18documents trouvés
Optocontrol. Rapport final de contrat
K.SALEH, P.H.MERRER, A.BOUCHIER, P.LACROIX, O.LLOPIS, G.CIBIEL
I2C, MOST, CNES
Rapport de Contrat : Projet Région Midi Pyrénées "Optocontrol", Mars 2012, 11p. , N° 12135
Non diffusable
126841Phase noise measurement of a narrow linewidth CW laser using delay lines approaches
O.LLOPIS, P.H.MERRER, H.BRAHIMI, K.SALEH, P.LACROIX
MOST, 2I
Revue Scientifique : Optics Letters, Vol.36, N°14, pp.2713-2715, Juillet 2011 , N° 11427
Lien : http://hal.archives-ouvertes.fr/hal-00609221/fr/
Diffusable
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Abstract
Two different laser phase noise measurement techniques are compared. One of these two techniques is based on a conventional and low cost delay line system which is usually set up for the linewidth measurement of semiconductor lasers. The results obtained with both techniques on a high spectral purity laser agree well and confirm the interest of the low cost technique. Moreover, an extraction of the laser linewidth using CAD tools is performed.
Stereovision algorithm to be executed at 100Hz on a FPGA-based architecture
M.DEVY, J.L.BOIZARD, D.BOTERO GALEANO, H.D.CARILLO LINDADO, M.IBARRA MANZANO, Z.IRKI, A.NAOULOU , P.LACROIX, P.FILLATREAU, J.Y.FOURNIOLS, C.PARRA
RAP, N2IS, 2I, DELTA TECHNOLOGIES, Pontificia
Ouvrage (contribution) : Advances in Theory and Applications of Stereo Vision, N°978-953-307-516-7, Janvier 2011, Chapter 17, pp.327-352 , N° 11032
Diffusable
123937Evaluation de différentes techniques de mesure du bruit de phase de sources optiques et hyperfréquences utilisant une ligne à retard optique
O.LLOPIS, H.BRAHIMI, P.LACROIX
MOST, 2I
Manifestation avec acte : Colloque International Francophone du club CMOI/SFO "Contrôles et Mesures Optiques pour l'Industrie" , Toulouse (France), 15-19 Novembre 2010, 5p. , N° 10709
Lien : http://hal.archives-ouvertes.fr/hal-00537966/fr/
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Abstract
The unique property of the ultra low losses of optical fiber can be used in the field of metrology to reach large delays, which are equivalent to ultra high quality factors. It is thus possible to realize, with a fiber spool, passive frequency references which can be used to characterize frequency sources of different type : microwave frequency sources and optical frequency sources. This paper describes two different benches, one in the microwave domain and the other one in the optical domain, which are based on optical fiber delay lines. The first bench is used to measure the phase noise of very high spectral purity microwave sources. The other one is dedicated to the measurement of the frequency fluctuations of ultra high spectral purity infrared lasers.
Stabilisation en fréquence d'une diode laser DFB. Conception réalisation et utilisation d'un banc de mesure. Version 1
P.LACROIX
2I
Rapport LAAS N°10140, Mars 2010, 105p.
Diffusion restreinte
120873Optimization of a microwave frequency discriminator based on an optical delay line
H.BRAHIMI, P.LACROIX, O.LLOPIS
MOST, 2I
Manifestation avec acte : International Topical Meeting on Microwave Photonics, MWP 2009, Valence (Espagne), 14-16 Octobre 2009, p.4 , N° 09497
Lien : http://hal.archives-ouvertes.fr/hal-00410793/fr/
Diffusable
Plus d'informations
Abstract
A microwave frequency discriminator based on an optical delay line is studied. This system features a noise floor below -150 dBc/Hz at 10 kHz offset. The noise mechanisms are studied in order to determine the main noise contributors.
An efficient reconfigurable architecture to implement dense stereo vision algorithm using high-level synthesis
M.IBARRA MANZANO, M.DEVY, J.L.BOIZARD, P.LACROIX, J.Y.FOURNIOLS
RAP, N2IS, 2I
Manifestation avec acte : International Conference on Field Programmable Logic and Applications (FPL 2009), Prague (République Tchèque), 31 Août - 3 Septembre 2009, pp.444-447 , N° 09843
Diffusable
123593Obstacle avoidance by a multi-cameras system
M.IBARRA MANZANO, M.DEVY, J.L.BOIZARD, P.LACROIX, W.FILALI, J.Y.FOURNIOLS
N2IS, RAP, 2I
Manifestation avec acte : Manifestations avec actes, 9th International Workshop on Electronics, Control, Modelling, Measurement and Signals (ECMS 2009), Mondragon (Espagne), 8-10 Juillet 2009, 6p. , N° 09883
Diffusable
124861Integrated subsystem for obstacle detection from a belt of micro-cameras
M.DEVY, M.IBARRA MANZANO, J.L.BOIZARD, P.LACROIX, W.FILALI, J.Y.FOURNIOLS
RAP, N2IS, 2I
Manifestation avec acte : 14th International Conference on Advanced Robotics (ICAR 2009), Munich (Allemagne), 22-26 Juin 2009, 6p. , N° 09255
Diffusable
117856Characterization and locking of optical mini-resonators for microwave sources stabilization
P.H.MERRER, P.LACROIX, H.BRAHIMI, S.BONNEFONT, O.LLOPIS, L.GHISA, Y.DUMEIGE, P.FERON, G.CIBIEL
MOST, 2I, PH, Rennes, CNES
Manifestation avec acte : The European Forum for Time and Frequency 08. Toulouse Space Show'08, Toulouse (France), 22-25 Avril 2008, 4p. , N° 08227
Lien : http://hal.archives-ouvertes.fr/hal-00276359/fr/
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Abstract
The use of optical resonators for microwave filtering is discussed. Several measurement benches, allowing the test of the optical and optical-microwave properties of high Q optical WGM resonators or optical fiber loop resonators, have been set-up. This paper gives an overview of all these measurement benches, together with a preliminary result on an RF high quality factor filter realized using a small length fiber loop.
Mots-Clés / Keywords
Optical resonator; Fiber ring resonator; Laser stabilization; Microwave filter; Microwave-optical systems;