All-optical slow-light on a photonic chip

Yoshitomo Okawachi, Mark Foster, Jay Sharping, Alexander Gaeta, Qianfan Xu, Michal Lipson
2006 Optics Express  
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 lowloss fiber-optics communications window and thus represents an important step in
more » ... important step in the development of chip-scale photonics devices that process light with light.
doi:10.1364/oe.14.002317 pmid:19503569 fatcat:ehvcv4kqerhebngv2xopzwreqi