Abstract
The usual three-wave description of stimulated Brillouin scattering (SBS) in birefringent fibers is revised by considering that the pump beam is not necessarily linearly polarized parallel to one of the main axes. The equations obtained govern the dynamics of SBS in a polarization maintaining fiber whatever the state of polarization of the light. A model describing the polarization dynamics of a Brillouin fiber ring laser is then obtained by completing these equations by appropriate boundary conditions. For various orientations of the fiber axes and various polarizations of the incident pump beam, the behaviors of a short-length Brillouin laser are finally studied by numerical simulations that are systematically compared to experimental results.
Published Version
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