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

Xingyuan Xu; Mengxi Tan; Jiayang Wu; Andreas Boes; Bill Corcoran; Thach G. Nguyen; Sai T. Chu; Brent Little; Roberto Morandotti; Arnan Mitchell; David J. Moss

Working Paper Article Version 1 This version is not peer-reviewed

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

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.

integrator; Kerr micro-comb; RF signal processing

ENGINEERING, Electrical & Electronic Engineering

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

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