247documents trouvés
Technologies pour applications optiques sur verre et SOI, cas des résonateurs 2D et 3D
A.ALI SLIMANE, A.DESMOULIN, K.SALEH, O.LLOPIS, A.FERNANDEZ
MOST, TEAM
Manifestation avec acte : Journées thématiques RF/millimétrique et optique intégrée 2013 du 17 janvier au 18 janvier 2013, Grenoble (France), GT4 et GT2 du GDR "Ondes", Janvier 2013, 2p. , N° 13006
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129009Optical scattering induced noise in fiber ring resonators and optical optoelectronic oscillators
K.SALEH, O.LLOPIS, G.CIBIEL
MOST, CNES
Rapport LAAS N°12712, Décembre 2012, 14p.
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128816Investigations on noise processes in optical resonator based microwave oscillators
K.SALEH, P.H.MERRER, O.LLOPIS, G.CIBIEL
MOST, CNES
Manifestation avec acte : European Microwave Integrated Circuits Conference (EuMIC) 2012 du 28 octobre au 02 novembre 2012, Amsterdam (Pays Bas), 2012, pp.595-598 , N° 12341
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Abstract
Optoelectronic oscillators based on high Q optical resonators are presented in this paper. These oscillators use a Pound-Drever-Hall laser stabilization technique and two different types of resonators: fiber ring and monocrystalline disk resonators. Noise processes in the oscillators are discussed, particularly the influence of the laser noise conversion and nonlinear optical scattering noise. A modeling approach using CAD software is also proposed.
Behavioral circuit models of power BAW resonators and filters
F.CONSTANTINESCU, M.NITESCU, A.G.GHEORGHE, A.FLOREA, O.LLOPIS
PUB, MOST
Revue Scientifique : Analog Integrated Circuits and Signal Processing, Vol.73, N°1, pp.57-64, Octobre 2012, DOI: 10.1007/s10470-011-9758-7 , N° 11671
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129029Millimeter wave generation using brillouin scattering in a High Q fiber ring resonator
K.SALEH, P.H.MERRER, O.LLOPIS, G.CIBIEL
MOST, CNES
Manifestation avec acte : International Topical Meeting on Microwave Photonics (MWP 2012), Noordwijk (Pays Bas), 11-14 Septembre 2012, 4p. , N° 12342
Lien : http://hal.archives-ouvertes.fr/hal-00711283
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Abstract
We introduce an efficient technique to optically generate millimeter-wave sources. The technique is based on the frequency multiplication concept using high order harmonics, generated by a Mach-Zehnder modulator, combined with the Brillouin selective side band amplification process in a high Q fiber ring resonator. We demonstrate the generation of a low phase noise 65.2 GHz signal with a power level 15 dB higher than the power level usually obtained using classical frequency multiplication.
Modeling and practical demonstration of multiple optical fiber ring resonators in the microwave domain
P.H.MERRER, O.LLOPIS, P.NICOLE, S.CONSTANT
MOST, Thalès Elancourt
Revue Scientifique : Microwave and Optical Technology Letters, Vol.54, N°7, pp.1552-1556, Juillet 2012 , N° 12355
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127667Characterization technique of optical whispering gallery mode resonators in the microwave frequency domain for optoelectronic oscillators
P.H.MERRER, K.SALEH, O.LLOPIS, S.BERNESCHI, F.COSI, G.NUNZI CONTI
MOST, CNR-IFAC
Revue Scientifique : Applied Optics, Vol.51, N°20, pp.4742-4748, Juillet 2012 , N° 12354
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127665Evaluation of low cost solutions for the transmission through optical fiber of low phase noise OCXO signals
S.AZAIZIA, K.SALEH, O.LLOPIS, A.RISSONS
ISAE, MOST
Manifestation avec acte : IEEE International Frequency Control Symposium (IFCS 2012), Baltimore (USA), 21-24 Mai 2012, pp.100-104 , N° 12346
Lien : http://hal.archives-ouvertes.fr/hal-00714491
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Abstract
Various fiber optics links are evaluated for the transmission of OCXO signals on relatively short distances (1 m to 1 km). The case of VCSEL lasers is compared to the case of the more classical DFB laser. The DFB is still the best device, particularly in terms of signal to noise ratio, but single-mode VCSELs are becoming interesting as a low cost alternative to this device.
Optoelectronic oscillator based on fiber ring resonator: overall system optimization and phase noise reduction
K.SALEH, P.H.MERRER, O.LLOPIS, G.CIBIEL
MOST, CNES
Manifestation avec acte : IEEE International Frequency Control Symposium (IFCS 2012), Baltimore (USA), 21-24 Mai 2012, pp.542-547 , N° 12411
Lien : http://hal.archives-ouvertes.fr/hal-00719417
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Abstract
Theoretical and experimental optimization studies are presented in this paper, where the aim is to improve the phase noise of an optoelectronic oscillator based on a passive fiber ring resonator. Our experimental results demonstrate a significant reduction in the phase noise of the final optimized system, which is also compared to the best existing oscillator of the same type, an active cavity based coupled optoelectronic oscillator.
50 GHz to 60 GHz local oscillator transmission over fiber using optical frequency multiplication
O.LLOPIS, P.MARTINET, P.H.MERRER, K.SALEH
MOST
Revue Scientifique : Microwave and Optical Technology Letters, Vol.54, N°5, pp.1313-1316, Mai 2012 , N° 11699
Lien : http://hal.archives-ouvertes.fr/hal-00659871
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Abstract
The main parameters of a local oscillator distribution in the millimeter wave range are described. The link is based on optical frequency multiplication taking benefit of the modulator nonlinearity. It is modeled using an original CAD approach. Then, various practical solutions are compared and their phase noise floor is measured.