Letteratura scientifica selezionata sul tema "Bande photonique"
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Articoli di riviste sul tema "Bande photonique":
Provino, Laurent, Achille Monteville, David Landais, Olivier Le Goffic, Adil Haboucha, Thiery Taunay e David Mechin. "Les fibres microstructurées : 20 ans d’existence et un vaste éventail d’applications". Photoniques, n. 99 (novembre 2019): 40–44. http://dx.doi.org/10.1051/photon/20199940.
Astic, M., P. Barthelemy, D. Träger, L. Razzari, P. Delaye, R. Frey, R. André e G. Roosen. "Mélange à quatre ondes en bord de bande d'un cristal photonique 1D". Journal de Physique IV (Proceedings) 135, n. 1 (ottobre 2006): 93–95. http://dx.doi.org/10.1051/jp4:2006135014.
Zou, Q., B. E. Benkelfat e A. Ramdane. "Relation de type Kramers-Krönig dans une structure à bande interdite photonique périodique et unidimensionnelle". Journal de Physique IV (Proceedings) 119 (novembre 2004): 293–94. http://dx.doi.org/10.1051/jp4:2004119102.
Cassagne, D. "Matériaux à bandes interdites photoniques". Annales de Physique 23, n. 4 (1998): 1–91. http://dx.doi.org/10.1051/anphys:199804001.
Amo, Alberto, e Gaëtan Lévèque. "Comprendre la topologie photonique". Photoniques, n. 124 (2024): 54–58. http://dx.doi.org/10.1051/photon/202412454.
Le Floc'h, L., V. Quintard, J. F. Favennec e Y. Boucher. "Paramètres de répartition et bandes interdites d'un cristal photonique bidimensionnel discrétisé". Journal de Physique IV (Proceedings) 12, n. 5 (giugno 2002): 283–84. http://dx.doi.org/10.1051/jp4:20020162.
Tesi sul tema "Bande photonique":
Mafouana, Rodrigue Roland. "Elaboration des matériaux à bande interdite photonique". Université Louis Pasteur (Strasbourg) (1971-2008), 2006. https://publication-theses.unistra.fr/public/theses_doctorat/2006/MAFOUANA_Rodrigue_Roland_2006.pdf.
The first phase of the project was the development of the opals, particularly the preparation of colloid suspensions by the Stöber reaction. To achieve self-organization of the silica particles with a good quality, we worked on the refinement of the size distribution of the silica particles. We showed that, for our operational device, it is necessary for the reagents to be purified and moderated at 40°C then that the reaction is carried out under moderate agitation (500 tr. Min-1). The colloidal suspensions are stabilized by extraction of the particles and handing-over in suspension in water then by heating with 120°/30 min. The colloidal spheres internal structure shows nanoporosity. The opals were worked out by electrosedimentation and were consolidated at 950°C. The optimal optical properties, maximum reflectivity, were obtained for a 4 hours annealing. The second part of this work consisted in using the silica opal as preforms to infiltrate the porous network and to build inverse opals more promising in term of photonic crystals. We infiltrated the previous opals with materials having a strong index (TiO2, ZrO2, magnetics metals, Au) either by successive infiltrations cycles or by electrocrystallization. The second method gave the most satisfying results. The third part of this work is related to the development of a method to elaborate photonic crystal by depositing successive monolayers of silica particles. On a substrate good quality monolayers were obtained with colloidal suspensions containing between 5. 5 and 9 M of silica in the form of particles of approximately 300 nm and a speed of extraction of 11,5 mm. Min-1. These two-dimensional meta-crystals of hexagonal symmetry show a good of diffraction yield. On the other hand the quality of the following layers degrades quickly. The mechanical stability and great structure quality of the monolayer of silica balls on these substrates made possible their use for the 2D nanostructuration of metal studs and the realization of the DFB laser
Mafouana, Rodrigue Roland Estournes Claude Rehspringer Jean-Luc. "Elaboration des matériaux à bande interdite photonique". Strasbourg : Université Louis Pasteur, 2006. http://eprints-scd-ulp.u-strasbg.fr:8080/531/01/MAFOUANA2006.pdf.
Poilasne, Gregory. "Antennes et materiaux a bande interdite photonique (b. I. P. )". Rennes 1, 1999. http://www.theses.fr/1999REN10070.
Ferrand, Patrick. "Structures guidantes à bande interdite photonique à base de silicium nanoporeux". Phd thesis, Université Joseph Fourier (Grenoble), 2001. http://tel.archives-ouvertes.fr/tel-00003341.
Ferrand, Patrick. "Structures guidantes à bande interdite photonique à base de silicium nanoporeux". Phd thesis, Université Joseph Fourier (Grenoble ; 1971-2015), 2001. http://www.theses.fr/2001GRE10104.
Sérier, Cédric. "Conception, réalisation et caractérisation d'antenne à bande interdite photonique : application au fort gain". Limoges, 2002. http://www.theses.fr/2002LIMO0017.
This report is a study on photonic crystals, in order to use their properties to ceate P. B. G. Resonator antennas : Wideband 1D P. B. G. Resonator antenna : High gain 1D P. B. G. Resonator antenna : 3D P. B. G. Resonator antenna. More precisely, the different steps to design such antennas are presented as well as a study on the excitation of the structure by slot, which can replace patch antenna excitation
Pialat, Elodie. "Le Micro-usinage de dispositifs polymères à bande interdite photonique par faisceau d'ions". Limoges, 2004. http://aurore.unilim.fr/theses/nxfile/default/221048f5-8cc4-493d-9156-e51b053adce6/blobholder:0/2004LIMO0010.pdf.
. The increase in the data transmission traffic imposes innovations. A solution considered is the Wavelenght Demultiplexing Method (WDM) Devices with photonic band gap lend themselves advantageously to the implementation of this technique, since they do not require any consumption of energy. Their manufacture in polymeric technology is the subject of this study. The first part of this work gives a progress report on the bands structures and on the electronic Valence Band Density Of State (VBDOS) of the organic materials use. The following part is devoted to comprehension of the physical phenomena related to the concept of crystal photonic, according to the models of : Yablonovitch and John. Then the theory of the plane waves expansion is developped and used to compute the photonic band gap structures. The 4th part is about the calculation and the manufacture of a focused ion beam machine, with a minimum beam diameter of 10nm, used to etch polymers. The last part exposes the conditions to etch 2D diffractive lattice in PMMA and CR39 according to the previously calculated dimensions
Viale, Pierre. "Gestion des effets non linéaires dans les fibres optiques à bande interdite photonique". Limoges, 2006. http://aurore.unilim.fr/theses/nxfile/default/9a9c89be-3d7c-4b1d-8644-ee484619e0db/blobholder:0/2006LIMO0057.pdf.
Nonlinear effects in optical fibres were managed by means of photonic crystals (PC). On the one hand, such a metamaterial was employed to increase the threshold of appearance of nonlinear effects. Hence a silica core PC fibre exhibiting a large effective mode area was designed and fabricated. The subsequent characterization was studied in detail. Moreover, a properly designed PC allows propagation of light in a low index media such as air, which is a low nonlinear medium. Modelling of hollow core PC fibre was exposed together with our realizations and characterisations. On the other hand, specific properties of PC allow to propagate light in a highly-nonlinear low-index liquid filling the hollow core of a PC fibre so as to exacerbating nonlinear effects and creating novel optical sources. To the best of our knowledge, a low-loss liquid-core PC fibre was fabricated for the first time. A comprehensive theory of propagation was developed and confirmed by experiments
Vanvincq, Olivier. "Étude théorique des propriétés optiques linéaires et non-linéaires des fibres à bandes interdites photoniques à coeur solide". Thesis, Lille 1, 2011. http://www.theses.fr/2011LIL10036/document.
This thesis concerns the linear properties of solid-core photonic bandgap fibers and the use of their specific properties for guided non-linear optics.Part I focuses on optical properties of the core mode whose guidance mechanism is related to the photonic bandgaps of the microstructured cladding. A numerical tool is developed for bandgap calculation using the plane wave expansion method with the dispersion taken into account. This tool was used for the design of a fiber which allows the photo-writing of a Bragg grating. Then, the stationary perturbation method is applied to the determination of the effective index of the allowed modes at long wavelengths and to the identification of linearly polarized modes towards which they evolve.In part II, the generalized non-linear Schrödinger equation is established. In the case of a tapered fiber, an extra-term appears in the equation allowing the exact conservation of the photons number. Then, the principles of the soliton red-shift and supercontinuum generation are recalled. The usual analytical expression of soliton self-frequency shift rate is extended to the case of short-duration solitons which play an important part in the dynamics of supercontinuum generation.Part III focuses on results obtained in nonlinear regime in solid-core photonic bandgap fibers. We show that the strong value of the third order dispersion term is the cause of the soliton self-frequency shift suppression near the bandgap edge without significant energy loss. Then, this suppression was used to tailor the spectral extent of the supercontinuum and to reduce pulse-to-pulse fluctuations
Fehrembach, Anne-Laure. "Réseaux résonnants à Bande Interdite Photonique, nouveaux filtres pour le D. W. D. M". Aix-Marseille 3, 2003. http://www.theses.fr/2003AIX30028.
Dense wavelength division multiplexing (D. W. D. M. ) significantly increases the optical telecommunication transmission rates. To separate the channels, narrow band spectral filters are necessary. Resonant gratings, composed with a grating engraved on a planar waveguide, are a potential solution. These structures support eigenmodes, which can be excited by a wave coming out of an optical fiber. The excitation creates a resonance peak in the reflected beam, for a given wavelength and incidence angle. In general, the peak does not exhibit the qualities required for the D. W. D. M. : at oblique incidence, the angular and spectral tolerances are weak, and the line shapes are polarization dependent. Combining photonic crystals concepts, a rigorous phenomenological theory, and a perturbative theory, we design a filter that meet all the conditions imposed by the D. W. D. M.
Capitoli di libri sul tema "Bande photonique":
BRÜCKERHOFF-PLÜCKELMANN, Frank, Johannes FELDMANN e Wolfram PERNICE. "Les puces photoniques". In Au-delà du CMOS, 395–422. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9127.ch9.