title: Zero-gain slow & fast light propagation in an optical fiber.
abstract: Slow & fast light with null amplification or loss of a light signal is experimentally demonstrated. This novel method for producing zero-gain slow & fast light takes advantage of the great flexibility of stimulated Brillouin scattering in optical fibers to generate synthesized gain spectra. Generation of optical delays and advancements with minor amplitude change is realized through the superposition of gain and loss profiles showing very different spectral widths, resulting in a synthesized spectral profile identical to an ideal electromagnetically-induced transparency.
authors.forename: Sanghoon
authors.initials: S
authors.lastname: Chin
authors.forename: Miguel
authors.initials: M
authors.lastname: Gonzalez-Herraez
authors.forename: Luc
authors.initials: L
authors.lastname: Thévenaz