Reconstruction of idealized phase-space topology of four-wave mixing observed in nonlinear fiber

We validate a new testbed revealing the phase-space topology of ideal four-wave mixing processes. An approach based on iterated initial conditions in a short fiber is compared with experimental datasets processed by a neural network.

Langevin’s model for soliton molecules in ultrafast fi ber ring laser cavity: investigating the interplay between noise and inertia

We describe the vibration pattern of a soliton-molecule using the Langevin’s model, i.e. noise source combined with a deterministic model. This simpler model allows investigating the interplay between fl uctuation and dissipation mechanisms at play.

Accurate fiber-optic emulator of fundamental four-wave mixing theory

projet FOURIER - Fibre et optique ultra rapide pour l’investigation d’événements rares

The temporal analogue of diffractive couplers

International audience; Based on the space-time duality of light, we numerically demonstrate that temporal dispersion grating couplers can generate from a single pulse an array of replicas of equal amplitude. The phase-only profile of the temporal grating is optimized by a genetic algorithm that takes into account the optoelectronic bandwidth limitations of the setup.

Design and control of NxN microphotonics switch array based on non-adiabatic theory

The development of linear programmable nanophotonics processors requires large number of couplers to route light through the photonic chip. This number scales nonlinearly with the number of inputs and outputs [1] , making the device increasingly complex to control, and bulky. Regarding the latter aspects, densely packed array of waveguides would be an elegant solution. In order to couple selectively the different –at first isolated- waveguides, we rely on the analogy between the equations governing the unidirectional propagation in optics and the time evolution in quantum physics [2] . Namely, as seen in fig. 1-a , if each waveguide can be considered as a photonic energy level, then a trans…

Non-adiabatic control in NxN integrated photonic switch

National audience

Complete measurement of the phase-space topology of fiber four-wave mixing using iterated initial conditions

We experimentally demonstrate an optical fiber testbed enabling the quantitative study of ideal four-wave mixing. We directly measure the complex phase-space topology including features such as the separatrix, Fermi Pasta Ulam recurrence, and stationary waves.

Langevin's Model for Soliton Molecules in Ultrafast Fiber Ring Laser Cavity

Phase-space topology of fiber four-wave mixing

Reconstruction of phase-space topology in fiber four-wave mixing

We propose an experimental technique aimed to reveal a fundamental four-wave mixing process resulting in a complete reconstruction of the phase-space topology. The analysis is accompanied by training of a neural network on the experimental data.

Etude et contrôle des portraits de phase du processus idéal de mélange à quatre ondes dans les fibres optiques

L’équation de Schrödinger non linéaire régit l’évolution des ondes dans de nombreux domaines non linéaires tels que l’hydrodynamique, la physique des plasmas, les condensats de Bose-Einstein et l’optique fibrée. Dans ce dernier cas, l’onde subit des changements dans un milieu dispersif combiné à un déphasage non linéaire dépendant de l’intensité. Le processus clé sous-jacent est le mélange à quatre ondes, qui décrit l’échange d’énergie entre des composantes de fréquence discrètes. En raison de la croissance des bandes latérales additionnelles et des pertes optiques qui limitent la distance d’interaction potentielle, il est notoirement difficile d’observer expérimentalement la dynamique idéa…

Existence of nested oscillators in soliton molecules revealed by Mode Decomposition

Reduced set of descriptors for experimental analysis of nonlinear optics phenomena