Zobrazeno 1 - 10
of 231
pro vyhledávání: '"Zitelli, M."'
Autor:
Mansuryan, T., Tonello, A., Krupa, K., Desmouliere, A., Ntoutoume, G. Ndong, Sol, V., Lefort, C., Zitelli, M., Ferraro, M., Mangini, F., Sun, Y., Lobato, Y. Arosa, Wetzel, B., Wabnitz, S., Couderc, V.
We demonstrate how a narrowband pump and a broadband spectrum can be spatially multiplexed by selective coupling them in two distinct modes of a few-mode microstructure fiber. The first mode carries most of the input pump energy, and experiences spec
Externí odkaz:
http://arxiv.org/abs/2303.17891
Because of their massless nature, photons do not interact in linear optical media. However, light beam propagation in nonlinear media permits to break this paradigm, and makes it possible to observe photon-photon interactions. Based on this principle
Externí odkaz:
http://arxiv.org/abs/2212.12781
Autor:
Ferraro, M., Mangini, F., Sun, Y., Zitelli, M., Niang, A., Crocco, M. C., Formoso, V., Agostino, R. G., Barberi, R., De Luca, A., Tonello, A., Couderc, V., Babin, S. A., Wabnitz, S.
Atoms ionization by the simultaneous absorption of multiple photons has found applications in fiber optics, where it leads to unique nonlinear phenomena. To date, studies of the ionization regime have been limited to gas-filled hollow-core fibers. He
Externí odkaz:
http://arxiv.org/abs/2201.10988
Autor:
Podivilov, E. V., Mangini, F., Sidelnikov, O. S., Ferraro, M., Gervaziev, M., Kharenko, D. S., Zitelli, M., Fedoruk, M. P., Babin, S. A., Wabnitz, S.
We present a general theory of thermalization of light in multimode optical fibers, including optical beams with nonzero orbital angular momentum or vortex beams. A generalized Rayleigh-Jeans distribution of asymptotic mode composition is obtained, b
Externí odkaz:
http://arxiv.org/abs/2112.13696
Autor:
Mangini, F., Gervaziev, M., Ferraro, M., Kharenko, D. S., Zitelli, M., Sun, Y., Couderc, V., Podivilov, E. V., Babin, S. A., Wabnitz, S.
Since its first demonstration in graded-index multimode fibers, spatial beam self-cleaning has attracted a growing research interest. It allows for the propagation of beams with a bell-shaped spatial profile, thus enabling the use of multimode fibers
Externí odkaz:
http://arxiv.org/abs/2111.08063
Experimental and numerical studies of spatiotemporal femtosecond soliton propagation over up to 1 km spans of parabolic graded-index (GRIN) fibers reveal that initial multimode soliton pulses naturally and irreversibly evolve into a singlemode solito
Externí odkaz:
http://arxiv.org/abs/2101.12599
We propose a new semi-analytical model, describing the bandwidth evolution of pulses propagating in dispersion managed (DM) transmission systems using multimodal graded-index fibers (GRIN) with parabolic index. The model also applies to monomodal fib
Externí odkaz:
http://arxiv.org/abs/2101.05393
Autor:
Leventoux, Y., Granger, G., Krupa, K., Tonello, A., Millot, G., Ferraro, M., Mangini, F., Zitelli, M., Wabnitz, S., Février, S., Couderc, V.
The characterization of the complex spatiotemporal dynamics of optical beam propagation in nonlinear multimode fibers requires the development of advanced measurement methods, capable of capturing the real-time evolution of beam images. We present a
Externí odkaz:
http://arxiv.org/abs/2010.02159
Autor:
Mangini, F., Ferraro, M., Zitelli, M., Kalashnikov, V., Niang, A., Mansuryan, T., Frezza, F., Tonello, A., Couderc, V., Aceves, A. B., Wabnitz, S.
We demonstrate a new practical approach for generating multicolour spiral-shaped beams. It makes use of a standard silica optical fibre, combined with a titled input laser beam. The resulting breaking of the fibre axial symmetry leads to the propagat
Externí odkaz:
http://arxiv.org/abs/2010.00487
We experimentally demonstrate a novel nonlinear effect in optical fibers: upconversion luminescence generation excited by multiphoton absorption of femtosecond infrared pulses. We directly estimate the average number of photons involved in the up-con
Externí odkaz:
http://arxiv.org/abs/2009.12459