Pant, RaviByrnes, AdamPoulton, Christopher GLi, EnbangMadden, SteveLuther-Davies, BarryEggleton, Benjamin JChoi, Duk-Yong2014-03-182014-03-18April 16-197808194911760146-9592http://hdl.handle.net/1885/11463We report the first (to our knowledge) demonstration of photonic chip based tunable slow and fast light via stimulated Brillouin scattering. Slow, fast, and negative group velocities were observed in a 7 cm long chalcogenide (As2S3) rib waveguide with a group index change ranging from ∼−44 to +130, which results in a maximum delay of ∼23  ns at a relatively low gain of ∼23  dB. Demonstration of large tunable delays in a chip scale device opens up applications such as frequency sensing and true-time delay for a phased array antenna, where integration and delays ∼10  ns are highly desirable.3 pagesPermission to deposit received from publisher via email 24/1/14.photonic-chip-basedtunableslowfastlightstimulatedBrillouinscattering2012-03-0110.1364/OL.37.0009692015-12-11