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Photonic generation of phase-coded microwave signals based on optical pulse shaping and time delay

Xiang P, Zheng X, Zhang H, Li Y, Wang R

Optica Applicata

2012

Vol. 42, nr 4

835--843

A novel approach to photonic generation of phase-coded microwave signals based on optical pulse shaping and time delay is proposed. In the proposed approach, an optical short pulse train is inserted with a specified amount of time-delay to certain pulses, and then converted into super-Gaussian microwave pulses based on the optical pulse shaping technique. By properly adjusting the time-delay, phased-coded microwave signals with a desired code pattern can be generated. A model to describe the signal generation is developed, and the generations of phase-coded microwave signals with frequencies up to 50 GHz are demonstrated.