Photonic chip based tunable and reconfigurable narrowband microwave photonic filter using stimulated Brillouin scattering

Byrnes, AdamPant, RaviLi, EnbangPoulton, Christopher GFan, ShanhuiMadden, SteveLuther-Davies, BarryEggleton, Benjamin JChoi, Duk-Yong2013-12-122013-12-121094-4087http://hdl.handle.net/1885/11087We 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 ~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 ~20 MHz 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.18845-18854http://www.sherpa.ac.uk/romeo/issn/1094-4087/ Author can archive pre-print (ie pre-refereeing); author can archive post-print (ie final draft post-refereeing);author can archive publisher's version/PDF; on a non-profit server;on author's own website of arXiv; publisher's version/PDF may be used; publisher copyright and source must be acknowledged with set statement (see policy);set statement to accompany deposit: This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-17-18836. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.photonic chipstimulated Brillouin scatteringmicrowave photonic filteranalogue communicationsRADARPhotonic chip based tunable and reconfigurable narrowband microwave photonic filter using stimulated Brillouin scattering2012-08-0110.1364/OE.20.0188362015-12-10