Now showing items 1-20 of 54

    • 46-km-long Raman amplified hybrid double-bus network with point and distributed Brillouin sensors 

      Fernández Vallejo, Montserrat Upna; Olier Aguado, David; Zornoza Indart, Ander; Pérez Herrera, Rosa Ana Upna Orcid; Díaz Lucas, Silvia Upna Orcid; Elosúa Aguado, César Upna Orcid; Bariáin Aisa, Cándido Upna Orcid; Loayssa Lara, Alayn Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (IEEE, 2012)   Artículo / Artikulua  OpenAccess
      We experimentally demonstrate a 46-km hybrid network that combine point and distributed Brillouin sensors. The proposed sensor network multiplexes low-cost intensity point sensors based on fiber-optic tapers, which are ...
    • Application of remote power-by-light switching in a simplified BOTDA sensor network 

      Bravo Acha, Mikel Upna Orcid; Zornoza Indart, Ander; Loayssa Lara, Alayn Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; López Higuera, José Miguel; Ullán Nieto, Ángel (MDPI, 2013)   Artículo / Artikulua  OpenAccess
      We propose and demonstrate the use of spatial multiplexing as a means to reduce the costs of distributed sensing networks. We propose a new scheme in which remote power-by-light switching is deployed to scan multiple ...
    • BOTDA measurements tolerant to non-local effects by using a phase-modulated probe wave and RF demodulation 

      Urricelqui Polvorinos, Javier Upna Orcid; Sagüés García, Mikel Upna Orcid; Loayssa Lara, Alayn Upna Orcid (Optical Society of America, 2013)   Artículo / Artikulua  OpenAccess
      We demonstrate a Brillouin optical time domain analysis sensor based on a phase modulated probe wave and RF demodulation that provides measurements tolerant to frequency dependent variations of the pump pulse power induced ...
    • Brillouin distributed sensing assisted by Brillouin amplification of pump pulses 

      Urricelqui Polvorinos, Javier Upna Orcid; Sagüés García, Mikel Upna Orcid; Loayssa Lara, Alayn Upna Orcid (IEEE, 2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We demonstrate, for the first time to our knowledge, the extension of the measurement range of Brillouin distributed sensors (BDS) by using a distributed Brillouin amplifier (DBA) to compensate the attenuation of the ...
    • Brillouin optical time-domain analysis sensor assisted by Brillouin distributed amplification of pump pulses 

      Urricelqui Polvorinos, Javier Upna Orcid; Sagüés García, Mikel Upna Orcid; Loayssa Lara, Alayn Upna Orcid (Optical Society of America, 2015)   Artículo / Artikulua  OpenAccess
      We demonstrate the extension of the measurement range of Brillouin optical time-domain analysis (BOTDA) sensors using a distributed Brillouin amplifier (DBA). The technique is based on injecting a DBA pump wave in the ...
    • Brillouin optical time-domain analysis sensor with amplification of pump pulses and tolerant to non-local effects 

      Mompó Roselló, Juan José Upna; Urricelqui Polvorinos, Javier Upna Orcid; Loayssa Lara, Alayn Upna Orcid (SPIE, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We demonstrate a simple technique to provide conventional Brillouin optical time-domain analysis sensor with compensation for pump pulse attenuation and tolerance to non-local effects. The technique is based on operating ...
    • Brillouin optical time-domain analysis sensor with pump pulse amplification 

      Mompó Roselló, Juan José Upna; Urricelqui Polvorinos, Javier Upna Orcid; Loayssa Lara, Alayn Upna Orcid (Optical Society of America, 2016)   Artículo / Artikulua  OpenAccess
      We demonstrate a simple technique to provide conventional Brillouin optical time-domain analysis sensors with mitigation for pump pulse attenuation. The technique is based on operating the sensor in loss configuration so ...
    • Brillouin optical time-domain analyzer for extended sensing range using probe dithering and cyclic coding 

      Iribas Pardo, Haritz Upna Orcid; Loayssa Lara, Alayn Upna Orcid; Sauser, Florian; Llera, Miguel; Le Floch, Sébastien (SPIE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We present an enhanced performance Brillouin optical time-domain analysis sensor that uses dual probes waves with optical frequency modulation and cyclic coding. The frequency modulation serves to increase the probe power ...
    • Brilloun optical time domain analysis sensor assisted by a Brillouin distributed amplifier 

      Urricelqui Polvorinos, Javier Upna Orcid; Sagüés García, Mikel Upna Orcid; Loayssa Lara, Alayn Upna Orcid (SPIE, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We demonstrate the extension of the measurement range of Brillouin optical time-domain analysis (BOTDA) sensors using a distributed Brillouin amplifier (DBA). The technique is based on injecting a DBA pump wave in the ...
    • Compensation of nonlocal effects induced by the extinction ratio of pump pulses in Brillouin optical time-domain analysis sensors 

      Mariñelarena Ollacarizqueta, Jon Upna Orcid; Iribas Pardo, Haritz Upna Orcid; Urricelqui Polvorinos, Javier Upna Orcid; Loayssa Lara, Alayn Upna Orcid (Optical Society of America, 2019)   Artículo / Artikulua  OpenAccess
      We demonstrate a technique to compensate the nonlocal effects that appear in Brillouin optical time-domain analysis sensors when pump pulses with limited extinction ratio are deployed. These recently discovered nonlocal ...
    • Contribution to the advancement of Brillouin optical time-domain analysis sensors 

      Iribas Pardo, Haritz Upna Orcid (2018)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Distributed fiber optic sensors (DFOS) are becoming an increasingly used technology to monitor the integrity of structures. This is due to the fact that this technology can be embedded within the structure and provide ...
    • Contribution to the development of Brillouin optical time-domain analysis sensors 

      Urricelqui Polvorinos, Javier Upna Orcid (2016)   Tesis doctoral / Doktoretza tesia  OpenAccess
      This thesis dissertation concentrates on solving some of the limitations described by proposing novel techniques. The first technique is based on using a phase-modulated probe wave with self-heteroyne detection and RF ...
    • Contribution to the development of distributed fiber optic sensors based on stimulated Brillouin scattering 

      Zornoza Indart, Ander (2014)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Fiber optic sensors are becoming a disruptive technology in monitoring integrity of structures. Their low loss, electromagnetic immunity, remote sensing possibilities, multiplexing possibilities and light weight are very ...
    • Contribution to the development of distributed fiber optic sensors based on the Brillouin and Rayleigh scattering effects 

      Mompó Roselló, Juan José Upna (2020)   Tesis doctoral / Doktoretza tesia
      En esta tesis se presenta diferentes técnicas que contribuyen en la mejora de DOFS basados en dispersión Brillouin y Rayleigh. Todas estas técnicas han sido demostradas experimentalmente mostrando resultados prometedores. ...
    • Contributions to the development of Brillouin distributed sensors for structural health monitoring 

      Mariñelarena Ollacarizqueta, Jon Upna Orcid (2019)   Tesis doctoral / Doktoretza tesia  OpenAccess
      The main objectives of this thesis is to contribute to the enhancement of the performance of distributed optical ber sensors (DOFS) based on stimulated Brillouin scattering (SBS) by analyzing their limitations and proposing ...
    • Cost-effective Brillouin optical time-domain analysis sensor using a single optical source and passive optical filtering 

      Iribas Pardo, Haritz Upna Orcid; Urricelqui Polvorinos, Javier Upna Orcid; Mariñelarena Ollacarizqueta, Jon Upna Orcid; Sagüés García, Mikel Upna Orcid; Loayssa Lara, Alayn Upna Orcid (Hindawi Publishing Corporation, 2016)   Artículo / Artikulua  OpenAccess
      We present a simplified configuration for distributed Brillouin optical time-domain analysis sensors that aims to reduce the cost of the sensor by reducing the number of components required for the generation of the two ...
    • Cyclic coding for Brillouin optical time-domain analyzers using probe dithering 

      Iribas Pardo, Haritz Upna Orcid; Loayssa Lara, Alayn Upna Orcid; Sauser, Florian; Llera, Miguel; Le Floch, Sébastien (Optical Society of America, 2017)   Artículo / Artikulua  OpenAccess
      We study the performance limits of mono-color cyclic coding applied to Brillouin optical time-domain analysis (BOTDA) sensors that use probe wave dithering. BOTDA analyzers with dithering of the probe use a dual-probe-sideband ...
    • Detrimental effects in Brillouin distributed sensors caused by EDFA transient 

      Feng, Cheng; Iribas Pardo, Haritz Upna Orcid; Mariñelarena Ollacarizqueta, Jon Upna Orcid; Schneider, Thomas; Loayssa Lara, Alayn Upna Orcid (Optical Society of AmericaIEEE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We investigate the deleterious effect and the error in Brillouin optical time-domain analyzers induced by the combination of a low extinction ratio pulse generation with the transient behavior of erbium-doped fiber amplifiers.
    • Distributed dynamic strain sensing via perfect periodic coherent codes and a polarization diversity receiver 

      Mompó Roselló, Juan José Upna; Shiloh, Lihi; Arbel, Nadav; Levanon, Nadav; Loayssa Lara, Alayn Upna Orcid; Eyal, Avishay (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      Rayleigh scattering-based dynamic strain sensing with high spatial resolution, fast update rate, and high sensitivity is highly desired for applications such as structural health monitoring and shape sensing. A key issue ...
    • Dual-probe linearly-configured BOCDA system with enlarged modulation amplitude 

      Mariñelarena Ollacarizqueta, Jon Upna Orcid; Kim, Yong Hyun; Loayssa Lara, Alayn Upna Orcid; Song, Kwang Yong (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We present and experimentally demonstrated a linearly-configured Brillouin optical correlation domain analysis (LC-BOCDA) system that allows large modulation amplitude (Δf) based on a dual probe wave and the control of ...