Now showing items 1-4 of 4

    • High sensitivity fiber-optic liquid level sensor using biconical tapered fibers 

      Júdez Colorado, Aitor Upna; Leandro González, Daniel Upna; Pérez Herrera, Rosa Ana Upna; Galarza Galarza, Marko Upna; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A liquid level sensor is presented using a biconical tapered standard single-mode fiber, being its main characteristic an outstanding sensitivity for a low cost transducer. Temperature compensation is enabled with the same ...
    • Micro-drilled optical fiber for enhanced laser strain sensors 

      Pérez Herrera, Rosa Ana Upna; Bravo Acha, Mikel Upna; Roldán Varona, Pablo; Leandro González, Daniel Upna; Rodríguez Cobo, L.; López Higuera, José Miguel; López-Amo Sáinz, Manuel Upna (SPIE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, we present an experimental measurement of temperature and strain sensitivities of a micro-drilled optical fiber (MDOF). The MDOF consisted of a quasi-randomly distributed reflector along a single mode fiber ...
    • Multiplexing optical fiber Fabry-Perot interferometers based on air-microcavities 

      Pérez Herrera, Rosa Ana Upna; Novais, S.; Bravo Acha, Mikel Upna; Leandro González, Daniel Upna; Silva, Susana; Frazão, Orlando; López-Amo Sáinz, Manuel Upna (SPIE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work we demonstrate the multiplexing capability of new optical fiber Fabry-Perot interferometers based on airmicrocavities using a commercial FBG interrogator. Three optimized air-microcavity interferometer sensors ...
    • Ultra-long (275 km) random distributed feedback fiber laser for remote sensor monitoring 

      Miguel Soto, Verónica de Upna; Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      An interferometric sensor located 275 km away from the monitoring station has been interrogated by a double-pumped random distributed feedback fiber laser, reaching the longest distance in fiber optic remote sensing reported ...