Abstract
We report a photonic-based radio frequency (RF) arbitrary waveform generator (AWG) using a soliton crystal micro-comb source with a free spectral range (FSR) of 48.9 GHz. The comb source provides over 80 wavelengths, or channels, that we use to successfully achieve arbitrary waveform shapes including square waveforms with a tunable duty ratio ranging from 10% to 90%, sawtooth waveforms with a tunable slope ratio of 0.2 to 1, and a symmetric concave quadratic chirp waveform with an instantaneous frequency of sub GHz. We achieve good agreement between theory and experiment, validating the effectiveness of this approach towards realizing high-performance, broad bandwidth, nearly user-defined RF waveform generation.
Original language | English |
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Pages (from-to) | 6221-6226 |
Number of pages | 6 |
Journal | Journal of Lightwave Technology |
Volume | 38 |
Issue number | 22 |
DOIs | |
Publication status | Published - 15 Nov 2020 |
Keywords
- micro-ring resonators
- Microwave photonics