Rodríguez Rodríguez, ArmandoLópez-Amo Sáinz, ManuelBravo Acha, Mikel2025-09-242025-09-242025-05-22Rodríguez Rodríguez, A., López-Amo, M., Bravo, M. (2025). Remote power over fiber electro-mechanical modulation for enabling hybrid sensor networks. In Santos, J. L., Lopez-Amo Sainz, M., Sun T. (Eds.), 29th International Conference on Optical Fiber Sensors SPIE. https://doi.org/10.1117/12.3059214.978-1-5106-9187-210.1117/12.3059214https://academica-e.unavarra.es/handle/2454/55065This work presents a power-efficient solution based on Power over Fiber technology that combines and enables the use of electronic devices in fiber optic networks. The optical carrier is modulated via a microelectromechanical variable optical attenuator, using the processed sensor data, which is encoded in a frequency shift keying technique. To illustrate the concept, a 50-km remote environmental station is powered by energy harvesting techniques to provide the requisite power, and a low-power microcontroller encodes the data from electronic sensors. The data was successfully retrieved, achieving data rates of up to 1.5 kbps.application/pdfengCopyright 2025 Society of Photo Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, or modification of the contents of the publication are prohibited.Power over FiberMicroelectromechanical variable optical attenuatorFrequency modulationMicrocontrollerinfo:eu-repo/semantics/conferenceObject2025-09-24info:eu-repo/semantics/openAccess