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Narrowband microwave-photonic notch filtering using Brillouin interactions in silicon

Gertler, Shai; Otterstrom, Nils T.; Gehl, Michael; Starbuck, Andrew L.; Dallo, Christina; Pomerene, Andrew; Lentine, Anthony L.; Rakich, Peter T.

We present narrowband RF-photonic filters in an integrated silicon platform. Using Brillouin interactions, the filters yield narrowband (~MHZ) filter bandwidths with high signal rejection, and demonstrate tunability over a wide (~GHz) frequency range.