Photonic RF channelizer based on a 90 wavelength optical soliton crystal 49GHz Kerr microcomb

Abstract

We report a broadband radio frequency (RF) channelizer with up to 92 channels using a coherent microcomb source. A soliton crystal microcomb, generated by a 49 GHz micro-ring resonator (MRR), is used as a multi-wavelength source. Due to its ultra-low comb spacing, up to 92 wavelengths are available in the C band, yielding a broad operation bandwidth. Another high-Q MRR is employed as a passive optical periodic filter to slice the RF spectrum with a high resolution of 121.4 MHz. We experimentally achieve an instantaneous RF operation bandwidth of 8.08 GHz and verify RF channelization up to 17.55 GHz via thermal tuning. Our approach is a significant step towards the monolithically integrated photonic RF receivers with reduced complexity, size, and unprecedented performance, which is important for wide RF applications ranging from broadband analog signal processing to digital-compatible signal detection.

arXiv comment7 pages, 4 figures, 59 references

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• Highly tunable broadband RF photonic fractional Hilbert transformer based on a Kerr soliton crystal microcomb source
• Integral order photonic RF and microwave signal processors based on soliton crystal Kerr micro-combs
• Design of silicon waveguides for Kerr nonlinear optical performance with graphene oxide films
• Photonic Microwave and RF Channelizers using Kerr Micro-combs
• Review: Graphene oxide 2D thin films for high performance nonlinear integrated photonics
• Theory for the Accuracy of Microcomb Photonic Microwave Transversal Signal Processors
• Spectral Shaping with Integrated Self-Coupled Sagnac Loop Reflectors
• Design of Photonic Filters based on Integrated Coupled Sagnac Loop Reflectors
• Photo-thermal tuning of graphene oxide coated integrated optical waveguides
• Ultra-high bandwidth fiber-optic data transmission with a single chip source
• Optical data transmission field trial @ 44Tb/s with a 49GHz Kerr soliton crystal microcomb
• Dual-polarization RF Channelizer Based on Kerr Soliton Microcomb Sources
• Graphene oxide 2D films integrated with nanowires and ring resonators for enhanced nonlinear optics
• Photonic single perceptron at Giga-OP/s speeds with Kerr microcombs for scalable optical neural networks
• Broadband photonic RF channelizer with a Kerr soliton crystal micro-comb