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We propose and demonstrate a novel microwave photonic filter. The microwave filter can obtain responses of a bandpass filter and a notch filter simultaneously. The microwave filter is realized based on a recirculating delay line loop (RDLL) and a cascaded delay interferometer (DI). At the two different output ports of DI, a bandpass filter and a notch filter are obtained respectively.
A microwave photonic filter with passband and stopband interchanged is proposed and demonstrated. The structure is based on a recirculating delay line loop comprising a semiconductor optical amplifier (SOA) and a tunable narrowband optical filter, converted signal used as negative tap is generated employing the cross-gain modulation of the amplified spontaneous emission spectrum of the SOA. The filter...
A microwave photonic interference mitigation filter is proposed and experimentally demonstrated. The structure is based on a recirculating delay line comprising a semiconductor optical amplifier used to generate negative tap. A bandpass response with negative coefficients and a broadband allpass response are combined to achieve notch response with flat passband.
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