Observation of pulse delaying and advancement in optical fibers using stimulated Brillouin scattering Song, Kwang Yong ; Herr�ez, Miguel Gonz�lez ; Th�venaz, Luc Abstract Publication: Optics Express Pub Date: January 2005 DOI: 10.1364/OPEX.13.000082 Bibcode: 2005OExpr..13...82S