ABSTRACT
Due to the fact that the single passband of a microwave photonic filter based on Stimulated Brillouin Scattering (SBS) in fiber is formed by mapping the Brillouin gain spectrum, bandwidth-reconfiguration can be implemented by changing the Brillouin gain linewidth. In this paper, a bandwidth-tunable and reconfigurable microwave photonic filter is proposed and experimentally demonstrated Brillouin gain spectrum narrowing and broadening by using an optical frequency comb. Experiments have shown that the 3 dB and 20 dB bandwidth of the filter are 202 MHz and 314 MHz, respectively and its 20-dB shape factor is 1.56. The passband ripple is ~2.5 dBm with a stop-band rejection of 30 dBm under 15 dBm optical pump power.
