MONTES , Carlos

While usually negligible in standard optical fibers, the group velocity dispersion of acoustic waves may in some cases play a significant role in the dynamics of stimulated Brillouin scattering (SBS) in propagation medias with more complex structures, such as microstructured fibers. The usual 3-wave coherent model of SBS can be adapted to take...

We consider a counter-intuitive regime of stimulated Brillouin scattering in which the pump wave absorbs the phase defects of the Stokes wave, yielding a nonlinear self-stabilisation of the acoustic wave and a narrowing of the acoustic spectrum

National audience

Self-similar deformation of three-wave stimulated Brillouin scattering (SBS) dissipative structures ("Brillouin quasi-solitons") yields superluminous behaviors. The authors discuss the relevancy of the various velocities involved in the nonlinear propagation of such complex structures, both in the ideal semi-infinite case and in a real-world...

We present a new stationary solution of the coherent 3-wave model of SBS, when a strong acoustic dispersion in taken into account. This high-reflectivity Brillouin mirror is characterized by an inverted repartition of the acoustic intensity, which increases in the direction of the pump wave. The 1D coherent 3-wave model of stimulated Brillouin...

La prise en compte de la dispersion de vitesse de groupe acoustique permet d'envisager des amplificateurs Brillouin à bande large dans les fibres optiques microstructurées

Les guides d'ondes silicium nanostructurés permettent aujourd'hui un contrôle extrêmement fin des relations de dispersion acoustique aussi bien qu'optique. En configuration suspendue, de telles cavités optomécaniques présentent en outre l' avantage de très faibles pertes acoustiques. Nous explorons théoriquement et numériquement la dynamique...

Stimulated Brillouin backscattering in a cw-pumped long optical polarization-maintaining fiber ring cavity excites spontaneous stable mode-locking. But the shortest pulses allowed by the Brillouin gain bandwidth imply an active mode-locking, which we have achieved by using a phase modulator inside the ring. The experiment is carried out in the...

Stimulated Brillouin scattering (SBS) of a cw-pump in a long optical fiber ring cavity generates for a given gain G, below a critical feedback Rcrit, a backward soliton Stokes pulse at the roundtrip repetition rate, through resonant three- wave interaction between the optical pump wave and backward Stokes wave, and a high frequency (GHz) axial...

Stimulated Brillouin scattering (SBS) of visible light in a small-core photonic crystal fiber (PCF) resonator of small external Q-factor, experimentally presents trains of subluminous and superluminous pulses presenting all the characteristics of dissipatif Brillouin solitons. Insertion of the acoustic dispersion, which may be significant in...

The mirrorless backward optical parametric oscillator (BOPO), where the signal and idler waves are propagating in opposite directions, will establish a distributed feedback mechanism and thus optical parametric oscillation without the need to apply mirrors or external feedback to the cavity. It has been recently demonstrated experimentally by...

In optical parametric oscillators based on periodically poled (PP) non-linear quadratic materials, choosing a submicronic poling period allows generating the phase-matched signal and idler waves in opposite directions. In this case a distributed feedback mechanism is established, which enables optical parametric oscillation without the need of...