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Optical architectures for programmable filtering of microwave signals

We present new optoelectronic architectures, based on parallel delay lines, performing programmable filtering of microwave signals. According to current performances of optoelectronic components, they can process optically carried microwave signals over frequency bandwidths as large as 20 GHz, with a time-frequency product up to 103. The operating principle of these structures is detailed and followed by the preliminary experimental demonstration at 1.3 GHz of a 53 dB rejection filter.