Working Paper Article Version 1 This version is not peer-reviewed

Photonic RF and Microwave Arbitrary Waveform Generator Based on a Soliton Crystal 49GHz Kerr Micro-comb

Version 1 : Received: 14 May 2020 / Approved: 15 May 2020 / Online: 15 May 2020 (09:57:38 CEST)

How to cite: Moss, D.; Tan, M.; Xu, X.; Boes, A.; Corcoran, B.; Wu, J.; Nguyen, T.; Chu, S.; Little, B.; Morandotti, R.; Mitchell, A. Photonic RF and Microwave Arbitrary Waveform Generator Based on a Soliton Crystal 49GHz Kerr Micro-comb. Preprints 2020, 2020050251 Moss, D.; Tan, M.; Xu, X.; Boes, A.; Corcoran, B.; Wu, J.; Nguyen, T.; Chu, S.; Little, B.; Morandotti, R.; Mitchell, A. Photonic RF and Microwave Arbitrary Waveform Generator Based on a Soliton Crystal 49GHz Kerr Micro-comb. Preprints 2020, 2020050251

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.

Subject Areas

nonlinear optics; microwave; waveform generator; microcombs

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