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All-Optical Slow Light on Photonic Chip |
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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. |
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Observation of slow light via SRS in a Silicon-on-insulator (SIO) waveguide. Amplitude of the Fourier transformed interferograms with no pump pulse and with a pump pulse for which the total delay is 4 ps.
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Y. Okawachi, M. A. Foster, J. E. Sharping, A. L. Gaeta, Q. Xu, and M. Lipson,
"All-optical slow-light on a photonics chip," Opt. Express 14, 2317-2322 (2006). PDF
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| 159 Clark Hall |
| Cornell University |
| Ithaca, NY 14853 |
| (607) 255-0657 Lab |
| a.gaeta@cornell.edu |
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