Now showing items 1-15 of 15

    • All-PM fiber loop mirror interferometer analysis and simultaneous measurement of temperature and mechanical vibration 

      Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna (IEEE, 2018)   Artículo / Artikulua  OpenAccess
      In this work, a new all-polarization maintaining (PM) fiber loop mirror interferometer is proposed and validated as temperature and mechanical vibration sensor. The scheme employs the arms of a PM coupler as communication ...
    • High resolution polarization-independent highbirefringence fiber loop mirror sensor 

      Leandro González, Daniel Upna; Bravo Acha, Mikel Upna; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2015)   Artículo / Artikulua  OpenAccess
      In this work, two all polarization-maintaining (PM) highbirefringence (Hi-Bi) fiber loop mirrors (FLM) which are immune to external polarization perturbations are validated both theoretically and experimentally. Simplified ...
    • High sensitivity fiber-optic liquid level sensor using biconical tapered fibers 

      Júdez Colorado, Aitor; Leandro González, Daniel Upna; Pérez Herrera, Rosa Ana Upna; Galarza Galarza, Marko; 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 ...
    • High-resolution transversal load sensor using a random distributed feedback fiber laser 

      Miguel Soto, Verónica de; Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna (SPIE, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, a new application of random distributed feedback lasers to fiber optic sensing has been presented. The particular properties of these lasers, such as the lack of longitudinal modes and high stability, have ...
    • Interferometric vs wavelength selective optical fiber sensors for cryogenic temperature measurements 

      Miguel Soto, Verónica de; Leandro González, Daniel Upna; López Aldaba, Aitor Upna; Beato López, Juan Jesús; Pérez de Landazábal Berganzo, José Ignacio; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel Upna (SPIE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, a preliminary study of the behavior of two different interferometric fiber optic sensors and two different wavelength selective fiber optic sensors is performed. A photonic cristal fiber Fabry-Pérot interferometer, ...
    • 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 ...
    • New multiplexing structures for fiber optic sensors 

      Leandro González, Daniel Upna (2016)   Tesis doctoral / Doktoretza tesia  OpenAccess
      El campo de la fibra óptica ha sufrido una rápida evolución durante las últimas décadas debido a sus buenas prestaciones en aplicaciones de telecomunicaciones. Aprovechando este avance científico y técnico en componentes ...
    • Random fiber lasers: application to fiber optic sensors networks 

      López-Amo Sáinz, Manuel Upna; Leandro González, Daniel Upna; Miguel Soto, Verónica de; Bravo Acha, Mikel Upna; Fernández Vallejo, Montserrat Upna; Pérez Herrera, Rosa Ana Upna (IEEE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Recently, random mirrors have been proposed as a method to create fiber laser cavities. This kind of cavity is based on cooperative Rayleigh scattering, which is generated along a fiber due to the material inhomogeneities ...
    • Simultaneous temperature and vibration monitoring using an all-PM fiber loop mirror interferometer 

      Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna (SPIE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, an all-polarization maintaining fiber loop mirror interferometer is presented and validated as vibration and temperature sensor without crosstalk between measurands. The system is entirely built using ...
    • Study of optical fiber sensors for cryogenic temperature measurements 

      Miguel Soto, Verónica de; Leandro González, Daniel Upna; López Aldaba, Aitor Upna; Beato López, Juan Jesús; Pérez de Landazábal Berganzo, José Ignacio; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel Upna (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      In this work, the performance of five different fiber optic sensors at cryogenic temperatures has been analyzed. A photonic crystal fiber Fabry-Pérot interferometer, two Sagnac interferometers, a commercial fiber Bragg ...
    • Tunable SESAM-based mode-locked soliton fiber laser in linear cavity by axial-strain applied to a FBG 

      Aporta, I.; Leandro González, Daniel Upna; Quintela, M. A.; Pérez Herrera, Rosa Ana Upna; López-Amo Sáinz, Manuel Upna; López Higuera, José Miguel (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      A self-started stable tunable mode-locked (ML) soliton fiber laser in a linear cavity structure composed by commercial passive elements is presented in this paper. It is based on the combination of an Erbium doped fiber ...
    • Ultra-long (275 km) random distributed feedback fiber laser for remote sensor monitoring 

      Miguel Soto, Verónica de; Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena
      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 ...
    • Ultra-long (290 km) remote interrogation sensor network based on a random distributed feedback fiber laser 

      Miguel Soto, Verónica de; Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2018)   Artículo / Artikulua  OpenAccess
      In this work, an interferometric sensor has been interrogated 290 km away from the monitoring station, reaching the longest distance in fiber optic sensing up to date. This has been attained by employing a double-pumped ...
    • Watt-level green random laser at 532  nm by SHG of Yb-doped fiber laser 

      Rota Rodrigo, Sergio Upna; Gouhier, B.; Dixneuf, C.; Antoni Micollier, L.; Guiraud, G.; Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna; Traynor, N.; Santarelli, G. (Optical Society of America, 2018)   Artículo / Artikulua  OpenAccess
      We have developed a Watt-level random laser at 532 nm. The laser is based on a 1064 nm random distributed ytterbium-gain assisted fiber laser seed with a 0.35 nm line-width and 900 mW polarized output power. A study for ...