Academic literature on the topic 'Détecteurs optiques'
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Journal articles on the topic "Détecteurs optiques"
Mousseau, Fanny, Chao Yu, Antigoni Alexandrou, and Cédric Bouzigues. "L’imagerie optique de nanoparticules luminescentes : de la détection de biomolécules au diagnostic in vitro." Photoniques, no. 106 (January 2021): 30–33. http://dx.doi.org/10.1051/photon/202110630.
Full textGreffet, Jean-Jacques. "Comprendre le théorème de réciprocité optique." Photoniques, no. 120 (2023): 56–60. http://dx.doi.org/10.1051/photon/202312056.
Full textNicoletti, Sergio, Mickael Brun, Pierre Labeye, and Mathieu Carras. "Développement d’un détecteur optique de gaz intégré sur puce." Photoniques, no. 60 (July 2012): 38–41. http://dx.doi.org/10.1051/photon/20126038.
Full textCherrington, Emil A. "BRDF-CORRECTED VEGETATION INDICES CONFIRM SEASONAL PATTERN IN GREENING OF FRENCH GUIANA’S FORESTS." Revue Française de Photogrammétrie et de Télédétection 1, no. 211-212 (December 30, 2020): 3–9. http://dx.doi.org/10.52638/rfpt.2015.536.
Full textAlibart, Olivier, Virginia D’Auria, Grégory Sauder, Laurent Labonte, and Sébastien Tanzilli. "Comprendre. Le comptage de photons corrélés en temps." Photoniques, no. 91 (May 2018): 38–42. http://dx.doi.org/10.1051/photon/20189138.
Full textOsbild, D., M. Babut, and P. Vasseur. "Les biocapteurs appliqués au contrôle des eaux: Revue - État de l'art." Revue des sciences de l'eau 8, no. 4 (April 12, 2005): 505–38. http://dx.doi.org/10.7202/705236ar.
Full textLifferth, Austin L. "Glaucome primitif à angle ouvert précoce." Canadian Journal of Optometry 80, no. 4 (November 15, 2018): 33–40. http://dx.doi.org/10.15353/cjo.80.304.
Full textVergniault, Christophe, Edouard Buchoud, Joséphine Boisson-Gaboriau, and Amélie Hallier. "Application des méthodes géophysiques pour le diagnostic de l’aléa cavités sur des ouvrages de grands linéaires, en contexte ferroviaire et hydraulique." Revue Française de Géotechnique, no. 172 (2022): 3. http://dx.doi.org/10.1051/geotech/2022006.
Full textVyas, Sumant, G. N. Purohit, P. K. Pareek, and M. S. Sahani. "Imagerie ultrasonographique pour le suivi du stade précoce de gestation chez le dromadaire (Camelus dromedarius)." Revue d’élevage et de médecine vétérinaire des pays tropicaux 55, no. 3 (March 1, 2002): 241. http://dx.doi.org/10.19182/remvt.9829.
Full textCerbelaud, Arnaud, Axelle Favro, Laure Roupioz, Gwendoline Blanchet, Xavier Briottet, Jean-Marc Delvit, and Pascal Breil. "Potentiel de l'imagerie optique satellitaire à haute résolution pour détecter les dommages engendrés par des épisodes pluvieux extrêmes." La Houille Blanche 106, no. 6 (December 1, 2020): 66–74. http://dx.doi.org/10.1051/lhb/2020059.
Full textDissertations / Theses on the topic "Détecteurs optiques"
Okassa, M'Foubat Anicet. "Détecteurs multi-utilisateurs pour télécommunications optiques." Valenciennes, 2008. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/9bcf18df-a028-4013-952a-db152dc31bdc.
Full textThe optical fiber appears to be the only medium able to convey informations at rates exceeding 1Gb/s, owing to its large bandwidth. The DECT-GPRS and UWB radio technologies allow to transmit data streams in packet mode at high rates. Using an optical infrastructure to link the different access points (radio on fiber) leads to cost reductions in the high data rate networks deployment in the office environment. Our concern, in this thesis report, is with code division multiple access (CDMA). The aim of our work is to design a, performance enhanced and reduced complexity, multi-user receiver structure, based on the parallel cancellation of interferences, our solution is to introduce an interference weighting factor and/or an amplification factor for the detected user signal. A complete theoretical study, supported by simulations, is presented and the optical elements imperfections are taken into account, without omitting a comparison with classical pre-existing systems. Moreover, in order to ascertain the sharing of intelligent components of the DPRS interface to the optical network and dynamic resource supervision, an algorithm is presented for identification of the modulation types authorized by the ETSI standard, several possible solutions are depicted and a novel modulation detector is described, theoretically analyzed, optimized using simulations (thresholds, comparison with alternative solutions)
Chipaux, Rémi. "Scintillateurs et autres détecteurs optiques de particules." Habilitation à diriger des recherches, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00573492.
Full textGaschet, Christophe. "Détecteurs courbes et déformables : applications multidisciplinaires." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0601/document.
Full textIn the past few years, curved sensors have been proposed to enhance optical systems. The curvature of these sensors improves off-axis aberrations, such as field curvature, which provides a better resolution and less complex optical systems.This work studies deformable and curved sensors development in a multidisciplinary approach. Firstly, scene and curved sensors are theoretically linked. The form and the position of the object change the curvature of the best image plane, leading to new relations adapted to optical systems with deformable sensors. Gains in compactness are also demonstrated. These investigations merge into a new methodology adapted to optical systems based on curved sensors that has been developed. The first step is to determine mechanical limits of the sensor such as maximum bending without breakage. Based on these limits, a new compact architecture is developed, providing high resolution and good field of view. New tolerances are determined to manufacture a system with its opto-mechanical mount. Finally, the entire imaging system is characterized. The form of the curved sensor is analyzed, showing few deviations from the ideal sphere. Electro-optical characterizations are realized and the image quality is determined according to the object distance, showing the effects of the deformable curvature. The ideal curved focal plane is also determined by combining a flat sensor to the manufactured optical system
Giard, Edouard. "Caractérisation et orientation de la filière des détecteurs infrarouge à superréseau InAs/GaSb." Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCC268.
Full textThis work, realized at ONERA (DOTA), focuses on the study and the electro-optical characterization of type II InAs/GaSb superlattice (T2SL) infrared photodetectors. The aim of this work was to improve the knowledge of this high performance infrared cooled photodetector and to focus on its potential to address the high operating temperature (HOT) (T > 120K) MWIR applications. With the Institut d'Electronique et des Systèmes, we studied a InAs-rich structure, with more InAs than GaSb in the superlattice period, which exhibits a lower dark current than conventional symmetric structures. I first realized or adapted different test benches to determine the other parameters needed to characterize the detector : current-voltage characteristics, noise, calibrated spectral response and minority carrier lifetime measurements. I demonstrated that the InAs-rich structure has a quantum efficiency (QE) penalized by a very short holes diffusion length. I estimated the value equal to 80nm at 77K. Two solutions have been proposed : the first tested thanks to the first InAs-rich MWIR FPA, is to change the side of the illumination : the average QE is 42% at 77K ; the second is to switch minority carriers type, by doping the structure : a maximum QE of 60% was measured at operating temperatures varying from 77K to 130K and at zero bias voltage. A BLIP temperature of 110K was determined. Ail these results allow us to assess the ability of T2SL to address HOT MWIR applications
Conforti, Di Lorenzo Selma. "Développement et caractérisation d’un ASIC de lecture de macro-cellule de photo-détecteurs de grande dimension." Paris 11, 2010. http://www.theses.fr/2010PA112142.
Full textPMm² is a project founded for three years by the French National Agency for Research (ANR) with the complete title: “Innovative electronics for photo-detectors array used in high energy physics and astroparticles”. The project proposes to segment the large surface of photo-detection in macro pixel consisting of an array of 16 PMTs of 12-inches (2*2 m²), connected to an autonomous front-end electronics which works in a triggerless data acquisition mode placed near the array. This is possible thanks to the microelectronics progress that allows to integrate the read out and the signal processing, of all the photomultipliers, in the same circuit (ASIC) named PARISROC (Photomultiplier ARray Integrated in SiGe Read Out Chip). The ASIC must send out only the digital data by network to the surface central data storage. The PARISROC Chip, made in AMS 0. 35 µm technology, integrates 16 independent channels for each PMTs of the array, providing charge and time measurements. The first prototype of PARISROC chip has a total surface of 19 mm². It has been sent for fabrication in June 2008 to AMS foundry (AustriaMicroSystems) through the CMP (Multi Project Center) and received in December 2008. The ASIC measurements have led to the realization of a second prototype. Important measurements were brought in terms of noise, dynamic range, read out frequency (from 10 MHz to 40 MHz), time measurements (TDC improvements) and charge measurements (Slow shaper improvements). Sent for fabrication in November 2009 and received in February 2010, this new prototype PARISROC 2 has been tested and the characterisation has shown a good overall behavior and the verification of the improvements
Guyard, Romain. "Capteur à fibre optique pour la mesure de déformation au sein des matériaux." Nantes, 2015. https://archive.bu.univ-nantes.fr/pollux/show/show?id=6e451d89-fed7-4980-a018-fbdae1b0090c.
Full textThe aim of this thesis is the design of a new fiber optic sensor for the strain measurement inside materials. Fiber Bragg grating strain sensors are usually glued on the surface of the monitored structure. Their use like embedded strain sensor may be unadapted. Indeed, in these circumstances, a mechanical coupling between the sensor and the host material changes the transverse strain of the fiber. The transverse strain becomes unknown. Consequently, the only measurement of the Bragg wavelength shift is not enough to estimate both axial and transverse strains. In order to decorrelate these strains, we propose a sensor architecture based on the juxtaposition of a Bragg grating (FBG) and of a long period grating (LPG). The thesis work consist in finding the optimal architecture so that the sensor response to strain is linear and the measurement resolution is identical to the resolution of usual fiber optic sensors. During the sensor design, some usual results on LPG have been studied again. Some original optical properties of cladding modes have been revealed. It has been shown that the shape of these modes changes significantly with the cladding radius of the fiber and that there are critical cladding radii for which some modes have the same transverse intensity distribution. A statistical study has been carried out on the strain sensitivities of LPG. General behaviors of LPG strain sensors have been highlighted. Especially, the crosssensitivities can be neglected and the sensitivities are mainly influenced by the period of grating and the cladding radius of the fiber. When the sensor is embedded inside the material, it may be bent. The bending effects on the gratings responses have been studied using the finite element as well as the semi analytical methods. It has been shown that the bending sensitivity of FBG depends on a balance mechanism between the effective refractive index change and the coupling coefficient change of the coupled modes and that the average index variation of the grating plays a key role in the amplitude and the sign of this sensitivity. A similar mechanism has been highlighted for LPG
Tareb, Malica. "Systèmes de lecture et d'acquisition de données pour un détecteur photomultiplicateur sensible à la position, associée [i. E. Associé] à des fibres scintillantes." Chambéry, 1994. http://www.theses.fr/1994CHAMS014.
Full textBevenot, Xavier. "Etude de la faisibilité et réalisation d'un capteur d'hydrogène à fibres optiques pour des applications aérospatiales." Saint-Etienne, 1998. http://www.theses.fr/1998STET4006.
Full textBonvalot, Cyrille. "Contribution à la compréhension du courant d'obscurité dans les détecteurs infrarouges matriciels à base de matériaux III-V." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST016.
Full textLynred is one of the major actors in the high quality cooled infrared detectors market, originally based on II-VI materials (HgCdTe), and more recently on III-V materials (QWIP, InSb, InGaAs). The InSb and InGaAs detectors are composed of photodiode organized in an array, in order to get a two dimension imager. The study reported here aim to enhance our comprehension of the dark current of these photodiodes. The subject is addressed in three steps: a study of the junction profile, an analyze of the phenomenon responsible for the dark current generated in the material’s bulk, and the highlighting of the interfaces role. The junction profile is established from sensibility optimized SIMS measurement. The thicknesses of the absorbing InGaAs layer, and of the space charge region, are obtained from capacity measurement. Because of the non-abrupt junction, the determination of the doping concentration can’t be achieved form the capacity. Diffusion current, which have to be taken into account for the InGaAs diode, is highly dependent upon the double heterojunction. Therefore, vertical and radial diffusion mechanisms have to be considered separately. Additionally, array configuration brings another constraint. Generation current is the witness of the actual technologies progresses, high quality materials with low default concentration and small sized diodes. Bulk material contribution is mostly negligible in comparison of the surface states one, localized at the InSb/SiO or the InGaAs/InP interfaces. Hence, the passivation process, or the epitaxy, is the critical point of those technologies. This thesis made it possible to identify the mechanisms responsible for the dark current of the InSb and InGaAs diodes, allowing us to point out the critical fabrication processes and to propose optimization of design. Characterization means developed during those three years might be used in the production line. It will allow monitoring the stability of the fabrication processes, especially the doping and thickness of the InGaAs absorbing layer. Those methods have the advantages of being simple to use, relatively cheap and above all non-destructives
Bichler, Anthony. "Modélisation et simulation de la propagation optique dans une fibre optique multimode précontrainte : conception de capteurs à fibre optique à modulation d’intensité dédiés à la mesure de températures et d’étirements." Strasbourg, 2011. https://publication-theses.unistra.fr/public/theses_doctorat/2011/BICHLER_Anthony_2011.pdf.
Full textThis manuscript presents the modeling, simulation and design of a new kind of light modulation optical fiber sensor for temperature and strain measurement. The transducer consists of a multimode fiber step index clamped between two micro-structured jaws. The clamping effect generates local periodical perturbations of both the geometry and the fiber refraction indexes (core and optical cladding). In order to compute the radiative coupling occurring when the waveguide is perturbated by a mechanical deformation of short period, we have chosen to use an electromagnetic model of modes coupling initially developed by Dietrich Marcuse. The simulation allowed us to determine the transducer sensitivity according to its specific characteristics. From these results we have chosen the parameters useful to design the sensor versus the aimed application. The first jaws prototypes of transducers have been microstructured in rectangular pattern etched in metal by femto-second laser micromachining. The elementary pattern size was of 20 micrometers of depth and the pattern layout period was ranging from 50 micrometers to 100 micrometers. After evaluation, we proposed to develop a large scale fabrication process of the jaws using plastic injection which was very efficient. The experimental tests of the first sensor prototypes allowed the validation of the computing models and showed a linear response of the sensor versus the measured physical parameter. We present the static and dynamic calibration methods that we have implemented to establish the metrological specifications of the sensor
Books on the topic "Détecteurs optiques"
Desvignes, François. Détection et détecteurs de rayonnements optiques. Paris: Masson, 1987.
Find full textP, De Paula Ramon, Society of Photo-optical Instrumentation Engineers., and Automated Imaging Association, eds. Fiber optic and laser sensors XI: 7-8 September 1993, Boston, Massachusetts. Bellingham, Wash., USA: SPIE, 1994.
Find full textCourse of the International School of Quantum Electronics on Optical Sensors and Microsystems: New Concepts, Materials, Technologies (1997 Erice, Italy). Optical sensors and microsystems: New concepts, materials, technologies. New York: Kluwer Academic/Plenum Publishers, 2000.
Find full textFarhad, Ansari, ed. Applications of fiber optic sensors in engineering mechanics: A collection of state-of-the-art papers in the application of fiber optic technologies to civil structures. New York, N.Y: American Society of Civil Engineers, 1993.
Find full textV, Ramamurthy, and Schanze Kirk S, eds. Optical sensors and switches. New York: Marcel Dekker, 2001.
Find full textWolfgang, Osten, ed. Optical inspection of microsystems. Boca Raton, FL: Taylor & Francis, 2006.
Find full textBahram, Javidi, ed. Image recognition and classification: Algorithms, systems, and applications. New York: Marcel Dekker, 2002.
Find full textPerrone, Guido (Professor of Electronics and Telecommunications), author, ed. Fiber-optic sensors for biomedical applications. Boston, MA: Artech House, 2018.
Find full textS, Ligler Frances, and Taitt Chris A. Rowe, eds. Optical biosensors: Present and future. Amsterdam: Elsevier, 2002.
Find full textBook chapters on the topic "Détecteurs optiques"
DUCROS, Nicolas. "Une introduction à l’imagerie computationnelle monodétecteur." In Imageries optiques non conventionnelles pour la biologie, 247–74. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9132.ch8.
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