinfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccessAcceso abierto / Sarbide irekia