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We report the experimental observation of polarization domain-walls in conventional optical fibers. Moreover, we exploit their topological properties for data transmission beyond the Kerr limits imposed in normally dispersive fibers.
We demonstrate that the nonlinear interaction in an optical fiber between an incident beam and its backward delayed replica leads to a chaotic dynamics of its output polarization state enabling a powerful scrambling process.
We report a theoretical model for the study of second harmonic generation in cylindrical structures of finite height. By changing the structure of the pump beam we demonstrate switching from magnetic to electric dipole radiation in the generated second harmonic frequency.
We report theoretical and experimental results on second harmonic generation from individual pillars and dimers monolithic AlGaAs-on-AlOx nanoantennas. We demonstrate peak conversion efficiencies exceeding 10−5 for a 1.6 GW/cm2 pump intensity.
In the early 1950s, Fermi, Pasta and Ulam (FPU) published a seminal report in which they numerically investigated the dynamics of a one-dimensional anharmonic chains of particles [1]. They argued that, owing to the nonlinear coupling, the system would irreversibly relax to a state of thermal equilibrium, in which the energy is equidistributed among all modes. Instead of such a thermalization process,...
Optical domain walls (DW) correspond to a localized structure of the kink type that connects two regions of space with different polarizations [1]. In such a symbiotic system, the fast polarization knots lead to two anticorrelated coupled twin-waves for which the strong binding force imposed by cross-phase modulation (XPM) can compensate for the classical defocusing regime. In this contribution, we...
We experimentally investigate the design of a high-repetition rate source delivering well-separated optical pulses due to the nonlinear compression of a dual-frequency beat signal within a cavity-less normally dispersive fiber-based setup.
We report a novel method for sampling and amplifying a nanoseconds signal based on the combined effects of normal chromatic dispersion and cross-phase modulation induced by high repetition rate sinusoidal and orthogonally polarized pump wave.
In this paper, we report the observation and exploitation of the capability of light to self-organize its state-of-polarization, upon propagation in optical fibers, by means of a device called Omnipolarizer. The principle of operation of this system consists in a counter-propagating four-wave mixing interaction between an incident signal and its backward replica generated at the fiber output thanks...
We report the generation and propagation of polarization domain walls in a standard Telecom optical fiber in the normal dispersion regime. These vectorial structures are then implemented in order to transmit optical data at 1550 nm at a 10 GBits/s and 40 GBits/s bit-rate.
We describe a phenomenon of self-organization of the light state-of-polarization in optical fibers based on a nonlinear cross-polarization interaction between an incident signal and its backward replica. Several proof-of-principles for telecom applications are reported.
We report the experimental observation of self-polarization of light in optical fibers through a counter-propagating four-wave mixing between an incident signal and its backward replica. An efficient self-polarization of a 40-Gbit/s signal is demonstrated.
We report a polarization scrambler based on the nonlinear interaction in optical fibers between a forward beam and its backward replica amplified by a reflective-loop. The output polarization exhibits a fast chaotic dynamics and was tested on a 10-Gbit/s signal.
A polarization bistability and hysteresis cycle phenomenon is demonstrated in optical fibers thanks to a counter-propagating four-wave mixing interaction. Based on this process, we successfully report the proof-of-principle of an optical flip-flop memory and a 10-Gbit/s routing operation.
We analyze two all-optical fiber-based fast polarization scramblers. In the first, a signal beam nonlinearly interacts with a co-propagating incoherent pump, whose fast temporal fluctuations induce an effective depolarization of the signal. In the second, the signal interacts with its backward replica generated and amplified by a reflective loop. Beyond an amplification threshold, the signal output...
Due to a growing demand of security in transmission systems, recent research have been focus on the ability to manipulate a light beam in such a way to hide, namely to cloak, an event over a finite time or localization in space. The main idea is to create a hole or a gap in the spatial or time domain so as to allow for an object or a data to be kept hidden for a while and then to be restored [1-2]...
The all-optical control of light polarization is nowadays a fundamental issue which finds important applications in optical networks. In this field, the research has moved on the development of nonlinear methods of re-polarization of a partially coherent and initially depolarized light [1]. The main drawback of most of these devices is that they suffer from a large amount of output Relative-Intensity-Noise...
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