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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 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.
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...
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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