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您的检索式：作者名="Alessandro Tonello"
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| 1 | Secret key exchange in ultralong lasers by radiofrequency spectrum coding显示文摘We propose a new approach to the generation of an alphabet for secret key exchange relying on small variations in the cavity length of an ultralong fiber laser.This new concept is supported by experimental results showing how the radiofrequency spectrum of the laser can be exploited as a carrier to exchange information.The test bench for our proof of principle is a 50-km-long fiber laser linking two users,Alice and Bob,where each user can randomly add an extra 1-km-long segment of fiber.The choice of laser length is driven by two independent random binary values,which makes such length become itself a random variable.The security of key exchange is ensured whenever the two independent random choices lead to the same laser length and,hence,to the same free spectral range. | Alessandro Tonello Alain Barthelemy Katarzyna Krupa Vincent Kermene Agnes Desfarges-Berthelemot Badr Mohamed Shalaby Sonia Boscolo Sergei K Turitsyn Juan Diego Ania-Castanon | 2015 | Light(Science & Applications)2015，4，1： | 1 |
| 2 | Non- linear pulse reshaping with highly birefringent photonic crystal fiber for OCDMA receivers显示文摘 | Ihsan Fsaifes Steevy Cordette Alessandro Tonello | 2010 | Photonic Technol- ogy Letters IEEE2010，22，18： | 1 |
| 3 | Femtosecond nonlinear losses in multimode optical fibers显示文摘Multimode optical fibers are attracting a growing interest for their capability to transport high-power laser beams,coupled with novel nonlinear optics-based applications.However,optical fiber breakdown occurs when beam intensities exceed a certain critical value.Optical breakdown associated with irreversible modifications of the refractive index,triggered by multiphoton absorption,has been largely exploited for fiber material microstructuration.Here we show that,for light beam intensities slightly below the breakdown threshold,nonlinear absorption strongly affects the dynamics of a propagating beam as well.We experimentally analyze this subthreshold regime and highlight the key role played by spatial self-imaging in graded-index fibers for enhancing nonlinear optical losses.We characterize the nonlinear power transmission properties of multimode fibers for femtosecond pulses propagating in the near-infrared spectral range.We show that an effective N-photon absorption analytical model is able to describe the experimental data well. | MARIO FERRARO FABIO MANGINI MARIO ZITELLI ALESSANDRO TONELLO ANTONIO DE LUCA VINCENT COUDERC STEFAN WABNITZ | 2021 | Photonics Research2021，9，12： | 0 |
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