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Littérature scientifique sur le sujet « Multimode light »

Auteur : Grafiati

Publié le 1 avril 2023

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Articles de revues sur le sujet "Multimode light"

Taylor, D. Lansing. « Multimode light microscopy ». Fresenius' Journal of Analytical Chemistry 343, n^o 1 (1992) : 38. http://dx.doi.org/10.1007/bf00331979.

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Piccardo, Marco, Vincent Ginis, Andrew Forbes, Simon Mahler, Asher A. Friesem, Nir Davidson, Haoran Ren et al. « Roadmap on multimode light shaping ». Journal of Optics 24, n^o 1 (16 décembre 2021) : 013001. http://dx.doi.org/10.1088/2040-8986/ac3a9d.

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Abstract Our ability to generate new distributions of light has been remarkably enhanced in recent years. At the most fundamental level, these light patterns are obtained by ingeniously combining different electromagnetic modes. Interestingly, the modal superposition occurs in the spatial, temporal as well as spatio-temporal domain. This generalized concept of structured light is being applied across the entire spectrum of optics: generating classical and quantum states of light, harnessing linear and nonlinear light-matter interactions, and advancing applications in microscopy, spectroscopy, holography, communication, and synchronization. This Roadmap highlights the common roots of these different techniques and thus establishes links between research areas that complement each other seamlessly. We provide an overview of all these areas, their backgrounds, current research, and future developments. We highlight the power of multimodal light manipulation and want to inspire new eclectic approaches in this vibrant research community.

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Guzman-Sepulveda, J. R., et A. Dogariu. « Multimode interference dynamic light scattering ». Optics Letters 43, n^o 17 (28 août 2018) : 4232. http://dx.doi.org/10.1364/ol.43.004232.

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Chihua Zhou, Chihua Zhou, Changchun Zhang Changchun Zhang, Hongbo Liu Hongbo Liu, Kui Liu Kui Liu, Hengxin Sun Hengxin Sun et Jiangrui Gao Jiangrui Gao. « Generation of temporal multimode squeezed states of femtosecond pulse light ». Chinese Optics Letters 15, n^o 9 (2017) : 092703. http://dx.doi.org/10.3788/col201715.092703.

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Karassiov, V. P., et S. P. Kulik. « Polarization transformations of multimode light fields ». Journal of Experimental and Theoretical Physics 104, n^o 1 (février 2007) : 30–46. http://dx.doi.org/10.1134/s1063776107010049.

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Zhong, Tianting, Zhipeng Yu, Huanhao Li, Zihao Li, Haohong Li et Puxiang Lai. « Active wavefront shaping for controlling and improving multimode fiber sensor ». Journal of Innovative Optical Health Sciences 12, n^o 04 (juillet 2019) : 1942007. http://dx.doi.org/10.1142/s1793545819420070.

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Wavefront shaping (WFS) techniques have been used as a powerful tool to control light propagation in complex media, including multimode fibers. In this paper, we propose a new application of WFS for multimode fiber-based sensors. The use of a single multimode fiber alone, without any special fabrication, as a sensor based on the light intensity variations is not an easy task. The twist effect on multimode fiber is used as an example herein. Experimental results show that light intensity through the multimode fiber shows no direct relationship with the twist angle, but the correlation coefficient (CC) of speckle patterns does. Moreover, if WFS is applied to transform the spatially seemingly random light pattern at the exit of the multimode fiber into an optical focus. The focal pattern correlation and intensity both can serve to gauge the twist angle, with doubled measurement range and allowance of using a fast point detector to provide the feedback. With further development, WFS may find potentials to facilitate the development of multimode fiber-based sensors in a variety of scenarios.

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He, Zhicong, Cheng Xu, Wenhao He, Jinhu He, Yunpeng Zhou et Fang Li. « Principle and Applications of Multimode Strong Coupling Based on Surface Plasmons ». Nanomaterials 12, n^o 8 (7 avril 2022) : 1242. http://dx.doi.org/10.3390/nano12081242.

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In the past decade, strong coupling between light and matter has transitioned from a theoretical idea to an experimental reality. This represents a new field of quantum light–matter interaction, which makes the coupling strength comparable to the transition frequencies in the system. In addition, the achievement of multimode strong coupling has led to such applications as quantum information processing, lasers, and quantum sensors. This paper introduces the theoretical principle of multimode strong coupling based on surface plasmons and reviews the research related to the multimode interactions between light and matter. Perspectives on the future development of plasmonic multimode coupling are also discussed.

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Wang, Xinyi, Longfei Yin, Guohua Wu, Bin Luo et Pengqi Yin. « Research on Resolution Enhancement Technology of Orthogonal Multimode Fiber Imaging ». Journal of Physics : Conference Series 2242, n^o 1 (1 avril 2022) : 012004. http://dx.doi.org/10.1088/1742-6596/2242/1/012004.

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Abstract This paper presents a new scheme to improve the imaging resolution of optical fiber endoscope. Multimode fiber imaging is combined with correlation imaging experimental architecture, and Schmidt orthogonalization algorithm is used to reduce the correlation of light field. The simulation and experimental results show that this scheme can greatly improve the imaging quality and resolution, especially in the case of under sampling. In addition, the scheme can also resist the low resolution problem caused by the light field divergence of multimode fiber correlation imaging, and when the light field divergence reaches a certain extent, the resolution of the orthogonalized multimode fiber light field will no longer be affected. The feasibility of orthogonal multimode fiber imaging scheme in large depth of field is verified.

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Liu, Ying, Ruo-Nan Kang, Bin Wang, Fei-Fei Guo, Kun Du, Dan-Dan Kou et Chun-Rui Chang. « Study on the characteristic of light transmission in a single-multimode fiber ». International Journal of Modern Physics B 34, n^o 10 (20 avril 2020) : 2050098. http://dx.doi.org/10.1142/s0217979220500988.

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Based upon the optical coherence superposition principle, a system to acquire light transmitted by a single-multimode fiber has been built. By collecting the optical interference images and using MATLAB software for analysis, the target light transmitted by a single-multimode optical fiber can be extracted from it. Thus, the transmission characteristics of light in a single-multimode optical fiber can be obtained, aiming to realize the direct transmission imaging through the multimode optical fiber by the compensation principle according to the change of phase in the transmission process and to provide technical support for the development of medical examination and medical devices in China.

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Devet’yarov, D. R., M. A. Eron’yan, A. Yu Kulesh, I. K. Meshkovskii et K. V. Dukel’skii. « Radiation-Resistant Germanosilicate Multimode Fiber Light Guides ». Glass Physics and Chemistry 48, n^o 4 (août 2022) : 303–7. http://dx.doi.org/10.1134/s108765962204006x.

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Thèses sur le sujet "Multimode light"

Wang, Qi. « Studies of multimode fibre linked white light interferometric sensor systems ». Thesis, City University London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389649.

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Zheng, Zhan. « Two-photon--two-atom excitation with quantum multimode light states ». Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066589/document.

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Deux photons - deux atomes (2P2A) excitation s’avère être un banc de test importantde propriétés optiques quantiques. Depuis 1980, on sait que la probabilité de transition2P2A peut être grandement améliorée en utilisant la source monochromatique cohérenteavec la présence d’interactions atomiques qui induisent un pic de résonance de 2P2A. En2004 , Muthukrishnan et al. sont trouvés une grande amélioration de la transition ainsique d’une résonance de 2P2A, quand une source de deux photons intriqués, provenant dela radiation d’un atome cascade à trois niveaux, interagit avec les deux atomes différentsde l’ interaction. Leur conclusion est que : dans certaines situations, l’intrication peutremplacer un vrai hamiltonien d’interaction, qui est une déclaration de grande portée etune propriété importante liée à l’intrication. Ce phénomène mérite plus d’attention et defavoriser la compréhension
Two-photonÐtwo-atom (2P2A) excitation turns out to be an important test bench of quantum optical properties. In 2004, Muthukrishnan et al. announced a great enhancement of the transition at 2P2A resonance, when an entangled two-photon state, coming from a three-level cascade, interacts with two non-interacting atoms. Their conclusion: in some situations, entanglement can replace a real interaction Hamiltonian, reveals an important property related to entanglement. In this thesis, We study in detail the efficiency of various multimode two-photon states of light to induce the simultaneous excitation of two atoms of different kinds under 2P2A resonance condition. We find that several separable, correlated states, produced either by an atomic cascade or parametric down-conversion, or even appropriate combinations of coherent states, have comparable efficiencies as the photon state produced by an atomic cascade. We conclude that the true physical origin of the enhancement is the frequency anti-correlations, neither the temporal correlations, time ordering, nor entanglement. To present, we are not sure whether or not the enhancement is a quantum effect. We also studied: 1. the optimized 2P2A transition probability for a given photon spectrum; 2. the influence coming from finite lifetimes of the excited detecting atoms; 3. the 2P2A transition probability in the presence of atomic interaction

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Ning, Ya Nong. « A study of optical fibre interferometric systems using multimode laser diode light sources ». Thesis, City University London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316037.

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Wickenbrock, A. « Cold atoms in light fields : from free space optical lattices to multimode optical cavities ». Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1349525/.

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The electromagnetic mode density of the vacuum can be dramatically modified by the presence of an optical resonator. In the strong coupling regime, spontaneous emission in a cavity becomes a reversible process and the intracavity photon number undergoes Rabi oscillations. We load up to 200x10^3 ^133Cs atoms into a nearly confocal lossy cavity and reach the collective strong coupling regime. Normal mode splitting, the hallmark of this regime, is observed and cooperativities up to C_coll = (186±5) are measured. In a second experiment we investigate for the first time the multi-mode character of the coupled cavity-atom system. In a confocal cavity the higher-order transverse cavity modes are degenerate in frequency and accessible to the spontaneous emission of the atomic ensemble. We observe an increase of the coupling constant measured via modal decomposed transmission analysis, which could be attributed to the presence of the higher-order modes. Normal mode splitting proportional to the square root of the atom number was visible for all of the different mode components. Furthermore, we observe a redistribution of the relative weights in the modal transmission composition, which scales with the atom number in the cavity mode. In a second set of experiments, ^87Rb atoms were loaded into a dissipative lin ⊥ lin lattice. By driving the lattice with a biharmonic force, transport can be observed when the systems symmetries are broken: the so called ratchet effect. Research in this area is concerned with the appearance of current reversals. We were able to identify dissipation related symmetry breaking as the underlying cause of an observed current reversal, which occurs as a function of the driving frequency. Furthermore, in a second experiment, we use the ratchet effect as a probe of the optical potential depths. We show that an oscillating force with a frequency far above any other system-inherent timescale, can be used to renormalize the optical potential. The ^87Rb atoms experience an average position dependent force, which becomes controllable over the amplitude of the applied driving.

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Leedumrongwatthanakun, Saroch. « Quantum information processing with a multimode fibre ». Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS526.

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Le transport à haut débit de données à travers des fibres optiques grâce au multiplexage spatial est en pratique limité par la diaphonie modale. Au lieu de considérer ce couplage modal comme une limitation, nous exploitons ici ce mélange de modes comme une ressource. Nous mettons en oeuvre un réseau optique linéaire programmable basé sur le concept de design photonique inverse, exploitant les techniques de mise en forme du front d’onde. Nous démontrons la manipulation d’interférences quantiques à deux photons sur divers réseaux linéaires, comprenant des degrés de liberté spatiaux et de polarisations. En particulier, nous vérifions expérimentalement la « zero transmission law » dans des interféromètres de Fourier et de Sylvester, permettant de quantifier le degré d’indiscernabilité d’un état d’entrée. De plus, grâce à la possibilité de mettre en oeuvre un réseau non unitaire, nous mettons en évidence l’anti-coalescence de photons dans toutes les configurations de sortie, et réalisons une expérience d’absorption cohérente. Nous démontrons ainsi l’aspect reconfigurable de l’implémentation de tels réseaux optiques linéaires dans des fibres multimodes. De plus, nous étudions les propriétés statistiques du speckle à un et à deux photons générés à partir de divers états d’entrée, après propagation dans une fibre multimode. Ces propriétés statistiques du speckle peuvent être utilisées pour extraire des informations sur la dimensionnalité, la pureté et l’indiscernabilité d’un état quantique inconnu, permettant ainsi leur classification. Ce travail met en évidence le potentiel du contrôle de front d’onde en milieux complexes pour le traitement quantique de l’information
Transport of information through a multimode optical fibre raises challenges when one wants to increase the data traffic using many spatial modes due to modal cross-talk and dispersion. Instead of considering those complex mixing of modes as a detrimental process, in this dissertation, we harness its mode mixing to process quantum optical information. We implement a reconfigurable linear optical network, a fundamental building block for scalable quantum technologies, based on an inverse photonic approach exploiting the technology of wavefront shaping. We experimentally demonstrate manipulation of two-photon quantum interference on various linear optical networks across both spatial and polarization degrees of freedom. In particular, we experimentally show the zero-transmission law in Fourier and Sylvester interferometers, which are used to certificate the degree of indistinguishability of an input state. Moreover, thanks to the ability to implement a non-unitary network, we observe the photon anti-coalescence effect in all output configurations, as well as the realization of a tunable coherent absorption experiment. Therefore, we demonstrate the reconfigurability, accuracy, scalability and robustness of the implemented linear optical networks for quantum information processing. Furthermore, we study the statistical properties of one-and two-photon speckles generated from various ground-truth states of light after propagating through a multimode fibre. These statistical properties of speckles can be used to extract information about the dimensionality, purity, and indistinguishability of an unknown input state of light, therefore allowing for state classification. Our results highlight the potential of complex media combined with wavefront shaping for quantum information processing

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Heinrich, Georg [Verfasser], et Florian [Akademischer Betreuer] Marquardt. « Nanomechanics interacting with light : Dynamics of coupled multimode optomechanical systems / Georg Heinrich. Betreuer : Florian Marquardt ». Erlangen : Universitätsbibliothek der Universität Erlangen-Nürnberg, 2011. http://d-nb.info/101763923X/34.

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Neo, Poh Ling. « Increasing the transmission capacities of a multimode fibre transmission link using a spatial light modulator ». Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612421.

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Chille, Vanessa. « Quantum optics with structured light ». Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066358/document.

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La présente thèse a pour objectif d'analyser la lumière structurée non-classique et ses caractéristiques. L'optique quantique et la lumière structurée sont deux sujets qui font l'objet d'examens nombreux. Ils sont néanmoins rarement examinés en combinaison. Les propriétés quantiques de la lumière structurée sont moins bien étudiées qu'ils devraient l'être. Par la lumière structurée nous entendons les champs lumineux qui montrent une structure transverse complexe de l'intensité, la phase ou la polarisation. Nous voulons lier les deux sujets de l'optique quantique et la lumière structurée dans la présente thèse. Dans ce but, nous générons expérimentalement des champs lumineux structurés non-classiques. En particulier, nous réalisons une expérience qui permet de générer des faisceaux vectoriels vectoriels - c'est-à-dire des faisceaux lumineux dont l'état de polarisation présente une structure transverse complexe - qui montrent une réduction du bruit quantique. En outre, nous étudions théoriquement les propriétés spatiales de faisceaux lumineux, ainsi que leur bruit. Plus spécifiquement, nous analysons l'incertitude quantique dans la largeur d'un faisceau lumineux. Pour prouver la faisabilité de la vérification expérimentales de nos résultats théoriques, nous réalisons des simulations pour la mesure de paramètres spatiales utilisant un détecteur mulitpixels
This thesis aims at learning more about nonclassical structured light. Quantum optics and structured light are two topics that are subject to countless scientific examinations. However, they are very rarely combined and the quantum properties of structured light are not as thoroughly studied as they deserve. By structured light, we mean any light fields with complex transverse distributions of intensity, phase or polarization. We want to link the topics of quantum optics and structured light in this thesis. For this purpose, we experimentally generate particular nonclassical structured light fields. In particular, we construct an experimental setup that enables us, in principle, to produce arbitrary amplitude squeezed vector beams, i.e. light beams with a complex transverse structure of the state of polarization. Furthermore, we analyze spatial properties of light beams, and their quantum noise theoretically. We specifically perform theoretical examinations of the quantum noise in the width of a light beam. To show the feasibility of an experimental verification of our theoretical results, we conduct simulations for the measurement of spatial parameters of a beam's cross-section by a multipixel detector

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Zhao, Xin. « Study of Multimode Extrinsic Fabry-Perot Interferometric Fiber Optic Sensor on Biosensing ». Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/34534.

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The electrostatic self-assembly (ESA) method presents an effective application in the field of biosensing due to the uniform nanoscale structure. In previous research, a single mode fiber (SMF) sensor system had been investigated for the thin-film measurement due to the high fringe visibility. However, compared with a SMF sensor system, a multimode fiber (MMF) sensor system is lower-cost and has larger sensing area (the fiber core), providing the potential for higher sensing efficiency.

In this thesis, a multimode fiber-optic sensor has been developed based on extrinsic Fabry-Perot interferometry (EFPI) for the measurement of optical thickness in self-assembled thin film layers as well as for the immunosensing test. The sensor was fabricated by connecting a multimode fiber (MMF) and a silica wafer. A Fabry-Perot cavity was formed by the reflections from the two interfaces of the wafer. The negatively charged silica wafer could be used as the substrate for the thin film immobilization scheme. The sensor is incorporated into the white-light interferometric system. By monitoring the optical cavity length increment, the self-assembled thin film thickness was measured; the immunoreaction between immunoglobulin G (IgG) and anti-IgG was investigated.
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Czarske, Jürgen W., Daniel Haufe, Nektarios Koukourakis et Lars Büttner. « Perspectives of multimode fibers and digital holography for optogenetics ». SPIE, 2016. https://tud.qucosa.de/id/qucosa%3A34836.

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Optogenetic approaches allow the activation or inhibition of genetically prescribed populations of neurons by light. In principle, optogenetics offers not only the ability to elucidate the functions of neural circuitry, but also new approaches to a treatment of neurodegenerative diseases and recovery of vision and auditory perception. Optogenetics already has revolutionized research in neuroscience. However, new methods for delivering light to three-dimensionally distributed structures e.g. in the brain are necessary. A major hurdle for focusing light through biological tissue is the occurring scattering and scrambling of the light. We demonstrate the correction of the scrambling in a multimode fiber by digital optical phase conjugation with a perspective for ptogenetics.

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Livres sur le sujet "Multimode light"

Rossi, Simone, Stefano F. Cappa et Paolo Maria Rossini. Higher cognitive functions : memory and reasoning. Sous la direction de Charles M. Epstein, Eric M. Wassermann et Ulf Ziemann. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780198568926.013.0032.

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Transcranial magnetic stimulation (TMS) is a sophisticated approach for interfering with human memory and reasoning due to its ability to transiently interfere with the functions of the specialized cortical network, especially when applied as repetitive (r)TMS. This article reviews TMS studies dealing with short-term retention, working memory, and with the episodic component of declarative memory. It also considers certain aspects of semantic memory and nonverbal reasoning. Furthermore, it discusses methodological considerations about the experimental designs, which can be used for the investigation of human cognitive functions. This article emphasizes the fact that higher cognitive functions provide an example as to how underlying physiological mechanisms cannot be fully disclosed by investigations based on a single technique. Studies to develop a true multimodal approach are being undertaken. In this light, behavioural interference studies will gain new power in combination with disruptive and correlational methodologies, establishing causality in a more sophisticated manner.

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Yu, Ning. The Moral Metaphor System. Oxford University PressOxford, 2022. http://dx.doi.org/10.1093/oso/9780192866325.001.0001.

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Abstract This book presents a study of moral metaphors in English and Chinese, applying cognitive linguistics’ conceptual metaphor theory (CMT) to a comparative study of linguistic manifestation of the moral metaphor system rooted in the domains of bodily and physical experience. It intends to shed light on the metaphorical nature of moral cognition and how it is systematically manifested in language. The study sets out with the central goal to contribute to the discovery of potential commonalities that define moral cognition in general as well as the detection of possible differences that characterize distinct cultures concerning moral cognition. It probes into moral cognition at the cultural level as reflected in language, based on linguistic evidence from both English and Chinese and, to a limited extent, multimodal evidence from the corresponding cultures. The moral metaphor system under study is taken as consisting of three major subsystems, named in a shorthand fashion as “physical”, “visual”, and “spatial”. The three subsystems are clusters of conceptual metaphors, whose source concepts are from domains of embodied experiences in the physical world, and which are formulated in contrastive categories with bipolar values for the target concepts moral and immoral. The study is characterized by two keywords: system and systematicity. The former refers to the fact that metaphors (conceptual and linguistic) are connected in networks; the latter refers to the need that metaphors should be studied in such networks.

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Chapitres de livres sur le sujet "Multimode light"

Buratti, P., et M. Zerbini. « Multimode Light Collection Systems for ECE Diagnostics ». Dans Diagnostics for Experimental Thermonuclear Fusion Reactors, 211–14. Boston, MA : Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0369-5_25.

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Bosselmann, T. « Multimode-Fiber Coupled White-Light Interferometric Position Sensor ». Dans Optical Fiber Sensors, 429–32. Dordrecht : Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3611-9_28.

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Kühn, H., W. Vogel et D. G. Welsch. « Multiport Homodyning for Reconstructing Multimode Quantum States of Light ». Dans Coherence and Quantum Optics VII, 427–28. Boston, MA : Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9742-8_87.

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Wöllert, Torsten, et George M. Langford. « High Resolution Multimode Light Microscopy of Cell Migration : Long-Term Imaging and Analysis ». Dans Cytoskeleton Methods and Protocols, 3–21. Totowa, NJ : Humana Press, 2009. http://dx.doi.org/10.1007/978-1-60761-376-3_1.

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Doan, Thi Kim Dung. « Multimodal Imaging with NIR Light ». Dans Transparency in Biology, 223–63. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-9627-8_11.

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Kita, Yui, et Jun Rekimoto. « Spot-Light : Multimodal Projection Mapping on Food ». Dans Communications in Computer and Information Science, 652–55. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39476-8_131.

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Borisova, Ekaterina G., et Petranka Troyanova. « Diagnostics of Pigmented Skin Tumors Based on Light-Induced Autofluorescence and Diffuse Reflectance Spectroscopy ». Dans Multimodal Optical Diagnostics of Cancer, 245–70. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44594-2_7.

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Dennig, Hans-Jörg, Adrian Burri et Philipp Ganz. « BICAR—Urban Light Electric Vehicle ». Dans Small Electric Vehicles, 157–66. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65843-4_12.

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AbstractThis paper describes the technical features of the light electric vehicle (L2e-category) named BICAR. This specially designed vehicle is an all-in-one emissions-free micro-mobility solution providing a cost-effective and sustainable mobility system while supporting the transition towards a low carbon society (smart and sustainable city concept). The BICAR represents part of a multimodal system, complementing public transport with comfort and safety, relieving inner-city congestion and solving the “first and last mile” issue. The BICAR is the lightest and smallest three-wheel vehicle with weather protection. Due to the space-saving design, six to nine BICARS will fit into a single standard parking space. Safety is increased by an elevated driving position and a tilting mechanism when cornering. The BICAR achieves a range of 40–60 km depending on the battery package configuration in urban transport at a speed of 45 km/h. It features a luggage storage place and exchangeable, rechargeable batteries. The BICAR can be driven without a helmet thanks to the safety belt system, which is engineered for street approved tests. The BICAR has an integrated telematic box connected to the vehicle electronics and communicating with the dedicated mobile application, through which the BICAR can be geo-localised, reserved, locked/unlocked and remotely maintained.

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Nasta, Dominique, et Bart G. Moens. « Religious Temperance Propaganda and Multimodal Aesthetics of Emotion. The Lantern Slide Set ‘Un poison mortel’ and Early Film Adaptations of Émile Zola’s L’Assommoir ». Dans Faith in a Beam of Light, 155–68. Turnhout, Belgium : Brepols Publishers, 2022. http://dx.doi.org/10.1484/m.techne-mph-eb.5.129101.

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Dynel, Marta. « When Both Utterances and Appearances are Deceptive : Deception in Multimodal Film Narrative ». Dans Perspectives in Pragmatics, Philosophy & ; Psychology, 205–52. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-56696-8_12.

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AbstractThis article gives a comprehensive theoretical account of deception in multimodal film narrative in the light of the pragmatics of film discourse, the cognitive philosophy of film, multimodal analysis, studies of fictional narrative and – last but not least – the philosophy of lying and deception. Critically addressing the extant literature, a range or pertinent notions and issues are examined: multimodality, film narration and the status of the cinematic narrator, the pragmatics of film construction (notably, the characters’ communicative level and the one of the collective sender and the recipient), the fictional world and its truth, the recipient’s film engagement and make believing, as well as narrative unreliability. Previous accounts of deceptive films are revisited and three main types of film deception are proposed with regard to the two levels of communication on which it materialises, the characters’ level and the recipient’s level, as well as the intradiegetic and/or the extradiegetic narrator involved. This discussion is illustrated with multimodally transcribed examples of deception extracted from the American television seriesHouse.In the course of the analysis, attention is paid to how specific types of deception detailed in the philosophy of language (notably, lies, deceptive implicature, withholding information, covert ambiguity, and covert irrelevance) are deployed through multimodal means in the three types of film deception (extradiegetic deception, intradiegetic deception, and a combination of both when performed by both cinematic and intradiegetic narrators). Finally, inspired by the discussion of Hitchcock’s controversial lying flashback scene inStage Fright, as well as films relying on tacit intradiegetic, unreliable narrators (focalising characters) an attempt is made to answer the thorny question of when the extradiegetic (cinematic) narrator can perform lies (through mendacious multimodal assertions) addressed by the collective sender to the recipient, and not just only other forms of deception, as is commonly maintained.

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Actes de conférences sur le sujet "Multimode light"

El-Sherif, Mahmoud A. « Spatial Light Modulators in Multimode Fibers ». Dans Spatial Light Modulators and Applications. Washington, D.C. : Optica Publishing Group, 1988. http://dx.doi.org/10.1364/slma.1988.the14.

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Zambrini, Roberta. « Multimode Light in Action ». Dans Frontiers in Optics. Washington, D.C. : OSA, 2009. http://dx.doi.org/10.1364/fio.2009.fwy1.

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Soref, Richard A., et Joseph P. Lorenzo. « Light-by-Light Modulation in Silicon-on-Insulator Waveguides ». Dans Integrated and Guided Wave Optics. Washington, D.C. : Optica Publishing Group, 1989. http://dx.doi.org/10.1364/igwo.1989.mee1.

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We have constructed silicon-on-insulator (SOI) channel waveguides, and have obtained intensity modulation of multimode 1.3 μm light propagating in those guides using 800 nm light. From a theoretical standpoint1, single-mode SOI guides with submicron height are attractive because of their low propagation losses. However, in these early experiments, we chose to use larger, multimode guides that are easier to work with.

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Guzman-Sepulveda, J. R., et A. Dogariu. « Multimode interference dynamic light scattering ». Dans CLEO : Applications and Technology. Washington, D.C. : OSA, 2018. http://dx.doi.org/10.1364/cleo_at.2018.af1m.5.

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Baudin, K., A. Fusaro, K. Krupa, J. Garnier, C. Michel, S. Rica, G. Millot et A. Picozzi. « Light condensation in multimode fibers ». Dans CLEO : QELS_Fundamental Science. Washington, D.C. : OSA, 2020. http://dx.doi.org/10.1364/cleo_qels.2020.fm2p.1.

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Huang, Jianming, et Prem Kumar. « Photon statistics of multimode squeezed light ». Dans ADVANCES IN LASER SCIENCE−IV. AIP, 1989. http://dx.doi.org/10.1063/1.38555.

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Polycarpou, C., K. N. Cassemiro, G. Venturi, A. Zavatta et M. Bellini. « Adaptive Detector for Multimode Quantum Light ». Dans Frontiers in Optics. Washington, D.C. : OSA, 2012. http://dx.doi.org/10.1364/fio.2012.fw4j.2.

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Wang, Qu, Xiaojian Wang, Langlang Ye, Aidong Men, Fang Zhao, Haiyong Luo et Yan Huang. « A Multimode Fusion Visible Light Localization Algorithm using Ambient Lights ». Dans 2018 Ubiquitous Positioning, Indoor Navigation and Location-Based Services (UPINLBS). IEEE, 2018. http://dx.doi.org/10.1109/upinlbs.2018.8559842.

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Carpenter, Joel. « Spatial light control for multimode optical fibre ». Dans 2018 23rd Opto-Electronics and Communications Conference (OECC). IEEE, 2018. http://dx.doi.org/10.1109/oecc.2018.8729891.

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Christ, Andreas, Benjamin Brecht, Georg Harder, Andreas Eckstein, Vahid Ansari, Cosmo Lupo et Christine Silberhorn. « Quantum communication with ultrafast multimode pulsed light ». Dans 2013 IEEE Photonics Society Summer Topical Meeting Series. IEEE, 2013. http://dx.doi.org/10.1109/phosst.2013.6614559.

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Rapports d'organisations sur le sujet "Multimode light"

Soh, Daniel. Quantum Super-resolution Bioimaging using Massively Entangled Multimode Squeezed Light. Office of Scientific and Technical Information (OSTI), septembre 2020. http://dx.doi.org/10.2172/1660796.

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Tovar, Anthony. Off-axis multimode light beam propagation in tapered lenslike media including those with spatial gain or loss variation. Portland State University Library, janvier 2000. http://dx.doi.org/10.15760/etd.5711.

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Kodupuganti, Swapneel R., Sonu Mathew et Srinivas S. Pulugurtha. Modeling Operational Performance of Urban Roads with Heterogeneous Traffic Conditions. Mineta Transportation Institute, janvier 2021. http://dx.doi.org/10.31979/mti.2021.1802.

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The rapid growth in population and related demand for travel during the past few decades has had a catalytic effect on traffic congestion, air quality, and safety in many urban areas. Transportation managers and planners have planned for new facilities to cater to the needs of users of alternative modes of transportation (e.g., public transportation, walking, and bicycling) over the next decade. However, there are no widely accepted methods, nor there is enough evidence to justify whether such plans are instrumental in improving mobility of the transportation system. Therefore, this project researches the operational performance of urban roads with heterogeneous traffic conditions to improve the mobility and reliability of people and goods. A 4-mile stretch of the Blue Line light rail transit (LRT) extension, which connects Old Concord Rd and the University of North Carolina at Charlotte’s main campus on N Tryon St in Charlotte, North Carolina, was considered for travel time reliability analysis. The influence of crosswalks, sidewalks, trails, greenways, on-street bicycle lanes, bus/LRT routes and stops/stations, and street network characteristics on travel time reliability were comprehensively considered from a multimodal perspective. Likewise, a 2.5-mile-long section of the Blue Line LRT extension, which connects University City Blvd and Mallard Creek Church Rd on N Tryon St in Charlotte, North Carolina, was considered for simulation-based operational analysis. Vissim traffic simulation software was used to compute and compare delay, queue length, and maximum queue length at nine intersections to evaluate the influence of vehicles, LRT, pedestrians, and bicyclists, individually and/or combined. The statistical significance of variations in travel time reliability were particularly less in the case of links on N Tryon St with the Blue Line LRT extension. However, a decrease in travel time reliability on some links was observed on the parallel route (I-85) and cross-streets. While a decrease in vehicle delay on northbound and southbound approaches of N Tryon St was observed in most cases after the LRT is in operation, the cross-streets of N Tryon St incurred a relatively higher increase in delay after the LRT is in operation. The current pedestrian and bicycling activity levels seemed insignificant to have an influence on vehicle delay at intersections. The methodological approaches from this research can be used to assess the performance of a transportation facility and identify remedial solutions from a multimodal perspective.

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Baloch, Imdad, Tom Kaye, Saalim Koomar et Chris McBurnie. Pakistan Topic Brief : Providing Distance Learning to Hard-to-reach Children. EdTech Hub, juin 2020. http://dx.doi.org/10.53832/edtechhub.0026.

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The COVID-19 pandemic has resulted in mass school closures across the world. It is expected that the closures in low- and -middle-income countries (LMICs) will have long-term negative consequences on education and also on broader development outcomes. Countries face a number of obstacles to effectively delivering alternative forms of education. Obstacles include limited experience in facing such challenges, limited teacher digital and pedagogical capacity, and infrastructure constraints related to power and connectivity. Furthermore, inequalities in learning outcomes are expected to widen within LMICs due to the challenges of implementing alternative modes of education in remote, rural or marginalised communities. It is expected that the most marginalised children will feel the most substantial negative impacts on their learning outcomes. Educational technology (EdTech) has been identified as a possible solution to address the acute impact of school closures through its potential to provide distance education. In this light, the DFID Pakistan team requested the EdTech Hub develop a topic brief exploring the use of EdTech to support distance learning in Pakistan. Specifically, the team requested the brief explore ways to provide distance education to children in remote rural areas and urban slums. The DFID team also requested that the EdTech Hub explore the different needs of those who have previously been to school in comparison to those who have never enrolled, with reference to EdTech solutions. In order to address these questions, this brief begins with an overview of the Pakistan education landscape. The second section of the brief explores how four modes of alternative education — TV, interactive radio instruction, mobile phones and online learning — can be used to provide alternative education to marginalised groups in Pakistan. Multimodal distance-learning approaches offer the best means of providing education to heterogeneous, hard-to-reach groups. Identifying various tools that can be deployed to meet the needs of specific population segments is an important part of developing a robust distance-learning approach. With this in mind, this section highlights examples of tools that could be used in Pakistan to support a multimodal approach that reaches the most hard-to-reach learners. The third and final section synthesises the article’s findings, presenting recommendations to inform Pakistan’s COVID-19 education response.<br> <br> This topic brief is available on Google Docs.

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