Abstract

Stimulated Brillouin scattering (SBS) of a cw-pump E_p in an optical fiber is able to generate a counterpropagating Stokes pulse E_B by resonant interaction with high frequency (GHz) axial acoustic waves E_a. We have dynamically described and experimentally obtained the generation of stable trains of dissipative Brillouin solitons in fiber ring lasers below a critical feedback [1], when the cavities contain a large number of longitudinal modes N beneath the Brillouin gain curve. Stable self-pulsed regimes of nanosecond Brillouin solitons are obtained in a finite range of fiber length [namely $10<L(m)/{\lambda }_p^2(\mu m)<400$], their Fourier transform spectra showing only a few number of cavity modes coupled together.

© 2000 IEEE