Dissertations / Theses on the topic 'Discret soliton'
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Lechevalier, Corentin. "Structure des bandes, états propres et dynamique non linéaire dans un réseau photonique fibré." Electronic Thesis or Diss., Université de Lille (2022-....), 2022. http://www.theses.fr/2022ULILR070.
The subject of this manuscript's research is based on the characterization the dynamics of light in a photonic lattice. Photonic lattice are platform where light can propagate and be precisely analysed. The photonic lattice studied is formed by two fiber coupled ring. The evolution of light inside the lattice is fully describe by one relation. This one is especially challenging to be measured in a single measure. In our study, we propose to measure the complet relation into a single measure thanks to an add-on device.When the relation is observed, we analyze its structure to describe fundamental propreties of the lattice. Our experimental device offer the possibility to measure various relation but moreover complex physical phenomena such as high pulses formation, coherents structures or pulses interactions
Suntsov, Sergiy. "DISCRETE SURFACE SOLITONS." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2901.
Ph.D.
Optics and Photonics
Optics and Photonics
Optics PhD
Morandotti, Roberto. "Discrete optical solitons." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300979.
Hudock, Jared. "OPTICAL WAVE PROPAGATION IN DISCRETE WAVEGUIDE ARRAYS." Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4119.
Ph.D.
Other
Optics and Photonics
Optics
Syafwan, Mahdhivan. "The existence and stability of solitons in discrete nonlinear Schrödinger equations." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12916/.
Meier, Joachim. "DISCRETE NONLINEAR WAVE PROPAGATION IN KERR NONLINEAR MEDIA." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2900.
Ph.D.
Other
Optics and Photonics
Optics
Zhu, Zuonong. "Lax representations, Hamiltonian structures, infinite conservation laws and integrable discretization for some discrete soliton systems." HKBU Institutional Repository, 2000. http://repository.hkbu.edu.hk/etd_ra/270.
Iwanow, Robert. "DISCRETE WAVE PROPAGATION IN QUADRATICALLY NONLINEAR MEDIA." Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2904.
Ph.D.
Other
Optics and Photonics
Optics
Leschhorn, Günther. "Time-resolved measurements on a single molecular target and Discrete Kink Solitons in Ion traps." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-139027.
Lundgren, Martin. "Bending, Twisting and Turning : Protein Modeling and Visualization from a Gauge-Invariance Viewpoint." Doctoral thesis, Uppsala universitet, Teoretisk fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-172358.
Shek, Cheuk-man Edmond. "The continuous and discrete extended Korteweg-de Vries equations and their applications in hydrodynamics and lattice dynamics." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36925585.
Leschhorn, Günther [Verfasser], and Tobias [Akademischer Betreuer] Schätz. "Time-resolved measurements on a single molecular target and Discrete Kink Solitons in Ion traps / Günther Leschhorn. Betreuer: Tobias Schätz." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1019479159/34.
Shek, Cheuk-man Edmond, and 石焯文. "The continuous and discrete extended Korteweg-de Vries equations and their applications in hydrodynamics and lattice dynamics." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36925585.
Souche, Estelle. "Quasi-isométries et quasi-plans dans l'étude des groupes discrets." Aix-Marseille 1, 2001. http://www.theses.fr/2001AIX11048.
Claude, Christophe. "Extensions et applications de la méthode spectrale aux systèmes discrets et aux systèmes couplés." Montpellier 2, 1993. http://www.theses.fr/1993MON20084.
Moraes, Ines Ferreira. "Uma metodologia unificada no domínio tempo para sistemas concentrados, discretos e distribuídos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2002. http://hdl.handle.net/10183/2630.
The impulse response is employed as a standard tool for a direct study of concentrated, discrete and distributed systems of arbitrary order. This approach leads to the development o f a unified platform for obtaining dynamical responses. In particular, forced responses are decomposed into the sum of a permanent response and a free response induced by the initial values of the permanent solution. The theory is developed in a general manner for n-th order systems; being introduced the standard dynamical basis generated by the impulse response and the normalized one, without employing the state formulation, through which a higher-order system is reduced to a first-order system. In order to follow the many results found in the literature through the state space formulation, first-order systems were considered. The methods for computing the impulse response were classified into spectral, non spectral and numeric. Emphasis was given to non spectral methods, because the impulse response has a closed-form formula that requires the use of three characteristic equations of algebraic, differential and difference type. Numerical simulations were performed with classical and non classical vibrating models. The systems considered were concentrated, discrete and distributed. The decomposition results of the forced response of concentrated systems subject to harmonic and non harmonic loads were worked out in detail. The decomposition for the discrete case was developed by using the numerical integration schemes of Adams-Basforth, Strõmer and Numerov. For distributed systems was considered the Euler-Bernoulli model with an axial force subject to oscillating inputs with triangular, pulse and harmonic amplitude. The permanent solutions were computed with the spatial Green function. The impulse response was approximated with the spectral method.
Butler, Samuel Thomas James. "Inverse Scattering Transform Method for Lattice Equations." Thesis, The University of Sydney, 2012. http://hdl.handle.net/2123/8724.
García, March Miguel Ángel. "Modelización y simulación de dispositivos micrométricos basados en estructuras espaciales de solitones ópticos." Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/2011.
García March, MÁ. (2008). Modelización y simulación de dispositivos micrométricos basados en estructuras espaciales de solitones ópticos [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/2011
Palancia
Kroon, Lars. "Spectra and Dynamics of Excitattions in Long-Range Correlated Strucutures." Doctoral thesis, Linköpings universitet, Teoretisk Fysik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9727.
Spectral and dynamical properties of electrons, phonons, electromagnetic waves, and nonlinear coherent excitations in one-dimensional modulated structures with long-range correlations are investigated from a theoretical point of view. First a proof of singular continuous electron spectrum for the tight-binding Schrödinger equation with an on-site potential, which, in analogy with a random potential, has an absolutely continuous correlation measure, is given. The critical behavior of such a localization phenomenon manifests in anomalous diffusion for the time-evolution of electronic wave packets. Spectral characterization of elastic vibrations in aperiodically ordered diatomic chains in the harmonic approximation is achieved through a dynamical system induced by the trace maps of renormalized transfer matrices. These results suggest that the zero Lebesgue measure Cantor-set spectrum (without eigenvalues) of the Fibonacci model for a quasicrystal is generic for deterministic aperiodic superlattices, for which the modulations take values via substitution rules on finite sets, independent of the correlation measure. Secondly, a method to synthesize and analyze discrete systems with prescribed long-range correlated disorder based on the conditional probability function of an additive Markov chain is effectively implemented. Complex gratings (artificial solids) that simultaneously display given characteristics of quasiperiodic crystals and amorphous solids on the Fraunhofer diffraction are designated. A mobility edge within second order perturbation theory of the tight-binding Schrödinger equation with a correlated disorder in the dichotomic potential realizes the success of the method in designing window filters with specific spectral components. The phenomenon of self-localization in lattice dynamical systems is a subject of interest in various physical disciplines. Lattice solitons are studied using the discrete nonlinear Schrödinger equation with on-site potential, modeling coherent structures in, for example, photonic crystals. The instability-induced dynamics of the localized gap soliton is found to thermalize according to the Gibbsian equilibrium distribution, while the spontaneous formation of persisting intrinsic localized modes from the extended out-gap soliton reveals a phase transition of the solution.
Wang, Shao-Chuan, and 王紹權. "Discrete Optical Soliton in a Waveguide Array- Controlled Soliton Interactions and Suppressed Symmetry Breaking by Incoherence." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/07062681605853075172.
國立臺灣大學
物理研究所
95
Periodic systems are ubiquitous in nature and are known to exhibit behaviors that differ fundamentally from those of homogenous systems. Among all periodic systems, optical waveguide array opens a wide door for investigating the dynamics in nonlinear periodic systems for its adaptability and controllability of light. Self-localized modes in periodically modulated structures, or discrete solitons, form when the broadening effects (discrete diffraction) and the nonlinear effects are balanced. Many properties about the wave propagation in the (nonlinear) periodic systems are demonstrated in this thesis, such as anomalous diffraction, diffraction-free propagation, and staggered and unstaggered modes. This thesis mainly focus on two topics: discrete soliton interactions and symmetry breaking of even discrete solitons. Since one of the most intriguing phenomena in the nonlinear optics is the soliton interaction, we perform numerical simulations of the discrete soliton interactions, and study the threefold interplay between statistical properties (coherence), the periodic refractive index, and the nonlinear effects. We show that when the two beams are made partially incoherent, the interaction force will become much weaker, and this result is similar to the previous study, done by T.S. Ku, that focuses on the coherence-controlled soliton interactions in the homogenous nonlinear media. In the final section, we discuss the symmetry breaking instability of discrete solitons with even parity and show how incoherence can suppress the instability.
Wang, Shao-Chuan. "Discrete Optical Soliton in a Waveguide Array - Controlled Soliton Interactions and Suppressed Symmetry Breaking by Incoherence." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-1607200717515900.
Stepić, Milutin [Verfasser]. "Discrete solitons in media with saturable nonlinearity / by Milutin Stepić." 2005. http://d-nb.info/973918527/34.
Hennig, Holger. "Scale-free Fluctuations in in Bose-Einstein Condensates, Quantum Dots and Music Rhythms." Doctoral thesis, 2009. http://hdl.handle.net/11858/00-1735-0000-0006-B4C1-5.