Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Leonora Ursini"'
Autor:
Marco Santagiustina, M. Benedetti, Valerio Annovazzi-Lodi, Giuseppe Aromataris, Sabina Merlo, Leonora Ursini, M. Guglielmucci, Antonio Mecozzi, Cristian Antonelli
Publikováno v:
Fiber and Integrated Optics. 27:308-316
In this article, we report on the research activity that has been recently carried out in Italy on secure transmission by using chaotic carriers in the framework of a national and two international projects. Transmission of both analog and digital si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::324b8b5d579b15edee7761e225f02a5f
https://doi.org/10.1080/01468030802192625
https://doi.org/10.1080/01468030802192625
Publikováno v:
Journal of Lightwave Technology. 24:4055-4063
In this paper, a model describing the vector interaction of an intense backward-propagating Raman pump and a weak forward-propagating Stokes signal in randomly birefringent fibers is proposed. The model accounts for the losses, the Raman interaction,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9fcc1d169e2773dc3dd6ba870ecb748
https://doi.org/10.1109/jlt.2006.883640
https://doi.org/10.1109/jlt.2006.883640
Autor:
Marco Santagiustina, Leonora Ursini
Publikováno v:
IEEE Photonics Technology Letters. 25:1347-1349
Unconventional signal processing, such as all-optical signal time differentiation and true time reversal, can be realized on sub-nanosecond pulses, by exploiting dynamic Brillouin gratings in optical fibers. The performance of such optical processors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62bed1c2bf030df93352e9e843c932dc
https://doi.org/10.1109/lpt.2013.2265332
https://doi.org/10.1109/lpt.2013.2265332
Publikováno v:
IEEE Photonics Technology Letters. 23:1457-1459
Polarization attraction in counterpropagating, randomly birefringent, fiber Raman amplifiers is numerically investigated, including the effects of nonlinear polarization rotation, pump depletion and orthogonal Raman gain. The analysis determines the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db16a58bd18288c1fe332aef3320f2bd
https://doi.org/10.1109/lpt.2011.2163061
https://doi.org/10.1109/lpt.2011.2163061
Publikováno v:
IEEE Photonics Technology Letters. 20:1420-1422
Polarized Brillouin amplification in randomly birefringent spun fibers is theoretically and numerically studied. For unspun fibers, the mean gain is theoretically determined. For unidirectionally spun fibers, the potential of providing high gain with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fba8094e172441a710244a363ca650fc
https://doi.org/10.1109/lpt.2008.927884
https://doi.org/10.1109/lpt.2008.927884
Publikováno v:
Scientific Reports
The manipulation of dynamic Brillouin gratings in optical fibers is demonstrated to be an extremely flexible technique to achieve, with a single experimental setup, several all-optical signal processing functions. In particular, all-optical time diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5430acc53ce9f2c3e67d6bf4b5e0a5a8
http://europepmc.org/articles/PMC3615338
http://europepmc.org/articles/PMC3615338
Autor:
Marco Santagiustina, Leonora Ursini
Publikováno v:
Optics letters. 37(5)
A method to induce only one permanent and localized dynamic Brillouin grating in polarization maintaining optical fibers is introduced. The generation of the grating exploits the thumbtack correlation of the chaotic laser signals. A numerical calcula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19c14e4fa96f89cfbc3a1fd27ad5e7e0
https://pubmed.ncbi.nlm.nih.gov/22378429
https://pubmed.ncbi.nlm.nih.gov/22378429
The polarization evolution of the pump and signal in Raman copropagating amplifiers is numerically investigated, by considering the nonlinear polarization rotation and the pump depletion effects. The signal and pump quality at the fiber output is eva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51d329bd1aed2cca7bad23df9c9d3dcc
http://hdl.handle.net/11577/2486527
http://hdl.handle.net/11577/2486527
Publikováno v:
Advanced Photonics.
We experimentally demonstrate that all-optical signal calculus can be realized based on dynamic Brillouin gratings in optical fibers. Temporal integration and first-order differentiation were performed for optical pulse with various waveforms.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f5e806dd7f83aaf7250a31f205e40cc
https://doi.org/10.1364/sl.2011.slma3
https://doi.org/10.1364/sl.2011.slma3
Publikováno v:
Advanced Photonics.
A free space optical chaotic communication system for the secure transmission of a digital message at hundreds Mb/s is presented. The performance of the system is investigated including the indoor infrared channel impairments.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db01944393f221f70214fcb86d0c2a2a
https://doi.org/10.1364/anic.2011.atuc5
https://doi.org/10.1364/anic.2011.atuc5