Enviaments recents

  • Conmutacion totalmente optica de ondas guiadas en medios virefring. 

    Santos Blanco, M. Concepción; Pérez Torres, Juan; Torner Sabata, Lluís (1993)
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    Accés obert
    A new kind of tunable all-optical guided-wave thresholding device using waveguides consisting of both birefringent linear media and isotropic nonlinear media is discussed. The behavior of the lower threshold with a suitable ...
  • Ondas híbridas en guías ópticas ultradelgadas 

    Ojeda, C.; Cid, J.; Torner Sabata, Lluís (1993)
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    Accés obert
    The existence conditions and waveguiding properties of new hybri.d, TE and TM dominant waves guided by ultrathin organic films cladded by birefringent crystals are reported
  • Sensores opticos integrados: una revision del estado actual del arte 

    Roca, J.; Torner Sabata, Lluís (Universitat Politècnica de València, 1993)
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    Accés obert
    The state of the art on integrated optical sensor technology is briefiy reviewed. Applications, problems to overcome, and potential in the future are introduced.
  • Engineering of effective quadratic and cubic nonlinearities in two-period QPM gratings 

    Bang, O; B. CLAUSEN, CARL; Torner Sabata, Lluís (OPTICAL SOCIETY OF AMERICA, 2000)
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    Accés obert
    Summary form only given. Quasi-phase-matching (QPM) by electric-field poling in ferro-electric materials, such as LiNbO/sub 3/, is promising due to the possibilities of engineering the photolithographic mask, and thus the ...
  • Vortex nucleation and evolution in parametric wave mixing 

    Molina Terriza, Gabriel; Torner Sabata, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 1999)
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    Accés obert
    We predict a variety of new phenomena, that includes the spontaneous nucleation of multiple vortex twins, vortex rotation and drift, vortex-antivortex interaction and annihilation, and formation of quasi-aligned patterns ...
  • Trapping of light beams and formation of spatial solitary waves in quadratic nonlinear media 

    Torner Sabata, Lluís; Torruellas, W; Stegeman, G; Menyuk, C; Wright, E (Institute of Electrical and Electronics Engineers (IEEE), 1996)
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    Accés obert
    Summary form only given. In this paper we report the outcome of our comprehensive investigations to study the dynamics of the beam trapping in both bulk crystals and optical planar waveguides made of quadratic nonlinear ...
  • A measure of flow vorticity with twisted beams of light 

    Belmonte Molina, Aniceto; Rosales Guzmán, Carmelo; Pérez Torres, Juan (Curran, 2016)
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    Accés restringit per política de l'editorial
    The measurement of vorticity, a parameter providing local measurements of rotation at every point in a flow, would greatly assist research fields as diverse as biology microfluidics, complex motions in the oceanic and ...
  • Sensitivity study of the microwave spiralimetric imaging 

    Jofre Roca, Lluís; Blanch Boris, Sebastián; Cardama Aznar, Ángel; Rius Casals, Juan Manuel; Torner Sabata, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2005)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The use of the spiral modes-electromagnetically related to the orbital momentum of the photons- at microwave frequencies for imaging purposes is studied and some preliminary numerical and experimental results for basic ...
  • Observation of Dyakonov surface waves 

    Takayama, Osamu; Crasovan, I; Artigas García, David; Torner Sabata, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2009)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Summary form only given. A special type of surface wave was predicted by M. I. Dyakonov in 1988. Such waves exist under special conditions at the interface of transparent anisotropic materials, and hens they are lossless. ...
  • Observation of two-dimensional spatial solitary waves in a ¿ (2) medium 

    Torruellas, William; Stegeman, George; Torner Sabata, Lluís (IEEE Press, 1995)
    Text en actes de congrés
    Accés obert
    Cascaded second order nonlinear processes offer a new range of opportunities. Indeed we have shown that under near phase matching conditions, the associated nonlinear phase distortion to the fundamental wave depletion ...

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