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Accurate measurement of nonlinear ellipse rotation using a phase-sensitive method
(Optical Society of America - OSAWashington, DC, 2014)
We report on the accurate measurement of nonlinear ellipse rotation (NER) by means of a phase-sensitive method employing a dual-phase lock-in. The magnitudes and signs of pure refractive electronic nonlinearities of silica ...
Transport of localized and extended excitations in a nonlinear Anderson model
(1998)
We study the propagation of electrons (or excitations) through a one-dimensional tight-binding chain in the simultaneous presence of nonlinearity and diagonal disorder. The evolution of the system is given by a disordered ...
Nonlinear impurity in a square lattice
(1999)
We use the Green’s-function formalism for an exact, numerical calculation of the stationary states of an electron propagating in a square lattice in the presence of a single, Holstein-type, impurity of arbitrary nonlinearity ...
Two-color discrete localized modes and resonant scattering in arrays of nonlinear quadratic optical waveguides
(2005)
We analyze the properties and stability of two-color discrete localized modes in arrays of channel waveguides where tunable quadratic nonlinearity is introduced as a nonlinear defect by periodic poling of a single waveguide ...
Switching of discrete optical solitons in engineered waveguide arrays
(2004)
An effective method for controlling nonlinear switching of discrete solitons in arrays of weakly coupled optical waveguides was discussed. The key ideas of the array engineering by means of a steplike variation of the ...
Nonlinear impurity in a lattice: Dispersion effects
(2003)
We examine the bound state(s) associated with a single cubic nonlinear impurity, in a one-dimensional tight-binding lattice, where hopping to first- and second-nearest neighbors is allowed. The model is solved in a closed ...
Nonlinear surface impurity in a semi-infinite lattice
(2005)
We examine the formation of bound states on a generalized nonlinear impurity located at or near the beginning (surface) of a linear, tight-binding semi-infinite lattice. Using the formalism of lattice Green functions, we ...
Nonlinear surface impurity in a semi-infinite two-dimensional square lattice: Green function approach
(2006)
We examine the formation of localized states on a generalized nonlinear impurity located at or near the surface of a semi-infinite two-dimensional (2D) square lattice. Using the formalism of lattice Green functions, we ...
Universal features of self-trapping in nonlinear tight-binding lattices
(2000)
We use the discrete nonlinear Schrödinger (DNLS) equation to show that nonlinear tight-binding lattices of different geometries and dimensionalities display a universal self-trapping behavior. First, we consider the problem ...
Saturable impurity in an optical array: Green function approach
(American Physical Society, 2018)
© 2018 American Physical Society. We examine a one-dimensional linear waveguide array containing a single saturable waveguide. By using the formalism of lattice Green functions, we compute in closed form the localized mode ...