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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.
Using electro-optic modulators, we generate a 41-line 10-GHz spaced Gaussian-shaped optical comb. We use this comb to demonstrate apodized microwave photonic filters with greater than 43-dB sidelobe suppression, without the need for a pulse shaper.
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