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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...
We demonstrate a simple configuration for clock recovery from a nonreturn-to-zero signal, which is preprocessed by a narrowband filter. Evidently, the clock component is enhanced after the filter. Compared with previous preprocessing schemes, the single filter is simple and suitable for different bit rates. The output performances related to the bandwidth and the detuning of the filter are analyzed...
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