Listar Departament: Física por autoría "ab1e8415-d536-4e2a-9ca1-3398f27a9dee"

Mostrando ítems 1-9 de 9

    • closedAccess   25 Million Sensing Measurements Per Second Using Quasi-Integer Ratio Time-Expanded φOTDR 

      Soriano-Amat, Miguel; Martins, Hugo; Durán, Vicente; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario Optica Publishing Group (2022)
      We demonstrate the detection of strain perturbations along a 500 m optical fiber with 2 cm spatial resolution and 1 kHz sampling frequency via quasi-integer-ratio time-expanded φOTDR, requiring less than 100 MHz photodetection ...

    • openAccess   All-optical coherent pulse compression for dynamic laser ranging using an acousto-optic dual comb 

      BILLAULT, vincent; Durán, Vicente; Fernandez-Pousa, Carlos; Crozatier, Vincent; Dolfi, Daniel; guillet de chatellus, hugues Optical Society of America (2021-07-22)
      We demonstrate a new and simple dynamic laser ranging platform based on analog all-optical coherent pulse compression of modulated optical waveforms. The technique employs a bidirectional acousto-optic frequency shifting ...

    • openAccess   Bidirectional frequency-shifting loop for dual-comb spectroscopy 

      Durán, Vicente; Djevarhidjian, Leo; guillet de chatellus, hugues Optical Society of America (2019)
      We present a bidirectional recirculating frequency-shifting loop, seeded by a continuous-wave (cw) laser, to perform multi-heterodyne interferometry. This fiber-optic system generates two counter-propagating “acousto-optic” ...

    • openAccess   Phase calibration of spatial light modulators by means of Fresnel images 

      Martínez-León, Lluís; Jaroszewicz, Z.; Kołodziejczyk, A.; Durán, Vicente; Tajahuerce, Enrique; Lancis, Jesús Institute of Physics (2009)
      Reliable application of spatial light modulators (SLMs) as programmable diffractive optical elements requires a thorough calibration. In this paper, we propose a method for calibrating SLMs based on the evaluation of ...

    • openAccess   Poincaré-sphere representation of phase-mostly twisted nematic liquid crystal spatial light modulators 

      Durán, Vicente; Clemente Pesudo, Pedro Javier; Martínez-León, Lluís; Climent, Vicent; Lancis, Jesús Institute of Physics (2009)
      We establish necessary conditions in order to design a phase-only wave front modulation system from a liquid crystal display. These conditions determine the dependence of the polarization state of the light emerging from ...

    • closedAccess   Spatially resolved dual-comb sensing using a single electro-optic modulator 

      Escobar-Vera, Camilo; Soriano-Amat, Miguel; MORENO OYERVIDES, ALDO LUIS; Khan, Farid Ullah; Bonilla-Manrique, Oscar E.; Fernández Ruiz, María del Rosario; Martin-Lopez, Sonia; Durán, Vicente; Gonzalez-Herraez, Miguel; Martín-Mateos, Pedro Optica Publishing Group (2022)
      We present a dual-comb imaging system based on a single pseudo-randomly driven electro-optic modulator. The result is a cost-efficient and robust fiber-based scheme that can be employed to perform spatially resolved ...

    • openAccess   Time-expanded φOTDR using low-frequency electronics 

      Soriano-Amat, Miguel; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario; Durán, Vicente Optica Publishing Group (2023-01)
      Time expanded phase-sensitive optical time-domain reflectometry (TE-φOTDR) is a recently reported technique for distributed optical fiber sensing based on the interference of two mutually coherent optical frequency combs. ...

    • openAccess   Use of polar decomposition of Mueller matrices for optimizing the phase response of a liquid-crystal- on-silicon display 

      Martínez-León, Lluís; Clemente Pesudo, Pedro Javier; Durán, Vicente; Climent, Vicent; Tajahuerce, Enrique; Lancis, Jesús Optical Society of America (2008)
      We provide experimental measurement of the Mueller matrices corresponding to an on-state liquid-crystal-on-silicon display as a function of the addressed voltage. The polar decomposition of the Mueller matrices determines ...

    • openAccess   Use of principal states of polarization of a liquid crystal device to achieve a dynamical modulation of broadband beams 

      Durán, Vicente; Clemente Pesudo, Pedro Javier; Lancis, Jesús Optical Society of America (2009)
      A spatially resolved polarization switcher operating over a bandwidth of 200 nm is demonstrated. The system is based on liquid crystal technology and no specific-purpose birefringent element is required. The procedure is ...