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We discuss research at Purdue University in which ultrafast optical signal processing approaches are adapted for generation, processing, and compression of ultrabroadband RF electrical signals.
We demonstrate picosecond optical pulse generation based on a directly generated 10 GHz Gaussian-shaped optical frequency comb using only intensity and phase modulators. The quadratic comb phase allows for pulse compensation with only single-mode fibers.
We present flat-top microwave photonic filters through amplitude and phase shaping of optical frequency combs. Flat-topped filters with greater than 27-dB stopband loss are demonstrated using 32 taps with both positive and negative tap coefficients.
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