title: All-optical slow-light on a photonic chip.
abstract: We demonstrate optically tunable delays in a silicon-on-insulator planar waveguide based on slow light induced by stimulated Raman scattering (SRS). Inside an 8-mm-long nanoscale waveguide, we produce a group-index change of 0.15 and generate controllable delays as large as 4 ps for signal pulses as short as 3 ps. The scheme can be implemented at bandwidths exceeding 100 GHz for wavelengths spanning the entire low-loss fiber-optics communications window and thus represents an important step in the development of chip-scale photonics devices that process light with light.
authors.forename: Yoshitomo
authors.initials: Y
authors.lastname: Okawachi
authors.forename: Mark
authors.initials: M
authors.lastname: Foster
authors.forename: Jay
authors.initials: J
authors.lastname: Sharping
authors.forename: Alexander
authors.initials: A
authors.lastname: Gaeta
authors.forename: Qianfan
authors.initials: Q
authors.lastname: Xu
authors.forename: Michal
authors.initials: M
authors.lastname: Lipson