Photonic chip based tunable slow and fast light via stimulated Brillouin scattering

Authors

Ravi Pant, University of Sydney
Adam Byrnes, University of Sydney
Christopher Poulton, University of Technology Sydney
Enbang Li, University of WollongongFollow
Duk-Yong Choi, Australian National University
Stephen J. Madden, Australian National University
Barry Luther-Davies, Australian National University
Benjamin J. Eggleton, University of Sydney

RIS ID

93373

Publication Details

Pant, R., Byrnes, A., Poulton, C., Li, E., Choi, D., Madden, S. J., Luther-Davies, B. & Eggleton, B. J. (2012). Photonic chip based tunable slow and fast light via stimulated Brillouin scattering. Optics Letters, 37 (5), 969-971.

Abstract

We 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.