González-Herráez, MiguelSong, Kwang-YongThévenaz, Luc2015-03-042015-03-042015-03-04200510.1364/LS.2005.LWB2https://infoscience.epfl.ch/handle/20.500.14299/112114We demonstrate experimentally that negative group velocities of light can be achieved in conventional optical fibers by use of the stimulated Brillouin scattering effect. Velocities as slow as 71000 km/s can also be achieved.text::conference output::conference proceedings::conference paper