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19 results on '"Sakat, A. A."'

3. Defects management in the gain media of GeSn micro-disk lasers

Author

Xavier Checoury, Nicolas Pauc, Emilie Sakat, Isabelle Sagnes, Alexei Chelnokov, K. Pantzas, C. Villebasse, A. Durnez, Vincent Calvo, Frederic Boeuf, M. El Kurdi, Etienne Herth, Gilles Patriarche, Binbin Wang, J.M. Hartmann, Vincent Reboud, Anas Elbaz, Jérémie Chrétien, and Lara Casiez

Subjects
Dense array, Silicon photonics, Active laser medium, Materials science, business.industry, Etching (microfabrication), law, Optoelectronics, business, Laser, Lasing threshold, law.invention
Abstract

We fabricated a Ge 0.92 Sn 0.08 micro-disk laser with a lasing threshold as low as 20-30 kW/cm2 at 75 K. A specific etching process was developed to remove the dense array of misfit dislocations from the gain medium. Further surface treatments and passivations improved the lasing dynamics.

Published
2020

4. Defects management in the gain media of GeSn micro-disk lasers

Author

Wang, B., primary, Elbaz, A., additional, Herth, E., additional, Sakat, E., additional, Durnez, A., additional, Villebasse, C., additional, Patriarche, G., additional, Checoury, X., additional, Pantzas, K., additional, Sagnes, I., additional, Chretien, J., additional, Casiez, L., additional, Calvo, V., additional, Pauc, N., additional, Chelnokov, A., additional, Boeuf, F., additional, Reboud, V., additional, Hartmann, J.-M., additional, and Kurdi, M. El, additional

Published
2020
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5. Indoor Unicasting/Multicasting service based on 5G Internet of Radio Light network paradigm

Author

Nawar Jawad, John Cosmas, Raed Saadoon, Kareem Ali, Mukhald Salih, Yue Zhang, Murad A. Hadi, and Raid Sakat

Subjects
Service (systems architecture), Multicast, business.industry, Computer science, 020206 networking & telecommunications, 02 engineering and technology, Radio access technology, Server, 0202 electrical engineering, electronic engineering, information engineering, The Internet, Quality of experience, business, Host (network), Next Generation Mobile Networks, Computer network
Abstract

Next generation mobile networks designed to offer new features for User Equipment (UE) and to host more services to improve UEs’ Quality of Experience (QoE). In this regard, this paper presents the concept, implementation and the components of two of the next generation services so-called: Follow Me Service (FMS) and Multicast Sharing Service (MSS). MSS is a service offered by 5gNB small-cell to UE in indoor environments (e.g. Museum), it enables its clients to use their smart phones in a server-client mode. Server (or host) selects media content from content servers, then casts it to a group of registered clients based on predefined criteria (subscription-based or relative proximity-based). MSS does not rely on UE’s smartphone capabilities, rather on network capabilities. MSS can be provisioned by utilising UEs’ geolocation information, robust switching mechanism between multiple 5G Radio Access Technology (RAT) and relying on the intelligence of the SDN/NFV Intelligent Home IP Gateway of the Internet of Radio Light (IoRL) project paradigm. Since the infrastructure of the IoRL is not completely ready for deployment, we used Mininet platform to provide performance monitoring with measurements for the service. Simulation results show the effectiveness of our proposal under various use case scenarios by means of eliminating the packet loss rate and improving QoE of the museum users.

Published
2019

7. Mid-infrared n-Ge on Si plasmonic based microbolometer sensors

Author

Gallacher, Kevin, primary, Millar, Ross W., additional, Giliberti, Valeria, additional, Calandrini, Eugenio, additional, Baldassarre, Leonetta, additional, Frigerio, Jacopo, additional, Ballabio, Andrea, additional, Sakat, Emilie, additional, Pellegrini, Giovanni, additional, Isella, Giovanni, additional, Ortolani, Michele, additional, Biagioni, Paolo, additional, and Paul, Douglas J., additional

Published
2017
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9. n-Ge on Si for mid-infrared plasmonic sensors

Author

Paul, Douglas J., primary, Gallacher, Kevin, additional, Millar, Ross W., additional, Giliberti, Valeria, additional, Calandrini, Eugenio, additional, Baldassarre, Leonetta, additional, Fischer, Marco P., additional, Frigerio, Jacopo, additional, Ballabio, Andrea, additional, Sakat, Emilie, additional, Pellegrini, Giovanni, additional, Brida, Daniele, additional, Isella, Giovanni, additional, Ortolani, Michele, additional, and Biagioni, Paolo, additional

Published
2017
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10. Mid-infrared plasmonic germanium antennas on silicon

Author

Giovanni Isella, Antonio Samarelli, Douglas J. Paul, Paolo Biagioni, Kevin Gallacher, Marco Finazzi, Eugenio Calandrini, Jacopo Frigerio, Leonetta Baldassarre, Emilie Sakat, Michele Ortolani, Politecn Milan, LNESS Dipartimento Fis, I-22100 Como, Italy, Department of Physics [Roma La Sapienza], Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Center for Life Nano Science [Genova] (Sapienza@IIT Laboratory), Istituto Italiano di Tecnologia (IIT)-Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], James Watt School of Engineering [Univ Glasgow], University of Glasgow, INFM-Dipartimento di Fisica-Politecnico di Milano, and Istituto Nazionale di Fisica Nucleare (INFN)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, Silicon, Sensing applications, business.industry, Mid infrared, Physics::Optics, chemistry.chemical_element, Germanium, Epitaxy, Condensed Matter::Materials Science, chemistry, Condensed Matter::Superconductivity, Hardware_INTEGRATEDCIRCUITS, Physics::Atomic and Molecular Clusters, Optoelectronics, Antenna (radio), business, Astrophysics::Galaxy Astrophysics, Plasmon
Abstract

International audience; We introduce an all-semiconductor platform for mid-infrared plasmonics based on epitaxial heavily-doped Ge-on-Si. We design, fabricate, and characterize plasmonic Ge antenna arrays to assess the potential of this platform for mid-infrared sensing applications.

Published
2014

11. Mid-infrared plasmonic platform based on n-doped Ge-on-Si: Molecular sensing with germanium nano-antennas on Si

Author

Baldassarre, L., primary, Sakat, E., additional, Bollani, M., additional, Samarelli, A., additional, Gallacher, K., additional, Frigerio, J., additional, Pellegrini, G., additional, Giliberti, V., additional, Ballabio, A., additional, Fischer, M P., additional, Brida, D., additional, Isella, G., additional, Paul, D.J., additional, Ortolani, M., additional, and Biagioni, P., additional

Published
2016
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12. Mid-infrared intersubband absorption in p-Ge/SiGe quantum wells grown on Si

Author

Gallacher, Kevin, primary, Ballabio, Andrea, additional, Millar, Ross W., additional, Samarelli, Antonio, additional, Frigerio, Jacopo, additional, Chrastina, Danny, additional, Isella, Giovanni, additional, Baldassarre, Leonetta, additional, Ortolani, Michele, additional, Sakat, Emilie, additional, Biagioni, Paolo, additional, and Paul, Douglas J., additional

Published
2015
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13. Time- and frequency-resolved electrodynamics of germanium nanoantennas for mid-infrared plasmonics

Author

Ortolani, Michele, primary, Fischer, Marco P., additional, Baldassarre, Leonetta, additional, Samarelli, Antonio, additional, Gallacher, Kevin, additional, Frigerio, Jacopo, additional, Giliberti, Valeria, additional, Sakat, Emilie, additional, Schmidt, Christian, additional, Leitenstorfer, Alfred, additional, Daniele, Brida, additional, Isella, Giovanni, additional, Paul, Douglas J., additional, and Biagioni, Paolo, additional

Published
2015
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15. Mid-infrared plasmonic platform based on heavily doped epitaxial Ge-on-Si: Retrieving the optical constants of thin Ge epilayers

Author

Baldassarre, Leonetta, primary, Calandrini, Eugenio, additional, Samarelli, Antonio, additional, Gallacher, Kevin, additional, Paul, Douglas J., additional, Frigerio, Jacopo, additional, Isella, Giovanni, additional, Sakat, Emilie, additional, Finazzi, Marco, additional, Biagioni, Paolo, additional, and Ortolani, Michele, additional

Published
2014
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16. Mid-infrared plasmonic germanium antennas on silicon

Author

Frigerio, Jacopo, primary, Ortolani, Michele, additional, Baldassarre, Leonetta, additional, Calandrini, Eugenio, additional, Samarelli, Antonio, additional, Gallacher, Kevin, additional, Sakat, Emilie, additional, Finazzi, Marco, additional, Paul, Douglas J., additional, Biagioni, Paolo, additional, and Isella, Giovanni, additional

Published
2014
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