title: Theoretical evaluation of the Brillouin threshold and the steady-state Brillouin equations in standard single-mode optical fibers.
abstract: We first use the nonlocalized, fluctuating source model for the stimulated Brillouin scattering to get the exact spectrum of the Stokes wave in optical fibers with attenuation loss. A new relation for the evaluation of the critical pump power (or Brillouin threshold) depending on the fiber length is then introduced, which should be more precise than the well-known Smith formula. Furthermore, we give for the first time, to the best of our knowledge, an approximate solution for standard steady-state Brillouin equations, which consists of two simple relations.
authors.affiliation: Institut Supérieur d'Electronique de Bretagne, 20 rue Cuirassé Bretagne, 29604 Brest Cedex, France.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Le Floch
authors.forename: Pierre
authors.initials: P
authors.lastname: Cambon