Observation of dissipative superluminous solitons in a Brillouin fiber ring laser

CW-pumped polarization-maintaining Brillouin fiber ring laser: I. Self-structuration of Brillouin solitons

“…The three-wave coherent model we have introduced several years ago for the description of stimulated Brillouin scattering (SBS) in single-mode optical fiber resonators [1], derived from the model developed for fluids [2] [3], has been the tool for finding Brillouin soliton self-structuration [4] - [6], and has been now largely adopted by the scientific community [7], because it gives simple explanations of features such that the finite Brillouin gain bandwidth [8], generation of Stokes pulses called dissipative Brillouin solitons [4] in the fiber ring cavity, the bifurcation between the stationary Brillouin mirror and the pulsed dynamics in the cw-pumped fiber cavity leading to stable soliton pulses [5], and quantitative agreement with the experiments in the whole self-pulsing domain [6], which are elsewhere impossible to describe through the older incoherent model of intensity equations [9]. The two governing ideas of this coherent model are that (1.)…”

Transparent anomalous dispersion and superluminal light-pulse propagation at a negative group velocity

“…More recently, it has been considered [7][8][9][10][11][13][14][15][16][17][18][19][21][22][23][24]] to use various schemes including the anomalous dispersion near an absorption line [8][9][10][11], nonlinear [13] and linear gain lines [14][15][16][17][18][19][22][23][24], active plasma medium [17,21], or in a tunneling barrier [25,26] to observe these effects. Sometimes it is applied [9][10][11]25,26] to observe superluminal propagation of light pulses.…”

Appearance of an ensemble solitary pulse train in transient backward stimulated Raman scattering

“…It is known that the self-similar solution in transient backward interactions have been theoretically predicted in Brillouin scattering [15,21] and plasma [10]. In this report, we will increment for transient BSRS.…”

“…Another one is determined by the balance between energy exchange rates of dispersionless waves of different velocities in threewave resonant interaction [6,7]. This structure is ubiquitous in various branches of science as plasma solitons [8][9][10], optical parametric solitons [11][12][13], stimulated backward Brillouin scattering [14,15], solitons in forward stimulated Raman scattering (FSRS) [16][17][18]. Soliton in backward stimulated Raman scattering (BSRS) was theoretically predicted in 1969 [19] and observed recently in gas filled hollow-core photonic bandgap fibres (HC-PBG) [20].…”