Dávila Galiana, Rebeca BeatrizMatías Maestro, IgnacioZabala, SilviaSocorro Leránoz, Abián BentorRivero Fuente, Pedro J.Corres Sanz, Jesús María2024-11-072024-11-072024-06-08Davila, R. B., Matias, I. R., Zabala, S., Socorro-Leranoz, A. B., Rivero, P. J., Corres, J. M. (2024). Printed optical waveguide temperature sensor with rhodamine-doped core. IEEE Sensors Letters, 8(8), 1-4. https://doi.org/10.1109/LSENS.2024.3420781.2475-147210.1109/LSENS.2024.3420781https://academica-e.unavarra.es/handle/2454/52463This letter demonstrates the fabrication of a temperature optical sensor by printing the corresponding sensitive optical waveguide directly onto a flexible flat substrate. The printed waveguide was carried out using a coaxial needle and an electrohydrodynamic (EHD) machine. The fluorescent organic compound, rhodamine B, was used for doping the core of the printed waveguide as temperature sensible dye. The optical sensitive waveguide manufactured is compact, ensuring coupling with the input and output optical fibers. The response of the printed optical sensor was evaluated to temperature variations by measurement of both, the peak intensity and the wavelength of the fluorescence spectra. The experimental characteristic and sensitivity of the sensor were obtained.application/pdfeng© 2024 The Authors. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 LicenseElectrohydrodynamic (EHD) printingFluorescent optical waveguidesOptical sensorsPrinted optical sensorSensitive polymeric waveguidesTemperature sensorsinfo:eu-repo/semantics/article2024-11-07info:eu-repo/semantics/openAccess