Working Paper Article Version 1 This version is not peer-reviewed

Radio Frequency (RF) Photonic Integrator Based on a Kerr Microcomb

Version 1 : Received: 11 March 2020 / Approved: 12 March 2020 / Online: 12 March 2020 (04:05:22 CET)

How to cite: Xu, X.; Tan, M.; Wu, J.; Boes, A.; Corcoran, B.; Nguyen, T.G.; Chu, S.T.; Little, B.; Morandotti, R.; Mitchell, A.; Moss, D.J. Radio Frequency (RF) Photonic Integrator Based on a Kerr Microcomb. Preprints 2020, 2020030195 Xu, X.; Tan, M.; Wu, J.; Boes, A.; Corcoran, B.; Nguyen, T.G.; Chu, S.T.; Little, B.; Morandotti, R.; Mitchell, A.; Moss, D.J. Radio Frequency (RF) Photonic Integrator Based on a Kerr Microcomb. Preprints 2020, 2020030195

Abstract

We demonstrate a photonic RF integrator based on an integrated soliton crystal micro-comb source. By multicasting and progressively delaying the input RF signal using a transversal structure, the input RF signal is integrated discretely. Up to 81 wavelengths are provided by the microcomb source, which enable a large integration time window of ~6.8 ns, together with a time resolution as fast as ~84 ps. We perform signal integration of a diverse range of input RF signals including Gaussian pulses with varying time widths, dual pulses with varying time intervals and a square waveform. The experimental results show good agreement with theory. These results verify our microcomb-based integrator as a competitive approach for RF signal integration with high performance and potentially lower cost and footprint.

Subject Areas

integrator; Kerr micro-comb; RF signal processing

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