Abstract
In this paper, a much compact structure of configurable optical pulse synthesizer is proposed based on the signal processing theory. The desired optical pulse waveform is described by coherently overlapping the initial input pulse and its first-order, second-order differential signals, which are obtained by microring resonator (MR) working on the critical coupling condition. By optimizing the relative amplitudes and phases, output optical pulse can be tuned dynamically and several typical waveforms (e.g. flat-top, asymmetric triangular) are achieved. In addition, our results demonstrate that the proposed synthesizer can be applied for a variety of input sources (e.g. Gaussian or Sech-shape input pulses) with a certain range of temporal duration (FWHM = 5ps–20ps).
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