Rodriguez Schwendtner, E.Navarrete Fernández, María CruzEsteban, ÓscarDíaz Herrera, NataliaGonzález Cano, Agustín2023-06-192023-06-1920150277-786X10.1117/12.2193920https://hdl.handle.net/20.500.14352/35007© 2015 SPIE. International Conference on Optical Fibre Sensors (24º. 2015. Curitiba (Brasil). This work has been partially supported by the European Project ECOAL-MGT (Ecological Management of Coal Piles in Combustion), ref. ECOAL-MGT-SOE-P2-P714, and by the Comunidad de Madrid program SINFOTON (Sensores e Instrumentación en Tecnologías Fotónicas), ref. S2013/MIT-2790.In this work, we show the feasibility of using the evanescent field of a microfiber to excite the fluorescence of a fluorophore deposited on the surface of a polymer optical fiber. The fluorescence intensity gathered by the polymer optical fiber from the emitted on its surface has been measured for several gaps with the excitation fiber, showing a remarkable influence of the evanescent field at distances as high as 2.5mm. A further development of a device based on wrapping the microfiber around the polymer one has been measured, proving a more efficient fluorescence excitation.engjournal articlehttp://dx.doi.org/10.1117/12.2193920http://proceedings.spiedigitallibrary.org/open access535SensorsÓptica (Física)2209.19 Óptica Física