Journal
OPTICS EXPRESS
Volume 20, Issue 17, Pages 18836-18845Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.018836
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Funding
- Australian Research Council (ARC) [DP1096838, FF0776056]
- Australian Research Council (ARC) through Center of Excellence CUDOS [CE110001018]
- U.S. Department of Defense through AFOSR/AOARD [FA23861114030]
- Australian Research Council [DP1096838, FF0776056] Funding Source: Australian Research Council
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We report the first demonstration of a photonic chip based dynamically reconfigurable, widely tunable, narrow pass-band, high Q microwave photonic filter (MPF). We exploit stimulated Brillouin scattering (SBS) in a 6.5 cm long chalcogenide (As2S3) photonic chip to demonstrate a MPF that exhibited a high quality factor of similar to 520 and narrow bandwidth and was dynamically reconfigurable and widely tunable. It maintained a stable 3 dB bandwidth of 23 +/- 2MHz and amplitude of 20 +/- 2 dB over a large frequency tuning range of 2-12 GHz. By tailoring the pump spectrum, we reconfigured the 3 dB bandwidth of the MPF from similar to 20 MHz to similar to 40 MHz and tuned the shape factor from 3.5 to 2 resulting in a nearly flat-topped filter profile. This demonstration represents a significant advance in integrated microwave photonics with potential applications in on-chip microwave signal processing for RADAR and analogue communications. (C) 2012 Optical Society of America
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