Photonic-chip-based tunable slow and fast light via stimulated Brillouin scattering
- Publication Type:
- Journal Article
- Citation:
- Optics Letters, 2012, 37 (5), pp. 969 - 971
- Issue Date:
- 2012-03-01
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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 (As 2S3) 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. © 2012 Optical Society of America.
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