Pedro Tovar, Luis E. Ynoquio H, J. P. Weid, Vladimir B. RJabulkaibeiro, R. Ribeiro
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Time-Resolved spectroscopy for laser chirp characterization and self-heterodyne generation of apodized-NLFM microwave pulses
This paper reports the photonic generation of apodized non-linear frequency modulation (NLFM) microwave pulses by using a self-heterodyne scheme. Time-resolved optical spectroscopy was developed for the characterization of the laser diode chirp. By using a step-shaped current stimulus the laser chirp transfer function H(s) was obtained.With knowledge of H(s), a numerical model produced the suitable current stimulus i(t) needed to generate apodized-shaped radio frequency chirped pulses through self-heterodyning. Experiment results agreed with the numerical simulations.
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