Now showing items 1-20 of 37

    • Morales Inostroza, Luis; Vicencio Poblete, Rodrigo (American Physical Society, 2016)
      We develop a simple and general method to construct arbitrary flat-band lattices. We identify the basic ingredients behind zero-dispersion bands and develop a method to construct extended lattices based on a consecutive ...
    • Vicencio Poblete, Rodrigo; Molina Gálvez, Mario; Kivshar, Yuri S. (2004)
      We study all-optical switching based on the dynamic properties of discrete vector solitons in waveguide arrays. We employ the concept of polarization mode instability and demonstrate simultaneous switching and amplification ...
    • Rojas Rojas, Santiago; Morales Inostroza, Luis; Naether, U.; Xavier, G. B.; Nolte, S.; Szameit, A.; Vicencio Poblete, Rodrigo; Lima, G.; Delgado, A. (American Physical Society, 2014)
      © 2014 American Physical Society. We study the polarization properties of elliptical femtosecond-laser-written waveguide arrays. An analytical model is presented to explain the asymmetry of the spatial transverse profiles ...
    • Johansson, Magnus; Naether, Uta; Vicencio Poblete, Rodrigo (Amer Physical Soc, 2015)
      We discuss the properties of nonlinear localized modes in sawtooth lattices, in the framework of a discrete nonlinear Schrodinger modelwith general on-site nonlinearity. Analytic conditions for existence of exact compact ...
    • Vicencio Poblete, Rodrigo; Molina Gálvez, Mario; Kivshar, Yuri S. (Optical Society of America (OSA), 2003)
      A study was performed on controlled switching of discrete solitons in waveguide arrays. The study involved weak steplike modulation of the coupling strength in the array with the period larger than the waveguide spacing. ...
    • Vicencio Poblete, Rodrigo; Mejía-Cortés, Cristian (2014)
      We study the propagation of non-diffracting images in kagome photonic lattices. In a weak-coupling regime (discrete approach), the linear spectrum is composed by only three bands, including a completely degenerated and ...
    • Vicencio Poblete, Rodrigo; Mejía Cortés, Cristian (IOP Publishing, 2014)
      We study the propagation of non-diffracting images in kagome photonic lattices. In a weak-coupling regime (discrete approach), the linear spectrum is composed by only three bands, including a completely degenerated and ...
    • Molina Gálvez, Mario; Vicencio Poblete, Rodrigo; Kivshar, Yuri S. (OPTICAL SOC AMER, 2006-06-01)
      We discuss the formation of self-trapped localized states near the edge of a semi-infinite array of nonlinear optical waveguides. We study a crossover from nonlinear surface states to discrete solitons by analyzing the ...
    • Vicencio Poblete, Rodrigo; Flach, Sergej; Molina Gálvez, Mario; Kivshar, Yuri S. (2007)
      We study nonlinear surface modes in two-dimensional anisotropic periodic photonic lattices and demonstrate that, in a sharp contrast to one-dimensional discrete surface solitons, the mode threshold power is lower at the ...
    • Allio, Raphaël; Guzmán Silva, Diego; Cantillano, Camilo; Morales Inostroza, Luis; López González, Dany; Etcheverry, Sebastián; Vicencio Poblete, Rodrigo; Armijo, Julien (IOP Publishing, 2015)
    • Allio, Raphaël; Guzmán-Silva, Diego; Cantillano, Camilo; Morales-Inostroza, Luis; Lopez-Gonzalez, Dany; Etcheverry, Sebastián; Vicencio Poblete, Rodrigo; Armijo, Julien (Institute of Physics Publishing, 2015)
    • Guzmán Silva, D.; Mejía Cortés, Cristian; Bandres, M. A.; Rechtsman, M C; Weimann, S.; Nolte, S.; Segev, M.; Szameit, A.; Vicencio Poblete, Rodrigo (Deutsche Physikalische Gesellschaft, 2014)
      We analyze the transport of light in the bulk and at the edge of photonic Lieb lattices, whose unique feature is the existence of a flat band representing stationary states in the middle of the band structure that can ...
    • Vicencio Poblete, Rodrigo; Brand, Joachim; Flach, Sergej (2007)
      We study the transport of atoms across a localized Bose-Einstein condensate in a one-dimensional optical lattice. For atoms scattering off the condensate, we predict total reflection as well as full transmission for certain ...
    • Miroshnichenko, Andrey E.; Kivshar, Yuri S.; Vicencio Poblete, Rodrigo; Molina Gálvez, Mario (2005)
      We study resonant light scattering in arrays of channel optical waveguides in which tunable quadratic non-linearity is introduced as nonlinear defects by periodic poling of single (or several) waveguides in the array. We ...
    • Naether, Uta; Rivas, Daniel E.; Larenas, Manuel A.; Molina Gálvez, Mario; Vicencio Poblete, Rodrigo (Optical Society of America (OSA), 2009)
      We study a waveguide array with an embedded nonlinear saturable impurity. We solve the impurity problem in closed form and find the nonlinear localized modes. Next, we consider the scattering of a small-amplitude plane ...
    • Real, Bastián; Cantillano, Camilo; López González, Dany; Szameit, Alexander; Aono, Masashi; Naruse, Makoto; Kim, Song Ju; Wang, Kai; Vicencio Poblete, Rodrigo (Nature Publishing Group, 2017)
      We experimentally study a Stub photonic lattice and excite their localized linear states originated from an isolated Flat Band at the center of the linear spectrum. By exciting these modes in different regions of the ...
    • Molina Gálvez, Mario; Vicencio Poblete, Rodrigo; Kivshar, Yuri S. (ELSEVIER, 2006-01-30)
      We study the properties of localized impurity modes and the transmission of plane waves across a general nonlinear impurity embedded in an infinite one-dimensional linear chain. Using the formalism of the lattice Green ...
    • Belicev, P. P.; Gligoric, G.; Radosavljevic, A.; Maluckov, A.; Stepic, M.; Vicencio Poblete, Rodrigo; Johansson, M. (American Physical Society, 2015)
      The localized mode propagation in binary nonlinear kagome ribbons is investigated with the premise to ensure controlled light propagation through photonic lattice media. Particularity of the linear system characterized by ...
    • Mejía Cortés, Cristian; Vicencio Poblete, Rodrigo; Malomed, Boris A. (American Physical Society, 2013)
      We investigate mobility regimes for localized modes in the discrete nonlinear Schr¨odinger (DNLS) equation with the cubic-quintic on-site terms. Using the variational approximation, the largest soliton’s total power admitting ...
    • Rojas Rojas, Santiago; Vicencio Poblete, Rodrigo; Molina Gálvez, Mario; Abdullaev, F. Kh (2011)
      Modulational instability and discrete matter wave solitons in dipolar BECs, loaded into a deep optical lattice, are investigated analytically and numerically. The process of modulational instability of nonlinear plane ...