Exploració per tema "Bragg gratings"

Ara es mostren els items 1-8 de 8

    • Angular filtering by Bragg photonic microstructures fabricated by physical vapour deposition 

      Grineviciute, Lina; Babayigit, Ceren; Gailevicius, Darius; Bor, Emre; Turduev, Mirbek; Purlys, Vytautas; Tolenis, Tomas; Kurt, Hamza; Staliunas, Kestutis (2019-07-01)
      Article
      Accés obert
      We propose and experimentally demonstrate spatial filtering by photonic crystals in a Bragg configuration. Compared to the Laue configuration, where spatial filtering was already demonstrated before, the Bragg configuration ...

    • Assessment of fiber Bragg grating sensors for monitoring shaft vibrations of hydraulic turbines 

      Sánchez Botello, Xavier; Roig Bauzà, Rafel; Torre Rodríguez, Óscar de la; Madrigal, Javier; Sales, Salvador; Escaler Puigoriol, Francesc Xavier (Multidisciplinary Digital Publishing Institute (MDPI), 2023-07-26)
      Article
      Accés obert
      The structural dynamic response of hydraulic turbines needs to be continuously monitored to predict incipient failures and avoid catastrophic breakdowns. Current methods based on traditional off-board vibration sensors ...

    • Biaxial piezoelectric MEMS mirrors with low absorption coating for 1550 nm long-range LIDAR 

      Mollard, Laurent; Riu, Jordi; Royo Royo, Santiago; Dieppedale, Christel; Hamelin, A.; Koumela, Alexandra; Verdot, T.; Frey, Laurent; Le Rhun, Gwenael; Castellan, Gaël; Licitra, Christophe (Multidisciplinary Digital Publishing Institute (MDPI), 2023-05-09)
      Article
      Accés obert
      This paper presents the fabrication and characterization of a biaxial MEMS (MicroElectroMechanical System) scanner based on PZT (Lead Zirconate Titanate) which incorporates a low-absorption dielectric multilayer coating, ...

    • New modulation zero-shift method to characterize fast group delay ripple of dispersion-compensating fiber Bragg gratings 

      Santos Blanco, M. Concepción; Bernardo Rodi, Santa Patricia de; Mitre Gutierrez, Marco Antonio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-09-30)
      Article
      Accés obert
      An upgrade to standard modulation phase-shift method is shown to improve accuracy through electrical scan of the optical spectrum. Experiments have allowed the capture of fast group delay ripple of a dispersion-compensating ...

    • Optical fiber used as sea water thermometer 

      Garcia Benadí, Albert; Corredera, Pedro; Campo Maldonado, Maria Dolores del; Río Fernandez, Joaquín del; García Izquierdo, Carmen; Hernández de la Villa, Sonia; Nogueras Cervera, Marc; Pulido, Concepción (2015)
      Text en actes de congrés
      Accés obert

    • Traceable sea temperature measurements performed by optical fibers 

      García Izquierdo, Carmen; Garcia Benadí, Albert; Río Fernandez, Joaquín del; Nogueras Cervera, Marc (2017)
      Text en actes de congrés
      Accés obert
      In the framework of the EMRP project “ENV 58. Metrology for essential climate variables”, a new technique to perform traceable temperature measurements of the sea water column and sea water surface was designed and it is ...

    • TRACEABLE SEA TEMPERATURE VERTICAL PROFILE MEASURED BY OPTICAL FIBERS 

      Garcia Benadí, Albert; Río Fernandez, Joaquín del; Nogueras Cervera, Marc; Pulido de Torres, Carlos; García Izquierdo, Carmen; del Campo, D; Corredera, Pedro (IEEE Press, 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Measurement of the seawater temperature at different depths to get a vertical temperature profile on the water column is presented in this paper: The acquisition system based on optical fiber Bragg gratings (FBGs) and the ...

    • Traceable sea water temperature measurements performed by optical fibers 

      García Izquierdo, Carmen; Garcia Benadí, Albert; Corredera, Pedro; Río Fernandez, Joaquín del; Nogueras Cervera, Marc (2018-10-01)
      Article
      Accés obert
      This paper describes a technique to perform traceable temperature measurements of the seawater column andseawater surface, based on optical ¿ber Bragg gratings. The paper explains the di¿erent phases of the work done:design ...